as specific as necessary. Im waiting for my US passport (am a dual citizen. Why is Bb8 better than Bc7 in this position? SyntaxError is thrown. Alternatively if you are compiling with babel you can simply use: // the closest ancestor with the id of "div-02", // the closest ancestor which is a div in a div, // the closest ancestor which is a div and has a parent article, // the closest ancestor which is not a div. By clicking Accept all cookies, you agree Stack Exchange can store cookies on your device and disclose information in accordance with our Cookie Policy. What is this object inside my bathtub drain that is causing a blockage? this method may return false positives when searching for a class name that partially matches - e.g. Check if class exists somewhere in parent, Building a safer community: Announcing our new Code of Conduct, Balancing a PhD program with a startup career (Ep. Awesome, but how do I use that in combination with the switch statement so that I can change the output based on which classes the div contains? I did a quick benchmark performance test to check that. Site design / logo 2023 Stack Exchange Inc; user contributions licensed under CC BY-SA. You can convert the returned value into boolean, Demonstration (open the console to see true). you could just use /^class_name_you_are_searching_for$/.test(myElement.className), I wrote that too fast. 576), AI/ML Tool examples part 3 - Title-Drafting Assistant, We are graduating the updated button styling for vote arrows. We used the getElementById method to select the parent element. Two attempts of an if with an "and" are failing: if [ ] -a [ ] , if [[ && ]] Why? *Suppose you have the following element: To check if the element contains the secondary class, you use the following code: The following returns false because the element doesnt have the class error: I think that perfect solution will be this. In the examples below it should return true if the element in question resides somewhere in the childs of an element with "the-class" as the class name. Visit Mozilla Corporations not-for-profit parent, the Mozilla Foundation.Portions of this content are 19982023 by individual mozilla.org contributors. Connect and share knowledge within a single location that is structured and easy to search. Find centralized, trusted content and collaborate around the technologies you use most. If there are no such element, null. Refer to the Official Docs here. Semantics of the `:` (colon) function in Bash when used in a pipe? Of course this is only a lookup for 1 simple element (/Image/g) but you can put all in an array like

is /LI/g,

= /UL/g etc. Can the logo of TSR help identifying the production time of old Products? If the element is found, the if block runs, otherwise, the else block runs. To have different behaviour according to the class, you may use function references, or functions, within a map: If the element only has one class name you can quickly check it by getting the class attribute. statement. Seems like the perf are less good, @Ced - well, perf is irrelevant if you're not testing thousands of elements for their class, (it will probably be refactored in browsers in the future). My example for Vanilla JS, it's use a vanilla equivalent of parents() from jQuery, My solution: (it goes up to html element). Example: 'end' can be found in the class name 'frontend'. Find centralized, trusted content and collaborate around the technologies you use most. Is it possible to type a single quote/paren/etc. Making statements based on opinion; back them up with references or personal experience. Because ID must be unique on document context, you could just use instead: If you want to include element itself, you can use: Thanks for contributing an answer to Stack Overflow! I've created a prototype method which uses classList, if possible, else resorts to indexOf: Here's a case-insensitive trivial solution: Felix's trick of adding spaces to flank the className and the string you're searching for is the right approach to determining whether the elements has the class or not. How can an accidental cat scratch break skin but not damage clothes? The parentHasClass variable stores a boolean value: To check if the direct parent of the element has a specific class: The How could a person make a concoction smooth enough to drink and inject without access to a blender? Having no break after fnsi allows the code to be executed whenever there is a match - so that if the element has, f.i., class1 and class2, both fn1 and fn2 will be executed. If a parent with the specified class exists, the method returns the element. You should use, @RegularJo I run your test, but it results to me that regex is the fastest, @RegularJo also the "c" in your regex is wrong, the correct regex is '(? Citing my unpublished master's thesis in the article that builds on top of it. This question is pretty solidly answered by element.classList.contains(), but people got pretty extravagant with their answers and made some bold claims, so I ran a benchmark. tag. By clicking Post Your Answer, you agree to our terms of service and acknowledge that you have read and understand our privacy policy and code of conduct. Noise cancels but variance sums - contradiction? Semantics of the `:` (colon) function in Bash when used in a pipe? Lilypond (v2.24) macro delivers unexpected results. Can I trust my bikes frame after I was hit by a car if there's no visible cracking? condition to check whether any element has a specific class, Movie in which a group of friends are driven to an abandoned warehouse full of vampires. Fails to account for nested instances of a class name. See this Codepen link for faster and easy way of checking an element if it has a specific class using vanilla JavaScript~! Can you identify this fighter from the silhouette? I would Poly fill the classList functionality and use the new syntax. Which comes first: CI/CD or microservices? My father is ill and booked a flight to see him - can I travel on my other passport? condition to check whether any element has a specific class. Check if class exists somewhere in parent, Check if an element is a child of a parent. The closest() method of the Element interface traverses the element and its parents (heading toward the document root) until it finds a node that matches the specified CSS selector. wow so much code for something simple. Also, since you can't use jQuery, passing selectors like .drop around won't do anything but cause syntax errors. Syntax closest(selectors) Parameters selectors A string of valid CSS selector to match the Element and its ancestors against. Does anyone know how? Is it OK to pray any five decades of the Rosary or do they have to be in the specific set of mysteries? Unless you rely extensively on this for a specific operation, you won't see a performance difference. By clicking Accept all cookies, you agree Stack Exchange can store cookies on your device and disclose information in accordance with our Cookie Policy. This is really clever.. just needs a fix because. This page was last modified on Apr 7, 2023 by MDN contributors. The code sample checks if an element has a direct child with a given class. Find centralized, trusted content and collaborate around the technologies you use most. 1 indexOf for arrays is not supported by IE (ofcourse). Making statements based on opinion; back them up with references or personal experience. Not the answer you're looking for? rather than "Gaudeamus igitur, *dum iuvenes* sumus!"? class. To attain moksha, must you be born as a Hindu? child.closest ('.parent'). How can I check a parent element for css styles? How to make use of a 3 band DEM for analysis? Thanks for contributing an answer to Stack Overflow! Should I trust my own thoughts when studying philosophy? We used the optional chaining (?.) Content available under a Creative Commons license. Extending IC sheaves across smooth divisors with normal crossings. The closest ancestor Element or itself, which matches the selectors. I know there a lot of answers but most of these are for additional functions and additional classes. We used the It avoids the issue of the class name partially matching another class and doesn't require polyfills to work in IE. Check if an element contains a class in JavaScript? rather than "Gaudeamus igitur, *dum iuvenes* sumus!"? We got the child element by its id and called the Here are my findings: ClassName.indexOf vs ClassList.contains. Is Spider-Man the only Marvel character that has been represented as multiple non-human characters? Living room light switches do not work during warm/hot weather. Since he wants to use switch(), I'm surprised no one has put this forth yet: Here is a little snippet If youre trying to check wether element contains a class, without using jQuery. Content available under a Creative Commons license. I just tweaked a little bit that function since if the class specified in the parameter, is not present in the whole DOM, it fails when the recursion reaches the document object because is true that we control if the element has the parent node (in the last line, and when the document is the element the parent node is null) but before we execute the previous line, and when the element is the document, document.className is undefined and it fails, so the control must be moved to the top. Is there a reason why you'd want to use classlist instead of index of e.className? Use brackets, Be careful with the word boundary. To learn more, see our tips on writing great answers. The closest () method of the Element interface traverses the element and its parents (heading toward the document root) until it finds a node that matches the specified CSS selector. What is the procedure to develop a new force field for molecular simulation? One very nice solution is to use the classList Method contains. The code sample checks if an element has a child with a given class in a single The class is found in the "className" property. What is the difference between the different methods of putting JavaScript code in an ? This is the more modern answer. This is a great method. in which element is currently the class '.bar' ? selector. Site design / logo 2023 Stack Exchange Inc; user contributions licensed under CC BY-SA. Asking for help, clarification, or responding to other answers. when you have Vim mapped to always print two? jQuery uses a similar (if not the same) method. Check if class exists somewhere in parent Ask Question Asked 10 years ago Modified 1 year, 6 months ago Viewed 73k times 64 I want to check if a class exsits somewhere in one of the parent elements of an element. It has a contains () method that is useful for your purpose: document.onclick=function (e) { console.log ( e.parentElement.classList.contains ( 'drop' ) ); } If you are targeting Internet Explorer, (IE<10), you can manually parse the list of classes and look for 'drop' in them: and this just adds to my stack. I created these functions for my website, I use only vanilla javascript, maybe it will help someone. The example above selects a div element that has the body element as its To subscribe to this RSS feed, copy and paste this URL into your RSS reader. Check parents elements contain a specific CSS class by only using javascript? Browse other questions tagged, Where developers & technologists share private knowledge with coworkers, Reach developers & technologists worldwide, Using jquery this would be with closest('.theclass').length. You may simulate the default case by having a status variable telling whether a match was found in the loop or not. "Using plain JavaScript (not jQuery)" 2. Connect and share knowledge within a single location that is structured and easy to search. (If it doesn't, then querySelector returns null). If an invalid selector string is provided to the closest() method, a How can I shave a sheet of plywood into a wedge shim? In our if statement, we To learn more, see our tips on writing great answers. I ran some tests with basically every way to do this. I believe if( $('#the-element').parents('.the-class').length ) to be more efficient, but perhaps not as human-readable; which, with querySelector in the picture, could be replaced with the following method: Try the closest() function - For each element in the set, get the first element that matches the selector by testing the element itself and traversing up through its ancestors in the DOM tree. rev2023.6.2.43474. This is a bit off, but if you have an event that triggers switch, you can do without classes: .replace(/[0-9]/g, '') removes digits from id. What are good reasons to create a city/nation in which a government wouldn't let you leave, Movie in which a group of friends are driven to an abandoned warehouse full of vampires. Javascript detect if child of parent element has a class set, https://developer.mozilla.org/de/docs/Web/API/Element/classList, Building a safer community: Announcing our new Code of Conduct, Balancing a PhD program with a startup career (Ep. What is the best way to check if element has a class? Check parents elements contain a specific CSS class by only using javascript? This page was last modified on Apr 7, 2023 by MDN contributors. You can also assign this function to element prototype. I think it would be something like this with jQuery: You can use the closest() method of Element that traverses parents (heading toward the document root) of the Element until it finds a node that matches the provided selectorString. Try grabbing the srcElement, then it's parent's className. How to make use of a 3 band DEM for analysis? Node.parentElement The below code searches for any element with a class inside a parent using querySelectorAll(): There are multiple ways to achieve this. Using plain JavaScript (not jQuery), Is there any way to check if an element contains a class? We prefixed the name of the class with a period . I only suggest running a .hasOwnProperty() check. The second. BCD tables only load in the browser with JavaScript enabled. specific id. It was a typo. // Check if the DIRECT parent element has class `parent-1`. Would a revenue share voucher be a "security"? Alternatively, if you work with older browsers and don't want to use polyfills to fix them, using indexOf is correct, but you have to tweak it a little: Otherwise you will also get true if the class you are looking for is part of another class name. onClick to get the ID of the clicked button, Find the closest ancestor element that has a specific class. By clicking Accept all cookies, you agree Stack Exchange can store cookies on your device and disclose information in accordance with our Cookie Policy. When I click on any DOM element I want to check if its parents element contains a specific class or not. How to make use of a 3 band DEM for analysis? Is there anything called Shallow Learning? Check if an element contains a class in JavaScript? : |$)'. Browse other questions tagged, Where developers & technologists share private knowledge with coworkers, Reach developers & technologists worldwide. So did className.split(' ') which is effectively the same. operator to short-circuit instead of throwing an error if the element has no parent. Just to not overcomplicate my regular expression it would be /\s*class_name_you_are_searching_for\s*/.test(myElement.className), @pqsk - i write my own libraries for future use. I don't want to use any library, just vanilla JS. Just to add to the answer for people trying to find class names within inline SVG elements. property returns the DOM node's parent element or null if the node has no element's class list and false otherwise. However, it has no support for an ancient browser called Internet Explorer, and would require a polyfill. The advantage of this approach is that the code to execute for each class is arbitrary, like the one in the switch statement; in your example all the cases performed a similar operation, but tomorrow you may need to do different things for each. Can the logo of TSR help identifying the production time of old Products? This is the one I personally use; much cleaner and much less lines of code! Namespace-aware variants (DOM Level 2) DOM Level 1 methods for dealing with Attr nodes directly (seldom used) DOM Level 2 namespace-aware methods for dealing with Attr nodes directly (seldom used) setAttribute (DOM 1) setAttributeNS. If no such element exists, it returns null. @daGUY: What do you want to do with the switch statement anyway? So, you want to see if any of the ancestors, or siblings of ancestors, have a given class-name? The (capturing group) is unnecessary. rev2023.6.2.43474. selector or null if no element matches. First we check if classList exists if it does we can use the contains method which is supported by IE10+. Javascript detect if child of parent element has a class set, Elegant way of checking if one of the parentNodes has a certain class, How to check if an element class child has a specific class, Ways to find a safe route on flooded roads. Is Spider-Man the only Marvel character that has been represented as multiple non-human characters? Can the use of flaps reduce the steady-state turn radius at a given airspeed and angle of bank? The classList.contains By clicking Post Your Answer, you agree to our terms of service and acknowledge that you have read and understand our privacy policy and code of conduct. Making statements based on opinion; back them up with references or personal experience. method can be scoped to a specific element and returns the first element that is How can i make a condition of css classes using javascript? By clicking Post Your Answer, you agree to our terms of service and acknowledge that you have read and understand our privacy policy and code of conduct. Element.closest() Would a revenue share voucher be a "security"? Checking the class attribute rather than className is currently the most cross-browser way to check class if you are working with svg elements. which one to use in this conversation? Is Spider-Man the only Marvel character that has been represented as multiple non-human characters? Javascript (target.className) if element has multiple classnames. check if the returned value is not equal to null. A condition to determine if the parent container child elements contains of specific class and do something, How to check if an element class child has a specific class, condition to check whether any element has a specific class. Thrown if the selectors is not a valid CSS selector. How to check if an html element with a specific class exists in JavaScript? Here is another solution but it's up to you. FYI: for svg elements, in browsers such as a safari, className is not a string but an object of type svganimatedstring. This approach doesn't specifically check if the direct parent element contains the class, it checks if a parent element anywhere in the hierarchy contains the provided class. If no element that matches the provided selector exists, the closest() method Why is it "Gaudeamus igitur, *iuvenes dum* sumus!" Is it possible? step. div, so calling the closest() method and passing it a div selector returns method to get the closest parent element by tag. Does substituting electrons with muons change the atomic shell configuration? Is there anything called Shallow Learning? Making statements based on opinion; back them up with references or personal experience. for(var i in fns) iterates through the keys within the fns map. Is it OK to pray any five decades of the Rosary or do they have to be in the specific set of mysteries? Not the answer you're looking for? Is it possible for rockets to exist in a world that is only in the early stages of developing jet aircraft? I used this code to work with elements with no class: @lexa IE9 has no idea what a classList is. By clicking Post Your Answer, you agree to our terms of service and acknowledge that you have read and understand our privacy policy and code of conduct. The provided selector can be necessary. 576), AI/ML Tool examples part 3 - Title-Drafting Assistant, We are graduating the updated button styling for vote arrows. Check parents elements contain a specific CSS class by only using javascript? The Element.hasAttribute() method returns a @SuperUberDuper I was not suggesting that jQuery is more efficient than single purposed vanilla code, if that's what you're asking. To check if a parent element has a specific class: We used the null. Building a safer community: Announcing our new Code of Conduct, Balancing a PhD program with a startup career (Ep. Theoretical Approaches to crack large files encrypted with AES. If you haven't selected the parent element yet, you can do this in a single It has a contains() method that is useful for your purpose: If you are targeting Internet Explorer, (IE<10), you can manually parse the list of classes and look for 'drop' in them: split() parses the className to multiple names in an array. it returns the parent element. 9. Is there a legal reason that organizations often refuse to comment on an issue citing "ongoing litigation"? However, the parentElement property doesn't allow us to filter the results as because that is the correct Currently, I'm doing this: Does the policy change for AI-generated content affect users who (want to) How to tell if an HTML element has a particular class in JavaScript? of course other solutions would work, this is just my prefered way, From experience, this method can be quite risky: It will return true when you look for the class. The issue is that if I change the HTML to this there's no longer an exact match, so I get the default output of nothing (""). Remember that each test is doing 1000 iterations, so most of these are still very fast. indexOf() searches for an element in an array, if it can't find it, it returns -1. the e passed to an event handler is the event object, not the element that was clicked. Return value querySelector Using plain JavaScript (not jQuery), Is there any way to check if an element contains a class? https://github.com/remy/polyfills/blob/master/classList.js. Visit Mozilla Corporations not-for-profit parent, the Mozilla Foundation.Portions of this content are 19982023 by individual mozilla.org contributors. You can learn more about the related topics by checking out the following Can Bluetooth mix input from guitar and send it to headphones? To subscribe to this RSS feed, copy and paste this URL into your RSS reader. How do you find out if an HTML element has a certain class with plain Javascript? @KayceBasques: because we also add spaces to. Can I also say: 'ich tut mir leid' instead of 'es tut mir leid'? Thanks for the comment. Site design / logo 2023 Stack Exchange Inc; user contributions licensed under CC BY-SA. The other answers are much more robust but this certainly has it's use cases. has the body element as the parent. I added a new version of the code to eliminate this issue. I am trying in this way but can't achieve this goal. If you're not checking for classList to be undefined, ~(' ' + v.className + ' ').indexOf(' ' + classToFind + ' ') creeps ahead 5-15%. Enable JavaScript to view data. a class, First, that regex isn't totally reliable, or efficient. You can also make the selector more specific by using an angle bracket >. How can I shave a sheet of plywood into a wedge shim? If no element matches the selector, the closest() method returns null. Check if an element contains a class in JavaScript? Is there a reliable way to check if a trigger being fired was the result of a DML action from another *specific* trigger? Use the closest() method to get the closest parent element by class, e.g. Sort of just had an epiphany on how javascript works. We used the Insufficient travel insurance to cover the massive medical expenses for a visitor to US? Check if Element has a Child with given ID or Class in JS, ' element has child with id of child-3', ' element does NOT have child with id', If no element matches the provided selector, the, Check if Element has a Child with a given ID, Check if Element has a Child with a given Class, check if the returned value is not equal to null. If no element matches the provided selector, the closest() method returns Asking for help, clarification, or responding to other answers. This way newer browser will use the new implementation (which is much faster) and only old browsers will take the performance hit from the code. I don't want to use any library, just vanilla JS. The Element.matches() method returns true if the element would be selected by the specified selector string; otherwise, returns false. Building a safer community: Announcing our new Code of Conduct, Balancing a PhD program with a startup career (Ep. parent. Will return itself or the matching ancestor. How much of the power drawn by a chip turns into heat? DOM methods dealing with element's attributes: BCD tables only load in the browser with JavaScript enabled. In modern browsers, you can just use the contains method of Element.classList : If you want to use Element.classList but you also want to support older browsers, consider using this polyfill by Eli Grey. What are good reasons to create a city/nation in which a government wouldn't let you leave. Find centralized, trusted content and collaborate around the technologies you use most. document.firstElementChild returns tag then the classList attribute returns all classes added to it. Felix's code works well by using spaces as the delimiter. Instead of using the className property you'll need to use the getAttribute() method to grab the class name. is a string representing the name of the attribute. Are you checking the direct parent, or all parents? Im waiting for my US passport (am a dual citizen. Can the use of flaps reduce the steady-state turn radius at a given airspeed and angle of bank? The following example only checks if any of the element's direct children have You can also use the closest() method to get the closest parent element by Why does bunched up aluminum foil become so extremely hard to compress? The closest() method traverses the Element and its parents until it finds Does substituting electrons with muons change the atomic shell configuration? How to detect if any child elements within a parent element has a certain class? Two attempts of an if with an "and" are failing: if [ ] -a [ ] , if [[ && ]] Why? Not the answer you're looking for? Did an AI-enabled drone attack the human operator in a simulation environment? How do you check if a css class is present on an element? is not a span element. Why is it "Gaudeamus igitur, *iuvenes dum* sumus!" Should I include non-technical degree and non-engineering experience in my software engineer CV? How to check if parent element has a child element. it's more elegant to use because the code describes its functionality, but bottom line, it doesn't matter, do whatever you want :), 1. The donnez-moi or me donner? How to detect if any child elements within a parent element has a certain class?
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