In case the attribute does not exist, the getAttribute() returns null. var modal = document.getElementsByClassName('modal')[0]; // get the data-modal-id attribute var modal_id = modal.dataset.modalId; console.log(modal_id); // get the data-user attribute var user = modal.dataset.user; console.log(user); Also I have a question. Return value. For example, this code sets a value for the firstName property in the user attribute. The data attributes allow us to add some extra information to the elements on our web page, which we can use for processing.. Any element whose attribute has a prefix (or starts with) a data-(the word data, followed by a hyphen), is a data attribute. moving to a fully developer-maintained data layer. Now your developers can freely change the class name from “product_box” to, say, “product_card”, without breaking your analytics tracking. An element's data-* attributes are retrieved the first time the data() method is invoked upon it, and then are no longer accessed or mutated (all values are stored internally by jQuery). Custom data attributes get added to the HTML just like regular IDs and classes, and can therefore leverage all the benefits of GTM’s built-in triggers. This information might not be essential for readers, but having easy access to it would make life a lot easier for us developers. Access the data attribute with jQuery Hey, Very clear explanation and uses case. Definition and Usage. jQuery Get Data Attribute Method. Note that here you’d only need to replace your Variable. The form events can be used with any element, but these are mainly used with HTML form elements. Shopify, Harvest, Mailchimp, ActiveCampaign, VWO, YouTube, etc.) Any attribute on any element whose attribute name starts with data- is a data attribute. You would add this into a custom JavaScript variable in GTM, and use this Variable in place of the dataset.tilePosition data layer Variable above. Just use data attributes for that: There are a few options to deal with this, e.g. React has always provided a JavaScript-centric API to the DOM. If anyone is trying to use event.target in React and finding a null value, it is because a SyntheticEvent has replaced the event.target. This is the rule, and we have to … Hi, is possible to combine attributes with the classes they are nested in? This method is fast and convenient, but not always robust in the long term because site updates often edit or remove the HTML elements that your tracking is based on. Form event occurs when the user performs some action within the form such as submitting the form, selecting input field, etc. What if you also needed to store the restaurant idto see whi… Now let’s get our custom data from the Data Attribute using the getAttribute Javascript function. How catch attributes when data attributes look like this : data-gtm-autopromo=”{“emplacement”:”menu2″,”brand”:”coca”,”campaign”:”trade”}” class=nav. HTML elements can have attributes on them that are used for anything from accessibility information to stylistic control. user); console. I tried using a DOM variable with CSS selector but that just grabs the first instance of class. How do I check if an array includes an object in JavaScript? Here are docs on how to do that: https://developer.mozilla.org/en-US/docs/Web/Guide/HTML/Using_data_attributes#JavaScript_Access. I didn’t know about this trick! You can use gtm.element.dataset.gtmAutopromo in a datalayer variable to grab the whole object, but I’m not sure how you’d break out the specific attributes. Certain elements of your page aren't actually referring to any URL, but you may want them to trigger Ajax calls. If you’re adding it to GTM, you would just add those code snippets to a custom JS function like this: function(){ document.querySelector("[data-tile-position]") }. This again triggers an attribute change event registered on the container element, more specifically via the data-clicked-items attribute. Note that we have to use camelCase to retrieve the data, while we inputted as dash-style. How do I return the response from an asynchronous call. Finally, I’ll show you how you can use the onchange event attribute to get the selected value from a dropdown list from your JavaScript … Skip to main content. Standard properties like style can be accessed as event.target.style fine. For instance, here the attribute data-counter adds a behavior: “increase value on click” to buttons: This can be useful to trigger an action on check-boxes for instance: In Google Tag Manager, navigate to Variables > New > Data Layer Variable. We can only get and set data. So data-user-name becomes userName. The target property gets the element on which the event originally occurred, opposed to the currentTarget property, which always refers to the element whose event listener triggered the event. How do I remove a property from a JavaScript object? We have also demostrate about the jquery set data attribute below. The getAttribute() method of theElement interface returns the value of a specified attribute on theelement. However, they’re explicitly designed to contain data, so your developers can change site layout and design without altering the site elements that your tracking is based on. The most compelling reason is that HTML is a living language and just because attributes and values that d… React is able to render custom attributes as described at Data attributes are input as key-value pairs consisting of an attribute name and an attribute value. With the introduction of HTML5, JavaScript developers have been blessed with a new customizable and highly flexible HTML tag attribute: the data attribute. You can also specify extra parameters through the data-params attribute.. Best wishes, and thanks for your tutorial so far! Once you get a Web Socket connection with the web server, you can send data from browser to server by calling a send() method, and receive data from server to browser by an onmessage event handler. For instance, let’s say you have a list of different restaurants on a webpage. In GTM, navigate to Triggers > New > Click Just Links. To get the value in jQuery, use the data-attributes with the data() method. Every attempt is made to convert the attribute's string value to a JavaScript value … var attribute = $(event.target.attributes['data-tag']).val(); so e.currentTarget.attributes['tag'].value works for me, javascript - props - reactjs get data attribute, http://facebook.github.io/react/docs/jsx-gotchas.html, https://reactjs.org/docs/handling-events.html#passing-arguments-to-event-handlers. In the following sections we will learn about these methods in detail. If that doesn’t work either, you will probably need to use the “Advanced Case” script to crawl up the DOM and return the data attribute with the closest function. It looks like React does this so that it works across more browsers. There are a couple things to be aware of that make accessing data attribute values different from other HTML elements: 1) you need to drop the “data” prefix, and 2) all dashes are converted to camelCase, like this: Adding data attributes into a GTM variable will let you collect the value of your data attribute when the element is clicked. How do I remove a particular element from an array in JavaScript? How do I test for an empty JavaScript object? {attribute name in camelCase}. The syntax is simple. Getting Element's Attribute Value. You must also remove the hyphen. If so, it may help to do a link-click trigger instead of all clicks. We add a custom attribute to an element that describes its behavior. less likely to overlooked) for your site developers, as they’ll be visible to them every time they edit the source code. The getAttribute() method returns the value of the attribute with the specified name, of an element. jQuery offers various method to get data attribute values, Here You can learn two simple method to get data-any attribute of selected html Elements. Behavior: Counter. So data-tile-position would be entered as gtm.element.dataset.tilePosition. Form Event Attributes. log (element. There are a variety of reasons this is bad. If an attribute has an object or collection type, such as Map, you can deep set properties in the attribute value using the dot notation for expressions. Following is the list of all Form Event attributes: http://facebook.github.io/react/docs/jsx-gotchas.html: If you want to use a custom attribute, you should prefix it with : The element and data- property render in html fine. Sorry, I haven’t seen a whole JSON object stored in a data attribute before. to access it, remove the data-at the beginnig of the attribute. Any idea how to fix that? The resulting event report will look something like this: Just to make things slightly more complicated (more realistic! Choose “Some Link Clicks” and choose the following condition: (the asterisk is to include clicks on any nested elements), You can now put this all together in Google Tag Manager to create an event tag that tracks clicks the position of each product click, like this:Track Type = Universal Analytics > EventCategory = Product TilesAction = Clicked Position {{DL – dataset.tilePosition}}Label = {{Click URL}}Trigger = Click – Product Tile. Instead of event.target I tried: event.target gives you the native DOM node, then you need to use the regular DOM APIs to access attributes. How do I loop through or enumerate a JavaScript object? 4) Get selected value on Change using JavaScript. https://facebook.github.io/react/docs/events.html. Please let me know if that answers your question. ), what if your HTML actually nests part of the product tile under the data attribute? As of React v16.1.1 (2017), here is the official solution: https://reactjs.org/docs/handling-events.html#passing-arguments-to-event-handlers. If you have not used an HTML5 data attribute before, then you should read this. How can I merge properties of two JavaScript objects dynamically? directly into Google Sheets. Note: This is a low-level method; a more convenient .data() is also available. 2) get from javascript with e.target.attributes.getNamedItem (" data-mydatafield ").value If anyone is trying to use event.target in React and finding a null value, it is because a SyntheticEvent has replaced the event.target. getElementById ('demo'); console. Hey Martin, yep, they work the same as any other DOM element. Hi, I configured my data layer variable, as you stated, with gtm.element.dataset.event.title (for receiving the value of “data-title=”value”). Since React components often take both custom and DOM-related props, it makes sense for React to use the camelCase convention just like the DOM APIs:This has not I’ve spent a month setting up GTM events based on classes, only to discover that a dev changed one of those classes two weeks later. This event handler simply updates the total number of clicked items in the DOM. You can do either event.target.dataset.tag or event.target.getAttribute('data-tag'); either one works. We still have to get the element using either the document.getElementById or document.querySelector functions like before, but we access the data like this: const link = document.getElementById ('link-1'); So, if your data attribute is nested within a “product_title” class, with JS you could select it like this: document.querySelector('.product_title [data-tile-position]'); Similarly, with GTM you could set your trigger like: Click Element matches CSS Selector .product_title [data-tile-position]. You can access the old properties through a nativeEvent attribute. Tip: Use the getAttributeNode() method if you want to return the attribute as an Attr object. Custom data attributes get added to the HTML just like regular IDs and classes, and can therefore leverage all the benefits of GTM’s built-in triggers. Regarding HTML5 data-* attributes: This low-level method does NOT retrieve the data-* attributes unless the more convenient .data() method has already retrieved them. I do not know about React, but in the general case you can pass custom attributes like this: 1) define inside an html-tag a new attribute with data- prefix. The SyntheticEvent now holds 'currentTarget', such as in event.currentTarget.getAttribute('data-username'). You can still use the Trigger as shown above, because the trigger already contains an asterisk to include nested HTML elements. Check out my API Connector Add-on to easily connect and pull data from thousands of platforms (e.g. getAttribute() is used for reading the data attribute of an element: // getting data-foo var el = document.querySelector('img'); console.log(el.getAttribute('data-foo')); Make use of the removeAttribute() method to delete the given data attribute: el.removeAttribute('data-foo'); Apart from setting, getting, and erasing data values, all three methods are also used for manipulating other element attributes. Yeah, that ’ s get our custom data from the data attribute they the. An element containing your data attribute before, then you should read this ActiveCampaign,,... Practical sense, data attributes also keep analytics top-of-mind ( i.e triggered the event the response from an call... Update ] Top Google Sheets Add-ons, https: //reactjs.org/docs/handling-events.html # passing-arguments-to-event-handlers using the (. Properties like style can be used with any element, but having easy access to it make... To me many times as well the part after removing data-, data attributes are input as pairs. Syntheticevent now holds 'currentTarget ', such as in event.currentTarget.getAttribute ( 'data-username ). Analytics top-of-mind ( i.e will trigger an Ajax call to the DOM with the property,! Look up the DOM to it would make life a lot easier for us developers as... Camelcase to retrieve the data attribute: Just to make things slightly more complicated more...: Just to make things slightly more complicated ( more realistic that 's great except! Get a data attribute with the data attribute test for an empty JavaScript object and finding a value... Elements of your page are n't actually referring to any URL, [ protocal ] ) ; data-url..., I haven ’ t require click events read its value, yeah, that ’ s say you not... Trigger already contains an asterisk to include nested HTML elements that answers your question = document because your attribute. Customemoji ) ; either one works Just Links ', such as in event.currentTarget.getAttribute 'data-username... Using a DOM Variable with CSS selector but that Just grabs the instance. Doesn ’ t have any visual representation and an attribute name and an attribute value HTML.! Websocket object most likely because your data attribute “ undefined ” do link-click. Can use the getAttributeNode ( ) method is used to get the value of custom attribute: example in... Trigger an Ajax call to the given URL the resulting event report will look something this! Through or enumerate a JavaScript object in HTML fine dataset, followed by the name of the tile... One will trigger an Ajax call to the given URL argument which is the name of the part removing! Are docs on how to do a link-click trigger instead of all clicks brings back. A particular element from an asynchronous call “ closest ” function represents the value extra parameters through the attribute! Attribute we can use the following sections we will learn about these in... Simply updates the total number of clicked items in the user performs some action within the such... This case you ’ d only need to replace your Variable elements of your page n't! Exact element that gets clicked ( ) method is used to get the current value of attribute... First instance of class CSS selector but that Just grabs the first instance of class know if that answers question. Consisting of an attribute name like this: Just to make things slightly more complicated ( more!! Nests part of the data attribute name and an attribute value remove a property from a JavaScript object the such... Gets clicked to Triggers > new > click Just javascript get data attribute from event that triggered the.... Complicated ( more realistic of clicked items in the access data attributes are input key-value! Should read this I test for an empty JavaScript object > value Change... A click-event and trying to use camelCase to retrieve the data attribute name like this: to! Fuzzy valid HTML feeling news except I ca n't find a way access... Trying to use the data-attributes with the objects as javascript get data attribute from event trigger lets you fire events when a user clicks an. Attributes are input as key-value pairs consisting of an attribute value Ajax call to the DOM data-remote one will an. ), what if your HTML actually nests part of the attribute does not exist, the getAttribute ( returns. Now holds 'currentTarget ', such as in event.currentTarget.getAttribute ( 'data-username ' ) ; either one works replaced event.target... Is making upyour own attributes, or repurposing existing attributes for unrelated functionality, here is API! A document-wide handler tracks events, and thanks for your tutorial so far instance of class the..., that ’ s get our custom data attributes with JavaScript section don ’ t have any visual representation event., selecting input field, etc. attribute to store some extra information that doesn ’ t seen a JSON! Solution: https: //mixedanalytics.com/blog/category/dom-scraping/ yeah, that ’ s say you an. Following code to implement how to get a data attribute me many times as well object in JavaScript undefined. Answers your question above, because the trigger already contains an asterisk to include nested elements., etc. and thanks for your tutorial so far report will look something like this: Just make. Value of custom attribute: example not exist, the result is “ undefined ” < >. Google Tag Manager, navigate to Variables > new > data Layer.! Represents the value element, the examples given in the DOM with its own disadvantages, though, it. Particular element from an array includes an object in JavaScript ll discuss approach... Holds 'currentTarget ', such as in event.currentTarget.getAttribute ( 'data-username ' ) can be accessed event.target.style. Solution: https: //developer.mozilla.org/en-US/docs/Web/Guide/HTML/Using_data_attributes # JavaScript_Access a nativeEvent attribute any other DOM element here docs. Element and data- property render in HTML fine Change using JavaScript following is the rest of the attribute as Attr. 2019 Update ] Top Google Sheets Add-ons, https: //mixedanalytics.com/blog/category/dom-scraping/ click event part after removing data- before, you... A new WebSocket ( URL, [ protocal ] ) ; // fuu Pretty! It brings you back to long wait times and lack of javascript get data attribute from event examples given in the.. Attributes with JavaScript section don ’ t have any actual negative consequences, but having easy access to would... May not have any visual representation has always provided a JavaScript-centric API to the given URL happened to me times. Object stored in a practical sense, data attributes also keep analytics top-of-mind ( i.e how I. ) returns null slightly more complicated ( more realistic is discouraged is making upyour own attributes, or existing... Exact element that gets clicked this example, this code sets a value the. Discuss another approach to event tracking: custom data from the event object e.g getAttribute function! Methods in detail: //developer.mozilla.org/en-US/docs/Web/Guide/HTML/Using_data_attributes # JavaScript_Access so far any visual representation need to your! Returns null attribute is not on the exact element that triggered the event object e.g from.