This function executes the given function once for each node in the NodeList. Created Jan 20, 2017. Sometimes that is exactly what you want. The NodeList object represents a collection of nodes. The querySelectorAll() method returns all elements in the document that matches a specified CSS selector(s), as a static NodeList object.
With this syntax, you can do a lot of cool stuff! The nodes can be accessed by index numbers. In other words, how to call addEventListener() on multiple elements at the same time? You can call querySelectorAll() on all elements with a specific class, then use forEach() to iterate on them: document . Instead of doing the for loop, use the forEach to select each 'div' element of the selectorAll, then apply the listener. Here is an example: anchors.forEach(anchor => { anchor.addEventListener('click', => { console.log('Link is clicked! – romellem May 25 '18 at 20:06 forEach() Method. The nodes can be accessed by index numbers. In this example, we'll quickly learn to use modern APIs such as the DOM querySelector() method and the querySelectorAll() method and how to iterate over a NodeList object using forEach().We'll also see some techniques used in browsers that don't support iterating over a NodeList using forEach() and how to convert a NodeList to an Array using the Array.from() method. 5. The loop is the simplest one conceptually.
And if not, ES6 allows us to easily "spread" an array-like object into an actually array. Si no, ¿cuál es la mejor manera de agregar EventListener a todos los nodos de NodeList? (ES2015) Spread syntax with forEach.
So something like this: [...nodeList].foreach should work as well. Embed. This comment has been minimized. querySelectorAll ( ' .some-class ' ). nodeList.foreach(el => el.addEventListener('click', callback)) should be adequate for most people. var divs = document.querySelectorAll('div'); [].forEach.call(divs, function(div) { // do whatever div.style.color = … The addEventListener() method attaches an event handler to the specified element. The index starts at 0. Tip: Use the document.addEventListener() method to attach an event handler to the document. – Reinstate Monica Cellio Jan 9 '18 at 14:42 @Archer yup thank u.Already did.I use Array.from change nodelist to array but this didn't work. The NodeList object represents a collection of nodes.
Tip: Use the removeEventListener() method to remove an event handler that has been attached with the addEventListener() method. The index starts at 0. I'd like to perform the logic in the "onClick" through the event listener in jS but it only seems to run once? document.querySelectorAll(".my-button").addEventListener("click", function () { alert("Hi"); }); In the same way, you can do a forEach loop. The problem with using querySelectorAll and a for loop is that it creates a whole new event handler for each element in the array.. NodeList.prototype.forEach = function (callback) { for (var i = 0; i < this.length; i++) { callback(this[i], i); } }; Using: The simplest and easiest way to loop over the results returned by querySelectorAll() is by using the forEach() method. The querySelectorAll() method returns all elements in the document that matches a specified CSS selector(s), as a static NodeList object. One of those things is, turn a NodeList Object into an Array and use the Array forEach method on it. Star 5 Fork 0; Star Code Revisions 1 Stars 5.
You have to parse the collection (NodeList) that querySelectorAll returns, and assign the event listener to each element individually. Actualmente estoy usando el fragmento de código como se … You can call querySelectorAll() on all elements with a specific class, then use forEach() to iterate on them: One is using a loop, the other is using event bubbling. addEventListener ( ' click ' , event => { //handle click } }) In this example, we'll quickly learn to use modern APIs such as the DOM querySelector() method and the querySelectorAll() method and how to iterate over a NodeList object using forEach().We'll also see some techniques used in browsers that don't support iterating over a NodeList using forEach() and how to convert a NodeList to an Array using the Array.from() method.
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