How do you add an onload event to an element?
Can I use:
<div onload="oQuickReply.swap();" ></div>
for this?
No, you can't. The easiest way to make it work would be to put the function call directly after the element
Example:
...
<div id="somid">Some content</div>
<script type="text/javascript">
oQuickReply.swap('somid');
</script>
...
or - even better - just in front of </body>:
...
<script type="text/javascript">
oQuickReply.swap('somid');
</script>
</body>
...so it doesn't block the following content from loading.
You can trigger some js automatically on an IMG element using onerror, and no src.
<img src onerror='alert()'>
The onload event can only be used on the document(body) itself, frames, images, and scripts. In other words, it can be attached to only body and/or each external resource. The div is not an external resource and it's loaded as part of the body, so the onload event doesn't apply there.
onload event it only supports with few tags like listed below.
<body>, <frame>, <iframe>, <img>, <input type="image">, <link>, <script>, <style>
Here the reference for onload event
Try this! And never use trigger twice on div!
You can define function to call before the div tag.
$(function(){
$('div[onload]').trigger('onload');
});
DEMO: jsfiddle
I just want to add here that if any one want to call a function on load event of div & you don't want to use jQuery(due to conflict as in my case) then simply call a function after all the html code or any other code you have written including the function code and
simply call a function .
/* All Other Code*/
-----
------
/* ----At the end ---- */
<script type="text/javascript">
function_name();
</script>
OR
/* All Other Code*/
-----
------
/* ----At the end ---- */
<script type="text/javascript">
function my_func(){
function definition;
}
my_func();
</script>
I needed to have some initialization code run after a chunk of html (template instance) was inserted, and of course I didn't have access to the code that manipulates the template and modifies the DOM. The same idea holds for any partial modification of the DOM by insertion of an html element, usually a <div>.
Some time ago, I did a hack with the onload event of a nearly invisible <img> contained in a <div>, but discovered that a scoped, empty style will also do:
<div .... >
<style scoped="scoped" onload="dosomethingto(this.parentElement);" > </style>
.....
</div>
Update(Jul 15 2017) -
The <style> onload is not supported in last version of IE. Edge does support it, but some users see this as a different browser and stick with IE. The <img> element seems to work better across all browsers.
<div...>
<img onLoad="dosomthing(this.parentElement);" src="data:image/gif;base64,R0lGODlhAQABAIAAAP///wAAACH5BAEAAAAALAAAAAABAAEAAAICRAEAOw==" />
...
</div>
To minimize the visual impact and resource usage of the image, use an inline src that keeps it small and transparent.
One comment I feel I need to make about using a <script>is how much harder it is to determine which <div> the script is near, especially in templating where you can't have an identical id in each instance that the template generates. I thought the answer might be document.currentScript, but this is not universally supported. A <script> element cannot determine its own DOM location reliably; a reference to 'this' points to the main window, and is of no help.
I believe it is necessary to settle for using an <img> element, despite being goofy. This might be a hole in the DOM/javascript framework that could use plugging.
Avoid using any interval-based methods (as they are not performant and accurate) and use MutationObserver targeting a parent div of dynamically loaded div for better efficiency.
Update: Here's a handy function I wrote. Use it like this:
onElementLoaded("div.some_class").then(()=>{}).catch(()=>{});
/**
*
* Wait for an HTML element to be loaded like `div`, `span`, `img`, etc.
* ex: `onElementLoaded("div.some_class").then(()=>{}).catch(()=>{})`
* #param {*} elementToObserve wait for this element to load
* #param {*} parentStaticElement (optional) if parent element is not passed then `document` is used
* #return {*} Promise - return promise when `elementToObserve` is loaded
*/
function onElementLoaded(elementToObserve, parentStaticElement) {
const promise = new Promise((resolve, reject) => {
try {
if (document.querySelector(elementToObserve)) {
console.log(`element already present: ${elementToObserve}`);
resolve(true);
return;
}
const parentElement = parentStaticElement
? document.querySelector(parentStaticElement)
: document;
const observer = new MutationObserver((mutationList, obsrvr) => {
const divToCheck = document.querySelector(elementToObserve);
if (divToCheck) {
console.log(`element loaded: ${elementToObserve}`);
obsrvr.disconnect(); // stop observing
resolve(true);
}
});
// start observing for dynamic div
observer.observe(parentElement, {
childList: true,
subtree: true,
});
} catch (e) {
console.log(e);
reject(Error("some issue... promise rejected"));
}
});
return promise;
}
Implementation details:
HTML:
<div class="parent-static-div">
<div class="dynamic-loaded-div">
this div is loaded after DOM ready event
</div>
</div>
JS:
var observer = new MutationObserver(function (mutationList, obsrvr) {
var div_to_check = document.querySelector(".dynamic-loaded-div"); //get div by class
// var div_to_check = document.getElementById('div-id'); //get div by id
console.log("checking for div...");
if (div_to_check) {
console.log("div is loaded now"); // DO YOUR STUFF!
obsrvr.disconnect(); // stop observing
return;
}
});
var parentElement = document.querySelector("parent-static-div"); // use parent div which is already present in DOM to maximise efficiency
// var parentElement = document // if not sure about parent div then just use whole 'document'
// start observing for dynamic div
observer.observe(parentElement, {
// for properties details: https://developer.mozilla.org/en-US/docs/Web/API/MutationObserverInit
childList: true,
subtree: true,
});
we can use MutationObserver to solve the problem in efficient way adding a sample code below
<!DOCTYPE html>
<html>
<head>
<title></title>
<style>
#second{
position: absolute;
width: 100px;
height: 100px;
background-color: #a1a1a1;
}
</style>
</head>
<body>
<div id="first"></div>
<script>
var callthis = function(element){
element.setAttribute("tabIndex",0);
element.focus();
element.onkeydown = handler;
function handler(){
alert("called")
}
}
var observer = new WebKitMutationObserver(function(mutations) {
mutations.forEach(function(mutation) {
for (var i = 0; i < mutation.addedNodes.length; i++)
if(mutation.addedNodes[i].id === "second"){
callthis(mutation.addedNodes[i]);
}
})
});
observer.observe(document.getElementById("first"), { childList: true });
var ele = document.createElement('div');
ele.id = "second"
document.getElementById("first").appendChild(ele);
</script>
</body>
</html>
In November 2019, I am seeking a way to create a (hypothetical) onparse EventListener for <elements> which don't take onload.
The (hypothetical) onparse EventListener must be able to listen for when an element is parsed.
Third Attempt (and Definitive Solution)
I was pretty happy with the Second Attempt below, but it just struck me that I can make the code shorter and simpler, by creating a tailor-made event:
let parseEvent = new Event('parse');
This is the best solution yet.
The example below:
Creates a tailor-made parse Event
Declares a function (which can be run at window.onload or any time) which:
Finds any elements in the document which include the attribute data-onparse
Attaches the parse EventListener to each of those elements
Dispatches the parse Event to each of those elements to execute the Callback
Working Example:
// Create (homemade) parse event
let parseEvent = new Event('parse');
// Create Initialising Function which can be run at any time
const initialiseParseableElements = () => {
// Get all the elements which need to respond to an onparse event
let elementsWithParseEventListener = document.querySelectorAll('[data-onparse]');
// Attach Event Listeners and Dispatch Events
elementsWithParseEventListener.forEach((elementWithParseEventListener) => {
elementWithParseEventListener.addEventListener('parse', updateParseEventTarget, false);
elementWithParseEventListener.dataset.onparsed = elementWithParseEventListener.dataset.onparse;
elementWithParseEventListener.removeAttribute('data-onparse');
elementWithParseEventListener.dispatchEvent(parseEvent);
});
}
// Callback function for the Parse Event Listener
const updateParseEventTarget = (e) => {
switch (e.target.dataset.onparsed) {
case ('update-1') : e.target.textContent = 'My First Updated Heading'; break;
case ('update-2') : e.target.textContent = 'My Second Updated Heading'; break;
case ('update-3') : e.target.textContent = 'My Third Updated Heading'; break;
case ('run-oQuickReply.swap()') : e.target.innerHTML = 'This <code><div></code> is now loaded and the function <code>oQuickReply.swap()</code> will run...'; break;
}
}
// Run Initialising Function
initialiseParseableElements();
let dynamicHeading = document.createElement('h3');
dynamicHeading.textContent = 'Heading Text';
dynamicHeading.dataset.onparse = 'update-3';
setTimeout(() => {
// Add new element to page after time delay
document.body.appendChild(dynamicHeading);
// Re-run Initialising Function
initialiseParseableElements();
}, 3000);
div {
width: 300px;
height: 40px;
padding: 12px;
border: 1px solid rgb(191, 191, 191);
}
h3 {
position: absolute;
top: 0;
right: 0;
}
<h2 data-onparse="update-1">My Heading</h2>
<h2 data-onparse="update-2">My Heading</h2>
<div data-onparse="run-oQuickReply.swap()">
This div hasn't yet loaded and nothing will happen.
</div>
Second Attempt
The First Attempt below (based on #JohnWilliams' brilliant Empty Image Hack) used a hardcoded <img /> and worked.
I thought it ought to be possible to remove the hardcoded <img /> entirely and only dynamically insert it after detecting, in an element which needed to fire an onparse event, an attribute like:
data-onparse="run-oQuickReply.swap()"
It turns out, this works very well indeed.
The example below:
Finds any elements in the document which include the attribute data-onparse
Dynamically generates an <img src /> and appends it to the document, immediately after each of those elements
Fires the onerror EventListener when the rendering engine parses each <img src />
Executes the Callback and removes that dynamically generated <img src /> from the document
Working Example:
// Get all the elements which need to respond to an onparse event
let elementsWithParseEventListener = document.querySelectorAll('[data-onparse]');
// Dynamically create and position an empty <img> after each of those elements
elementsWithParseEventListener.forEach((elementWithParseEventListener) => {
let emptyImage = document.createElement('img');
emptyImage.src = '';
elementWithParseEventListener.parentNode.insertBefore(emptyImage, elementWithParseEventListener.nextElementSibling);
});
// Get all the empty images
let parseEventTriggers = document.querySelectorAll('img[src=""]');
// Callback function for the EventListener below
const updateParseEventTarget = (e) => {
let parseEventTarget = e.target.previousElementSibling;
switch (parseEventTarget.dataset.onparse) {
case ('update-1') : parseEventTarget.textContent = 'My First Updated Heading'; break;
case ('update-2') : parseEventTarget.textContent = 'My Second Updated Heading'; break;
case ('run-oQuickReply.swap()') : parseEventTarget.innerHTML = 'This <code><div></code> is now loaded and the function <code>oQuickReply.swap()</code> will run...'; break;
}
// Remove empty image
e.target.remove();
}
// Add onerror EventListener to all the empty images
parseEventTriggers.forEach((parseEventTrigger) => {
parseEventTrigger.addEventListener('error', updateParseEventTarget, false);
});
div {
width: 300px;
height: 40px;
padding: 12px;
border: 1px solid rgb(191, 191, 191);
}
<h2 data-onparse="update-1">My Heading</h2>
<h2 data-onparse="update-2">My Heading</h2>
<div data-onparse="run-oQuickReply.swap()">
This div hasn't yet loaded and nothing will happen.
</div>
First Attempt
I can build on #JohnWilliams' <img src> hack (on this page, from 2017) - which is, so far, the best approach I have come across.
The example below:
Fires the onerror EventListener when the rendering engine parses <img src />
Executes the Callback and removes the <img src /> from the document
Working Example:
let myHeadingLoadEventTrigger = document.getElementById('my-heading-load-event-trigger');
const updateHeading = (e) => {
let myHeading = e.target.previousElementSibling;
if (true) { // <= CONDITION HERE
myHeading.textContent = 'My Updated Heading';
}
// Modern alternative to document.body.removeChild(e.target);
e.target.remove();
}
myHeadingLoadEventTrigger.addEventListener('error', updateHeading, false);
<h2>My Heading</h2>
<img id="my-heading-load-event-trigger" src />
use an iframe and hide it iframe works like a body tag
<!DOCTYPE html>
<html>
<body>
<iframe style="display:none" onload="myFunction()" src="http://www.w3schools.com"></iframe>
<p id="demo"></p>
<script>
function myFunction() {
document.getElementById("demo").innerHTML = "Iframe is loaded.";
}
</script>
</body>
</html>
Since the onload event is only supported on a few elements, you have to use an alternate method.
You can use a MutationObserver for this:
const trackElement = element => {
let present = false;
const checkIfPresent = () => {
if (document.body.contains(element)) {
if (!present) {
console.log('in DOM:', element);
}
present = true;
} else if (present) {
present = false;
console.log('Not in DOM');
}
};
const observer = new MutationObserver(checkIfPresent);
observer.observe(document.body, { childList: true });
checkIfPresent();
return observer;
};
const element = document.querySelector('#element');
const add = () => document.body.appendChild(element);
const remove = () => element.remove();
trackElement(element);
<button onclick="add()">Add</button>
<button onclick="remove()">Remove</button>
<div id="element">Element</div>
we can use all these tags with onload
<body>, <frame>, <frameset>, <iframe>, <img>, <input type="image">, <link>, <script> and <style>
eg:
function loadImage() {
alert("Image is loaded");
}
<img src="https://www.w3schools.com/tags/w3html.gif" onload="loadImage()" width="100" height="132">
I really like the YUI3 library for this sort of thing.
<div id="mydiv"> ... </div>
<script>
YUI().use('node-base', function(Y) {
Y.on("available", someFunction, '#mydiv')
})
See: http://developer.yahoo.com/yui/3/event/#onavailable
This is very simple solution and 100% working.
Just load an <img> tag inside the div or at last line of div, if you think you want to execute javascript, after loading all data in div.
As <img> tag supports onload event, so you can easily call javascript here like below:
<div>
<img onLoad="alert('Problem Solved');" src="data:image/gif;base64,R0lGODlhAQABAIAAAP///wAAACH5BAEAAAAALAAAAAABAAEAAAICRAEAOw==" />
</div>
This above image will show only a single Dot(.), which you even cant see normally.
Try it.
First to answer your question: No, you can't, not directly like you wanted to do so.
May be a bit late to answer, but this is my solution, without jQuery, pure javascript.
It was originally written to apply a resize function to textareas after DOM is loaded and on keyup.
Same way you could use it to do something with (all) divs or only one, if specified, like so:
document.addEventListener("DOMContentLoaded", function() {
var divs = document.querySelectorAll('div'); // all divs
var mydiv = document.getElementById('myDiv'); // only div#myDiv
divs.forEach( div => {
do_something_with_all_divs(div);
});
do_something_with_mydiv(mydiv);
});
If you really need to do something with a div, loaded after the DOM is loaded, e.g. after an ajax call, you could use a very helpful hack, which is easy to understand an you'll find it ...working-with-elements-before-the-dom-is-ready.... It says "before the DOM is ready" but it works brillant the same way, after an ajax insertion or js-appendChild-whatever of a div. Here's the code, with some tiny changes to my needs.
css
.loaded { // I use only class loaded instead of a nodename
animation-name: nodeReady;
animation-duration: 0.001s;
}
#keyframes nodeReady {
from { clip: rect(1px, auto, auto, auto); }
to { clip: rect(0px, auto, auto, auto); }
}
javascript
document.addEventListener("animationstart", function(event) {
var e = event || window.event;
if (e.animationName == "nodeReady") {
e.target.classList.remove('loaded');
do_something_else();
}
}, false);
I am learning javascript and jquery and was going through all the answer,
i faced same issue when calling javascript function for loading div element.
I tried $('<divid>').ready(function(){alert('test'}) and it worked for me. I want to know is this good way to perform onload call on div element in the way i did using jquery selector.
thanks
As all said, you cannot use onLoad event on a DIV instead but it before body tag.
but in case you have one footer file and include it in many pages. it's better to check first if the div you want is on that page displayed, so the code doesn't executed in the pages that doesn't contain that DIV to make it load faster and save some time for your application.
so you will need to give that DIV an ID and do:
var myElem = document.getElementById('myElementId');
if (myElem !== null){ put your code here}
I had the same question and was trying to get a Div to load a scroll script, using onload or load. The problem I found was that it would always work before the Div could open, not during or after, so it wouldn't really work.
Then I came up with this as a work around.
<body>
<span onmouseover="window.scrollTo(0, document.body.scrollHeight);"
onmouseout="window.scrollTo(0, document.body.scrollHeight);">
<div id="">
</div>
Link to open Div
</span>
</body>
I placed the Div inside a Span and gave the Span two events, a mouseover and a mouseout. Then below that Div, I placed a link to open the Div, and gave that link an event for onclick. All events the exact same, to make the page scroll down to bottom of page. Now when the button to open the Div is clicked, the page will jump down part way, and the Div will open above the button, causing the mouseover and mouseout events to help push the scroll down script. Then any movement of the mouse at that point will push the script one last time.
You could use an interval to check for it until it loads like this:
https://codepen.io/pager/pen/MBgGGM
let checkonloadDoSomething = setInterval(() => {
let onloadDoSomething = document.getElementById("onloadDoSomething");
if (onloadDoSomething) {
onloadDoSomething.innerHTML="Loaded"
clearInterval(checkonloadDoSomething);
} else {`enter code here`
console.log("Waiting for onloadDoSomething to load");
}
}, 100);
When you load some html from server and insert it into DOM tree you can use DOMSubtreeModified however it is deprecated - so you can use MutationObserver or just detect new content inside loadElement function directly so you will don't need to wait for DOM events
var ignoreFirst=0;
var observer = (new MutationObserver((m, ob)=>
{
if(ignoreFirst++>0) {
console.log('Element add on', new Date());
}
}
)).observe(content, {childList: true, subtree:true });
// simulate element loading
var tmp=1;
function loadElement(name) {
setTimeout(()=>{
console.log(`Element ${name} loaded`)
content.innerHTML += `<div>My name is ${name}</div>`;
},1500*tmp++)
};
loadElement('Michael');
loadElement('Madonna');
loadElement('Shakira');
<div id="content"><div>
You can attach an event listener as below. It will trigger whenever the div having selector #my-id loads completely to DOM.
$(document).on('EventName', '#my-id', function() {
// do something
});
Inthis case EventName may be 'load' or 'click'
https://api.jquery.com/on/#on-events-selector-data-handler
Here is a trick that worked for me,
you just need to put your div inside a body element
<body>
<!-- Some code here -->
<body onload="alert('Hello World')">
<div ></div>
</body>
<!-- other lines of code -->
</body>
Use the body.onload event instead, either via attribute (<body onload="myFn()"> ...) or by binding an event in Javascript. This is extremely common with jQuery:
$(document).ready(function() {
doSomething($('#myDiv'));
});
You cannot add event onload on div, but you can add onkeydown and trigger onkeydown event on document load
$(function ()
{
$(".ccsdvCotentPS").trigger("onkeydown");
});
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.2.3/jquery.min.js"></script>
<div onkeydown="setCss( );"> </div>`
Try this.
document.getElementById("div").onload = alert("This is a div.");
<div id="div">Hello World</div>
Try this one too. You need to remove . from oQuickReply.swap() to make the function working.
document.getElementById("div").onload = oQuickReplyswap();
function oQuickReplyswap() {
alert("Hello World");
}
<div id="div"></div>
I am able to avoid the below issue by making my div a direct child of body and appending a select to the div, but am not able to achieve the same results when the div is a child of a form within body (either when appending to the div or to the form).
I am just making a drop-down table (select element) that is added to the web page when the user clicks a button. The drop-down select shows when the div is the direct child of body, but not when it is a child of a form that is a child of body. When the button is clicked using the below method, the dropdown appears for like 0.25s and then the page returns to the original layout. The same occurs when trying to append directly to the form.
<!DOCTYPE html> <!--text_index.html-->
<html>
<head>
<meta charset="UTF-8">
<title>Add Drop Down Menu to HTML w/ JS on Button Click</title>
<link rel="stylesheet" type="text/css" href="test_styles.css">
</head>
<body>
<form id="form-button">
<div id="user-area">
<button id="dropdown-button">Add a dropdown menu!</button><br /><br />
</div>
</form>
<script src="test_script.js"></script>
</body>
</html>
Now the JS is shown below. The console returns no error but the select element does not remain in the browser window.
let materialArray = ['Select Your Material:',
'Kryptonite',
'Odium',
'Quartz'];
let formButton = document.getElementById('form-button');
let divUserArea = document.getElementById('user-area');
let dropdownBtn = document.getElementById('dropdown-button');
/***********************************************************************/
/****BEGIN LOOP W/ BUTTON CLICK AND NAMED FUNCTION****/
//NOTE: YOU CANNOT appendChild() ON A <DIV> INSIDE A <FORM>.
////IF YOU CAN THEN THERE IS SOME LOGIC THAT I AM MISSING.
////YOU CANNOT appendChild() DIRECTLY ON A FORM EITHER.
let newSelect = document.createElement("select");
let newOption = [];
function onClickDropdownBtn () {
for (let i = 0; i < materialArray.length; i++) {
newOption[i] = document.createElement("option"); //create the new option for the new HTML select element
newOption[i].text = materialArray[i]; //add the appropriate text to the new option
newSelect.add(newOption[i], i); //add the completed option to the HTML select element
}
divUserArea.appendChild(newSelect); //also tried formButton.appendChild(newSelect); and got same
result
return true;
}
dropdownBtn.addEventListener('click', onClickDropdownBtn);
if (onClickDropdownBtn === false) {
newSelect.style.display = 'hidden';
dropdownBtn.style.display = 'block';
} else {
newSelect.style.display = 'block';
dropdownBtn.style.display = 'hidden';
}
/****END LOOP W/ BUTTON CLICK AND NAMED FUNCTION ****/
Is there a way to append to the div inside the form, or to the form directly?
Thanks!
For gits and shiggles, here is the CSS. Maybe the issue is here?
select {
width: 200px;
height: 25px;
text-align: center;
}
button {
width: 200px;
height: 25px;
text-align: center;
}
When you put a <button> inside a form, the default type is submit, which makes the page "refresh" (that's why you only see your dropdown for a second).
You can either change your button type, like this:
<button type='button' id="dropdown-button">Add a dropdown menu!</button>
Or you can add the event.PreventDefault() in your click function to avoid the form submission, like this:
function onClickDropdownBtn (event) {
for (let i = 0; i < materialArray.length; i++) {
newOption[i] = document.createElement("option"); //create the new option for the new HTML select element
newOption[i].text = materialArray[i]; //add the appropriate text to the new option
newSelect.add(newOption[i], i); //add the completed option to the HTML select element
}
divUserArea.appendChild(newSelect); //also tried formButton.appendChild(newSelect); and got same
event.preventDefault();
return true;
}
That will keep your dropdown component in the page and you can go from there.
Forms have the default behaviour of reloading the page (they evolved in an era before SPAs). Your code works just fine, except that it also reloads the page and you lose the state (in your case, the select element).
Just change onClickDropdownBtn() to
function onClickDropdownBtn (event) {
event.preventDefault()
...
and it should be ready to go!
I have an element that is added using javascript to my HTML document. I am trying to remove it when I click on that same element. I do not know the id of the element yet, I have just included a sample id for now.
I have already tried looking at this answer here (Creating an element that can remove it self?) and tried using the method provided here (Javascript: How to make a Control send itself in a method) as well to reference the element but have had no luck.
Here is what I have so far.
function remove() {
var element = this.id;
//I have also tried using document.getElementByID(this.id)
element.remove();
//I have also tried using element.parentNode.removeChild(element); to remove the element.
}
<div id="i" onclick="remove(this)">Sample text</div>
I am not sure what I am doing wrong but this is the error I keep getting.
"Uncaught TypeError: Cannot read property 'remove' of undefined"
You have to pass this through the function call in html onclick so it could refer to the element then you have to use it as parameter in the function definition, otherwise, if you use this in the function definition, it will just refer to the window object.
This will work fine
function remove(el) {
var element = el;
element.remove();
}
<div id="i" onclick="remove(this)">Sample text</div>
Minimalist solution:
<div onclick="this.remove()">Sample text</div>
your remove function should be like this
function remove(elem){
elem.parentNode.removeChild(elem);
}
your are passing a this in your html, which is the html tag itself, however, when you using this in your js function, that this is the function itself, so you will get error by trying to use the js function's id as element id
"Uncaught TypeError: Cannot read property 'remove' of undefined"
This means the object you're trying to remove doesn't exist what makes complete sense because this.id isn't defined anywhere.
To correctly reference a html element using javascript you need to use the document.getElementById() function. The id of the html element you're trying to remove is i - so try document.getElementById("i");
function remove() {
var element = document.getElementById("i");
element.remove();
}
<div id="i" onclick="remove(this)">Sample text</div>
Another - more elegant way - is to pass a reference to the object you clicked on with the callback function. This is simply done by adding event as a parameter. Inside the callback you can reference the element using e.target.
function remove(e) {
var element = e.target;
element.remove();
}
<div id="i" onclick="remove(event)">Sample text</div>
To match your query, using outerHTML will remove the elements and his components from the DOM.
This require to use document.getElementById().
function remove(me) {
document.getElementById(me).outerHTML = ""
}
<div id="i" onclick="remove(this.id)">Sample text</div>
A better coding practice, as the post is upvoted:
Using 3 chars for Id of elements is better
We can filter elements by type with target.nodeName, but the type need to be written in uppercase.
document.body.addEventListener("mousedown", function(e) {
console.log(e.target.nodeName, e.target.id)
if (e.target.nodeName === "DIV"){
document.getElementById(e.target.id).outerHTML = ""
}
}, false)
<body>
<div id="el1">Sample text</div>
<div id="el2">Sample text</div>
<div id="el3">Sample text</div>
<div id="el4">Sample text</div>
<div id="el5">Sample text</div>
<div id="el6">Sample text</div>
</body>
If you want to use this in normal JS function you'll need to bind this to function. Else it'll default to window object, this in normal js points to window object. If you want to use this in to point to an object invoking the function then use ()=>{} arrow functions
function remove(element) {
console.log(this) //will log Window Object
//I have also tried using document.getElementByID(this.id)
element.remove();
//I have also tried using element.parentNode.removeChild(element); to remove the element.
}
<div id="i" onclick="remove(this)">Sample text</div>
first grab your element:
const myDiv = document.querySelector('div');
then add click event listener to it, so when it gets clicked on, the callback method gets invoked, where 'e.target' acts as 'this', and finally remove it using remove():
myDiv.addEventListener('click', function(e){
e.target.remove();
});
Don't use inline event listeners (the one on the button in this example is only for simplification).
function createDiv() {
let div = document.createElement('div');
div.textContent = `Sample text, created on ${new Date()}`;
div.addEventListener('click', remove);
document.body.appendChild(div);
}
function remove(e) {
e.target.remove();
}
<button type="button" onclick="createDiv()">Add a div</button>
If you cannot access the element for adding a listener, you can also use a delegate listener:
document.addEventListener('click', remove);
function remove(e) {
// you need some check here if you don't want any element to be removed on clicking it
e.target.remove();
}
<div>foo</div>
<div>Sample text</div>
I would do something like this, so your JavaScript and CSS are cached. Just make sure you change your filenames when updating your files upon deployment (when people know your site exists).
//<![CDATA[
/* external.js */
var doc, bod, M, I, S, Q;// for use on other loads
addEventListener('load', function(){
doc = document; bod = doc.body;
M = function(tag){
return doc.createElement(tag);
}
I = function(id){
return doc.getElementById(id);
}
S = function(selector, within){
var w = within || doc;
return w.querySelector(selector);
}
Q = function(selector, within){
var w = within || doc;
return w.querySelectorAll(selector);
}
function remove(e){
e.parentNode.removeChild(e);
}
var sample = I('sample');
sample.onclick = function(){
remove(this);
}
}); // end load
//]]>
/* external.css */
*{
box-sizing:border-box; padding:0; margin:0;
}
html,body{
width:100%; height:100%;
}
body{
background:#ccc;
}
#content{
padding:7px;
}
<!DOCTYPE html>
<html xmlns='http://www.w3.org/1999/xhtml' xml:lang='en' lang='en'>
<head>
<meta charset='UTF-8' /><meta name='viewport' content='width=device-width, height=device-height, initial-scale:1' />
<title>Test Template</title>
<link type='text/css' rel='stylesheet' href='external.css' />
<script type='text/javascript' src='external.js'></script>
</head>
<body>
<div id='content'>
<div id='sample'>Sample Text</div>
</div>
</body>
</html>
I'm trying to add a class to a div by using the title attribute. Currently the alert is correct. However the class isn't added.
JS Part:
function index(clicked_id){
alert(clicked_id);
$('#sticky').attr("title", +clicked_id).addClass("glow");
}
HTML Part:
<div id="sticky" class="" title='sticky1' onclick='index(this.title)'</div>"
I don't know if I got your question right but I understood that you want to filter|find you div by the title. So maybe this code will help you:
function index(clicked_id){
alert(clicked_id);
$('#sticky [title="' + clicked_id + '"]').addClass("glow");
}
This is how I would do it:
$("[title*='sticky']").click(function(){
$(this).addClass("glow");
});
Here is the JSFiddle demo
Why do you need to do it like that? Can't you just set the class on the element clicked?
JavaScript
function index(el){
$(el).addClass("glow");
}
HTML
<div id="sticky" onclick='index(this)'></div>
Instead just pass this:
onclick='index(this)'
now in the function:
function index(el){
var e = $(el).attr('title');
$('#sticky[title="'+e+'"]').addClass("glow");
}
As the element itself is the target one then just use this:
function index(el){
$(el).addClass("glow");
}
or better to go unobtrusive, remove the inline event handler and use this way:
$('#sticky').on('click', function(e){
$(this).addClass("glow");
});
js at Question returns expected results. Missing closing > at html #sticky <div> tag at
onclick="index(this.title)"
following onclick attribute . Additionally,
+
should be removed at
+clicked_id
at .attr() setting title . javascript + operator attempting to convert clicked_id String to Number when placed before string
function index(clicked_id){
alert(clicked_id);
$('#sticky').attr("title", clicked_id).addClass("glow");
}
.glow {
color: purple;
}
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.11.1/jquery.min.js">
</script>
<div id="sticky" class="" title="sticky1" onclick="index(this.title)">click</div>