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How to detect internet speed in JavaScript?
...really accurate, the idea is load image with a known file size then in its onload event measure how much time passed until that event was triggered, and divide this time in the image file size.
Example can be found here: Calculate speed using javascript
Test case applying the fix suggested there:
...
How to get JSON from URL in JavaScript?
...();
xhr.open('GET', url, true);
xhr.responseType = 'json';
xhr.onload = function() {
var status = xhr.status;
if (status === 200) {
callback(null, xhr.response);
} else {
callback(status, xhr.response);
}
};
xhr.send();
};
And use it like...
How can I listen to the form submit event in javascript?
...t;input type="submit" name="submit">
</form>
JavaScript
window.onload = function() {
var form = document.querySelector("form");
form.onsubmit = submitted.bind(form);
}
function submitted(event) {
event.preventDefault();
}
...
Show an image preview before upload
...").onchange = function () {
var reader = new FileReader();
reader.onload = function (e) {
// get loaded data and render thumbnail.
document.getElementById("image").src = e.target.result;
};
// read the image file as a data URL.
reader.readAsDataURL(this.files[0]...
View list of all JavaScript variables in Google Chrome Console
...r","onmouseout","onmousemove","onmouseleave","onmouseenter","onmousedown","onloadstart","onloadedmetadata","onloadeddata","onload","onkeyup","onkeypress","onkeydown","oninvalid","oninput","onfocus","onerror","onended","onemptied","ondurationchange","ondrop","ondragstart","ondragover","ondragleave","...
How to make the window full screen with Javascript (stretching all over the screen)
...ll screen in JavaScript:
<script type="text/javascript">
window.onload = maxWindow;
function maxWindow() {
window.moveTo(0, 0);
if (document.all) {
top.window.resizeTo(screen.availWidth, screen.availHeight);
}
else if (document.layers || ...
Replace words in the body text
... <script type="text/javascript"> window.onload = clear(); function clear() { document.body.innerHTML = document.body.replace('ü', 'n'); } </script>
– Wahtever
Apr 5 '11 at 21...
JQuery - $ is not defined
...r script is loaded before that, you should make your code run after window.onload event, like this:
window.onload = function() {
//YOUR JQUERY CODE
}
`
so, your code will run only after the window load, when all assets have been loaded. In that point, the jQuery ($) will be defined.
If you us...
Difference between DOMContentLoaded and load events
...
DOMContentLoaded==window.onDomReady()
Load==window.onLoad()
A page can't be manipulated safely until the document is "ready." jQuery detects this state of readiness for you. Code included inside $(document).ready() will only run once the page Document Object Model (DOM) is r...
Executing elements inserted with .innerHTML
...cript-it-too
So it would look like this instead:
<img src="empty.gif" onload="alert('test');this.parentNode.removeChild(this);" />
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