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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...
Is JavaScript guaranteed to be single-threaded?
...ote to others commenters: Even though setTimeout/setInterval, HTTP-request onload events (XHR), and UI events (click, focus, etc.) provide a crude impression of multi-threadedness - they are still all executed along a single timeline - one at a time - so even if we don't know their execution order b...
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...
XMLHttpRequest Origin null is not allowed Access-Control-Allow-Origin for file:/// to file:/// (Serv
...target.files != undefined) {
var reader = new FileReader();
reader.onload = function (e) {
// Get all the contents in the file
var data = e.target.result;
// other stuffss................
};
reader.readAsText(e.target.files.item(0));
}
});
</...
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...