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How do I check if file exists in jQuery or pure JavaScript?
... of the image which has not finished downloading yet. You'd have to add an onload handler for this to work. This is not a reliable approach for that exact reason.
– dudewad
Dec 21 '13 at 4:09
...
Force browser to download image files on click
...();
xhr.open("GET", url, true);
xhr.responseType = "blob";
xhr.onload = function(){
var urlCreator = window.URL || window.webkitURL;
var imageUrl = urlCreator.createObjectURL(this.response);
var tag = document.createElement('a');
tag.href = imageUrl;
...
Accessing JPEG EXIF rotation data in JavaScript on the client side
...entation(file, callback) {
var reader = new FileReader();
reader.onload = function(e) {
var view = new DataView(e.target.result);
if (view.getUint16(0, false) != 0xFFD8)
{
return callback(-2);
}
var length = view.byteLength, offse...
How to include js file in another js file? [duplicate]
...
In case of your first suggestion one have to use imported.onload to cascade the scripts. But in the case we continue to have the same problems which I described.
– Oleg
Jan 9 '11 at 0:09
...
ArrayBuffer to base64 encoded string
...application/octet-binary'});
var reader = new FileReader();
reader.onload = function(evt){
var dataurl = evt.target.result;
callback(dataurl.substr(dataurl.indexOf(',')+1));
};
reader.readAsDataURL(blob);
}
//example:
var buf = new Uint8Array([11,22,33]);
arrayBuffer...
ng-model for `` (with directive DEMO)
...t) {
var reader = new FileReader();
reader.onload = function (loadEvent) {
scope.$apply(function () {
scope.fileread = loadEvent.target.result;
});
}
reader.readAsDataURL(c...
How do I fit an image (img) inside a div and keep the aspect ratio?
...nction() {
var img = document.getElementById('container').firstChild;
img.onload = function() {
if(img.height > img.width) {
img.height = '100%';
img.width = 'auto';
}
};
}());
</script>
CSS
#container {
width: 48px;
height: 48px;
}
#container img {
wi...
Pure JavaScript Send POST Data Without a Form
...'application/json');
xhr.send(JSON.stringify({
value: 'value'
}));
xhr.onload = function() {
console.log("HELLO")
console.log(this.responseText);
var data = JSON.parse(this.responseText);
console.log(data);
}
</script></body></html>
Python server (for testing):
impo...
Chrome ignores autocomplete=“off”
...t;input type="password" id="some_id" autocomplete="new-password">
JS (onload):
(function() {
var some_id = document.getElementById('some_id');
some_id.type = 'text';
some_id.removeAttribute('autocomplete');
})();
or using jQuery:
$(document).ready(function() {
var some_id = ...
Convert base64 string to ArrayBuffer
...r to blob:" + blob)
var fileReader = new FileReader();
fileReader.onload = function() {
var dataUrl = fileReader.result;
console.log("blob to dataUrl: " + dataUrl);
var base64 = dataUrl.substr(dataUrl.indexOf(',')+1)
console.log("dataUrl to base64: " + base64)...