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How To Save Canvas As An Image With canvas.toDataURL()?
...vas);
}
</script>
</head>
<body onload="draw()">
<canvas width=200 height=200 id="thecanvas"></canvas>
<div><button onclick="to_image()">Draw to Image</button></div>
<image id="theimage">&...
How to save an image to localStorage and display it on the next page?
... when you call reader.readAsDataURL the e.target.result sent to the reader.onload handler will be all you need.
– James H. Kelly
Jun 24 '15 at 17:22
...
How to submit a form with JavaScript by clicking a link?
... to "No wrap - in <body>" (or <head>). By default it's set to "onLoad" after which DOMContentReady doesn't fire anymore.
– ComFreek
Sep 5 '16 at 9:45
3
...
App Inventor 2 图片处理教程 - 缩放、裁剪、存储与转换 · App Inventor 2 中文网
...function resizeImage(dataUrl, maxW, maxH) {
var img = new Image();
img.onload = function() {
var ratio = Math.min(maxW / img.width, maxH / img.height);
var w = Math.floor(img.width * ratio);
var h = Math.floor(img.height * ratio);
var canvas = document.getElementById('canvas');
...
Ajax, back button and DOM updates
...om the standard cache) and re-rendered from scratch, including running all onload handlers. When returning to a page via the bfcache, the DOM is kept in its previous state, without needing to fire onload handlers (because the page is already loaded).
Note that the behavior of the bfcache is differ...
Adjust width and height of iframe to fit with content in it
... size. no need for script tags.
<iframe src="http://URL_HERE.html" onload='javascript:(function(o){o.style.height=o.contentWindow.document.body.scrollHeight+"px";}(this));' style="height:200px;width:100%;border:none;overflow:hidden;"></iframe>
...
How does the paste image from clipboard functionality work in Gmail and Google Chrome 12+?
...blob = item.getAsFile();
var reader = new FileReader();
reader.onload = function(event){
console.log(event.target.result)}; // data url!
reader.readAsDataURL(blob);
}
}
}
Once you have a data url you can display the image on the page. If you want to upload it inste...
Naming “class” and “id” HTML attributes - dashes vs. underlines [closed]
... var asyncScript = document.createElement('script');
asyncScript.onload = function(){
objectContainer.messageClass = new message(document.getElementById('message'));
objectContainer.messageClass.write('loaded');
}
asyncScript.src = 'message.js';
...
Can you determine if Chrome is in incognito mode via a script?
...
In main.html add an iframe,
<iframe id='testFrame' name='testFrame' onload='setUniqueSource(this)' src='' style="width:0; height:0; visibility:hidden;"></iframe>
, and some JavaScript code:
function checkResult() {
var a = frames[0].document.getElementById('test');
if (!a) ret...
download file using an ajax request
...req.open("GET", urlToSend, true);
req.responseType = "blob";
req.onload = function (event) {
var blob = req.response;
var fileName = req.getResponseHeader("fileName") //if you have the fileName header available
var link=document.createElement('a');
link....