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HTML5 Pre-resize images before uploading
...ataurl = canvas.toDataURL("image/png");
//Post dataurl to the server with AJAX
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How to Reload ReCaptcha using JavaScript?
I have a signup form with AJAX so that I want to refresh Recaptcha image anytime an error is occured (i.e. username already in use).
...
Safely turning a JSON string into an object
... ways to do it but here's how you do it in Prototype (JSON tutorial).
new Ajax.Request('/some_url', {
method:'get',
requestHeaders: {Accept: 'application/json'},
onSuccess: function(transport){
var json = transport.responseText.evalJSON(true);
}
});
Calling evalJSON() with true as the...
Logical operator in a handlebars.js {{#if}} conditional
...px;
margin: 5px;
border: 1px solid grey;
}
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.11.1/jquery.min.js"></script>
<script src="http://cdnjs.cloudflare.com/ajax/libs/handlebars.js/1.0.0/handlebars.min.js"></script>
<script id="template" type="...
How to get a DOM Element from a JQuery Selector
... in browsers too. Some attributes can be different. The classic example is AJAX calls. To do this properly in raw Javascript has about 7 fallback cases for XmlHttpRequest.
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Omitting the second expression when using the if-else shorthand
... answered Jun 17 '12 at 6:33
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7大富豪轶事:成功没有传奇 只有不断挑战并战胜 - 资讯 - 清泛网 - 专注C/C...
...画家给你画像才是你的骄傲!”
如果说是那个摄影师把一个穷孩子激励成了世界上最富有的人,似乎并不过分。
【财富箴言】
外国的狗眼也看人低。侮辱即动力,刺激即赐予。
2。华达李晓华:感情需要物质来解决
香港华...
sqlite 命令行创建一个空库 - 数据库(内核) - 清泛网 - 专注C/C++及内核技术
sqlite 命令行创建一个空库sqlite_create_empty_dbSQLite创建一个空白的数据库,具有被识别为有效的SQLite数据库的优势,比touch创建一个空文件好。$sqlite3 foo db "create table t(f int); drop table t;"可以通过以下方 SQLite创建一个空白的数据库...
能把一个图片放到另一个图片上层吗? - App应用开发 - 清泛IT社区,为创新赋能!
当然可以。
1、 图像放布局中,布局设背景图片。
2、 图像精灵放画布,画布设背景。
3、 屏幕设背景图片,图像组件放上面。
On select change, get data attribute value
... ' + $(this).find(':selected').data('id'));
});
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<select>
<option data-id="1">one</option>
<option data-id="2">two</option>
<option data-id="3">t...