Pass mouse events through absolutely

I'm attempting to capture mouse events on an element with another absolutely-positioned element on top of it. Right now, events on the absolutely-positioned element hit it and bubble up to its parent, but I want it to be "transparent" to these mouse events and forward them on to whatever is behind it. How should I implement this? pointer-events:none; Is a css-property that make

绝对通过鼠标事件

我试图在一个元素上捕获鼠标事件,并在其上放置另一个绝对位置的元素。 现在,绝对定位的元素上的事件触及它并冒泡到它的父项,但我希望它对这些鼠标事件是“透明的”,并将它们转发给它后面的任何事件。 我应该如何实现这一点? pointer-events:none; 是一个css属性,它使事件“通过”它所应用的DOM元素,并使事件发生在“below”元素上。 详情请参阅:https://developer.mozilla.org/en/css/pointer-events 它不支持IE 11;

How to emulate Javascript crypto AES

I have the following Javascript code in a web page: var decrypt = function (text, password){ var decipher = crypto.createDecipher('aes-256-cbc',password); var dec = decipher.update(text,'hex','utf8'); dec += decipher.final('utf8'); return dec; } , and I'm trying to reproduce it using Java, using the following: static MessageDigest MD5 = null; static { try {

如何模拟Javascript crypto AES

我在网页中有以下Javascript代码: var decrypt = function (text, password){ var decipher = crypto.createDecipher('aes-256-cbc',password); var dec = decipher.update(text,'hex','utf8'); dec += decipher.final('utf8'); return dec; } ,并且我试图使用Java重现它,使用以下内容: static MessageDigest MD5 = null; static { try { MD5 = MessageDigest.getInstance("MD5"); }

How is Node.js inherently faster when it still relies on Threads internally?

I just watched the following video: Introduction to Node.js and still don't understand how you get the speed benefits. Mainly, at one point Ryan Dahl (Node.js' creator) says that Node.js is event-loop based instead of thread-based. Threads are expensive and should only be left to the experts of concurrent programming to be utilized. Later, he then shows the architecture stack of Node

当Node.js仍然依赖于内部线程时,Node.js如何更快地发挥作用?

我刚刚观看了以下视频:介绍Node.js,但仍不明白如何获得速度优势。 主要的一点是,Ryan Dahl(Node.js的创建者)说Node.js是基于事件循环而不是基于线程的。 线程是昂贵的,应该只留给并发编程专家来利用。 后来,他显示了Node.js的架构栈,它有一个底层的C实现,它内部有自己的线程池。 所以很显然,Node.js开发人员不会直接启动他们自己的线程或直接使用线程池......他们使用异步回调。 我理解这一点。 我不明白的一

How to uncheck a radio button?

I have group of radio buttons that I want to uncheck after an AJAX form is submitted using jQuery. I have the following function: function clearForm(){ $('#frm input[type="text"]').each(function(){ $(this).val(""); }); $('#frm input[type="radio":checked]').each(function(){ $(this).checked = false; }); } With the help of this function, I can clear the values at the text

如何取消选中单选按钮?

我有一组单选按钮,我想在使用jQuery提交AJAX表单后取消选中。 我有以下功能: function clearForm(){ $('#frm input[type="text"]').each(function(){ $(this).val(""); }); $('#frm input[type="radio":checked]').each(function(){ $(this).checked = false; }); } 借助此功能,我可以清除文本框中的值,但无法清除单选按钮的值。 顺便说一句,我也试过$(this).val(""); 但那不起作

Post comment to YouTube video using JavaScript

So I went to the YouTube API documentation (documentation link) and got the following: POST /feeds/api/videos/VIDEO_ID/comments HTTP/1.1 Host: gdata.youtube.com Content-Type: application/atom+xml Content-Length: CONTENT_LENGTH Authorization: AuthSub token="AUTHORIZATION_TOKEN" GData-Version: 2 X-GData-Key: key=DEVELOPER_KEY And then some sample XML file. Now my

使用JavaScript发布对YouTube视频的评论

所以我去了YouTube API文档(文档链接),得到以下内容: POST /feeds/api/videos/VIDEO_ID/comments HTTP/1.1 Host: gdata.youtube.com Content-Type: application/atom+xml Content-Length: CONTENT_LENGTH Authorization: AuthSub token="AUTHORIZATION_TOKEN" GData-Version: 2 X-GData-Key: key=DEVELOPER_KEY 然后是一些示例XML文件。 现在我的问题是我该如何做到这一点? 我有开发人

Convert an entire String into an Integer in JavaScript

I recently ran into a piece of code very much like this one: var nHours = parseInt(txtHours); if( isNaN(nHours)) // Do something else // Do something else with the value The developer who wrote this code was under the impression that nHours would either be an integer that exactly matched txtHours or NaN . There are several things wrong with this assumption. First, the developer left of the

在JavaScript中将整个字符串转换为整数

我最近碰到了一段非常类似于这样的代码: var nHours = parseInt(txtHours); if( isNaN(nHours)) // Do something else // Do something else with the value 编写此代码的开发人员的印象是, nHours可能是完全匹配txtHours或NaN的整数。 这个假设有几个错误。 首先,开发者离开了基数参数,这意味着输入"09"将导致值为0而不是9 。 这个问题可以通过像下面这样添加基数来解决: var nHours = parseInt(txtHours

Is CDATA really necessary?

I use inline Javascript quite a bit, usually in WordPress themes that I make. I had not heard of wrapping inline Javascript in //<![CDATA[ ... //]]> up until a few months ago, and I have been doing this stuff at a fair level of competency for a few years. I googled around and I hear that people use this because their Javascript doesn't validate otherwise. I use a strict 1.0 xHTML do

CDATA真的有必要吗?

我使用内嵌Javascript,通常在我制作的WordPress主题中。 直到几个月前,我还没有听说在//<![CDATA[ ... //]]>中包装内联Javascript,并且我已经在几年内以相当的能力做了这些事情。 我搜索了一下,我听到人们使用这个,因为他们的Javascript不验证,否则。 我使用严格的1.0 xHTML文档类型,并且从未遇到验证我的标记的问题。 是因为我使用jquery,还是因为通常我只有几行代码来激活插件? 或者在这方面,W3验证员是

Drag and Drop polyfill?

I'm looking for a tool that will allow me to utilize native HTML5 drag-n-drop, as well as fill in support for past browsers. Does such a thing exist? Modernizr's page (https://github.com/Modernizr/Modernizr/wiki/HTML5-Cross-browser-Polyfills) lists nothing. What older browsers do you want to support?? http://caniuse.com/#feat=dragndrop Says you got support everywhere except Opera, b

拖放polyfill?

我正在寻找一种工具,可以让我使用原生HTML5拖放功能,并且可以为过去的浏览器提供支持。 这样的事情存在吗? Modernizr的页面(https://github.com/Modernizr/Modernizr/wiki/HTML5-Cross-browser-Polyfills)没有列出任何内容。 你想支持哪些旧版浏览器? http://caniuse.com/#feat=dragndrop说除了Opera,bro,你得到了支持。 Modernizr现在有Tim Ruffles的Drag drop垫片; Bernardo Castilho有一个polyfill,可以将

415 (Unsupported Media type) when trying to post formData to Spring

I want to post pdf files to spring, using formData. Javascript Code: var formData=new FormData(); formData.append("file",file); $http({ method: 'POST', accept: 'multipart/form-data', url: '/upload', contentType: 'multipart/form-data', data: formData }).then(function successCallback(response) { console.log(response); }, function errorCallback(response) { conso

415(不支持的媒体类型)尝试将formData发布到Spring时

我想使用formData将pdf文件发布到spring。 Javascript代码: var formData=new FormData(); formData.append("file",file); $http({ method: 'POST', accept: 'multipart/form-data', url: '/upload', contentType: 'multipart/form-data', data: formData }).then(function successCallback(response) { console.log(response); }, function errorCallback(response) { console.log(respo

Clearing <input type='file' /> using jQuery

Is it possible to clear an <input type='file' /> control value with jQuery? I've tried the following: $('#control').attr({ value: '' }); But it's not working. Easy: you wrap a <form> around the element, call reset on the form, then remove the form using unwrap(). Unlike the clone() solutions otherwise in this thread, you end up with the same element at the end (

使用jQuery清除<input type ='file'/>

是否有可能通过jQuery清除<input type='file' />控制值? 我试过以下内容: $('#control').attr({ value: '' }); 但它不起作用。 简单:在元素周围包装<form> ,在窗体上调用reset,然后使用unwrap()删除窗体。 与此线程中的clone()解决方案不同的是,最终会得到相同的元素(包括设置的自定义属性)。 经过测试并在Opera,Firefox,Safari,Chrome和IE6 +上工作。 也适用于其他类型的表单元素