This question already has an answer here: How do I detect a click outside an element? 76 answers Probably the simplest way is to bind click event to body and see if it comes from the element (e.target) which has parent (walk up the tree with closest method) .modal : $(document).click(function(e) { if (!$(e.target).closest('.modal').length) { alert('click outside!'); } }); D
这个问题在这里已经有了答案： 如何检测元素外的点击？ 76个答案 可能最简单的方法是将click事件绑定到body，并查看它是否来自具有父级的元素（e.target）（使用closest方法向上走树） .modal ： $(document).click(function(e) { if (!$(e.target).closest('.modal').length) { alert('click outside!'); } }); 演示：http://jsfiddle.net/c89Ls0av/4/ 顺便说一下，使用outline制作叠加层是一个有趣的
I'm developing simple browser real-time multiplayer (2 players in a gameplay atm) game. It involves fast and frequent player moves and changes of direction, so informations must be exchanged very quickly - I decided to try websockets (would be happy to use pubnub service instead of self-hosting socket server). My problem is, pubnub always decides to use xhr fallback instead of websockets -
我正在开发简单的浏览器实时多人游戏（玩家atm游戏中的两名玩家）。 它涉及快速和频繁的玩家移动和方向改变，因此必须非常快速地交换信息 - 我决定尝试使用websockets（很乐意使用pubnub服务而不是自托管套接字服务器）。 我的问题是，pubnub总是决定使用xhr fallback而不是websockets - 不知道为什么。 通过websockets运行通信是否有任何必须满足的具体要求？ Http显然太慢并且会导致失败。 我在Mac上使用最新的Chrome浏
Functions in javascript is also an object and can have properties. So is there any way to access its properties from inside its own function body? like this var f = function() { console.log(/*some way to access f.a*/); }; f.a = 'Test'; f(); //should log 'Test' to console arguments.callee是函数本身，不受函数名称的影响。 var f = function() { console.log(arguments.callee.a); }; f.a = 'Tes
javascript中的函数也是一个对象，可以有属性。 那么是否有任何方法可以从它自己的函数体内部访问它的属性？ 喜欢这个 var f = function() { console.log(/*some way to access f.a*/); }; f.a = 'Test'; f(); //should log 'Test' to console arguments.callee是函数本身，不受函数名称的影响。 var f = function() { console.log(arguments.callee.a); }; f.a = 'Test'; f(); 你可以使用这个： console.log(f.a);
This question already has an answer here: JavaScript closure inside loops – simple practical example 36 answers How do JavaScript closures work? 88 answers
这个问题在这里已经有了答案： 循环中的JavaScript闭包 - 简单的实际例子36个答案 JavaScript关闭如何工作？ 88个答案
This question already has an answer here: How do JavaScript closures work? 88 answers context is local to Fetch . request is declared inside of Fetch , therefore context is available inside request
这个问题在这里已经有了答案： JavaScript关闭如何工作？ 88个答案 context对于Fetch是本地的。 request在Fetch内部声明，因此context在request可用
Possible Duplicate: How do JavaScript closures work? Javascript closures and side effects in plain English? (separately) I'm new to JavaScript but I'm really confused by how closures work. Can someone explain in layman's terms what they are or why they are useful? Closures are something like the context of a function when it is defined. Whenever a function is defined, the c
可能重复： JavaScript关闭如何工作？ 简单的英语JavaScript封闭和副作用？ （分别） 我是JavaScript的新手，但我真的很关心闭包的工作方式。 有人可以用外行的话来解释他们是什么或为什么他们有用吗？ 闭包在定义时就像一个函数的上下文。 每当一个函数被定义时，上下文就会被存储，并且即使函数的“正常”生命周期结束了，如果你保持对函数执行时定义的元素的引用，它仍然可以访问上下文的元素闭包），这实际上是你的
This question already has an answer here: How do JavaScript closures work? 88 answers JavaScript closure inside loops – simple practical example 36 answers Javascript has function scope. This means that for(...) { var j = i; } is equivalent to var j; for(...) { j = i; } In fact, this is how Javascript compilers will actually treat this code. And, of course, this causes your l
这个问题在这里已经有了答案： JavaScript关闭如何工作？ 88个答案 循环中的JavaScript闭包 - 简单的实际例子36个答案 Javascript有功能范围。 这意味着 for(...) { var j = i; } 相当于 var j; for(...) { j = i; } 事实上，这是JavaScript编译器如何处理这些代码。 当然，这会导致你的小技巧失败，因为在setTimeout的函数被调用之前， j将会增加，即j现在不会做任何与i不同的任何事情，它只是一个具有相
I am trying to use fullscreen api. API works correctly all other browsers, but unfortunately ie11 doesn't response. I am using this code which has copied from here: var element = $doc.documentElement; var requestMethod = element.requestFullScreen || element.webkitRequestFullScreen || element.mozRequestFullScreen || element.msRequestFullscreen; if (requestMethod) { // Native full
我正在尝试使用全屏API。 API可以正常工作所有其他浏览器，但不幸的是ie11不响应。 我正在使用从此复制的代码： var element = $doc.documentElement; var requestMethod = element.requestFullScreen || element.webkitRequestFullScreen || element.mozRequestFullScreen || element.msRequestFullscreen; if (requestMethod) { // Native full screen. console.log(requestMethod); requestMetho
I am trying to use the R implementation of dygraphs The example provided is library(dygraphs) dygraph(presidents, main = "Presidential Approval") %>% dyAxis("y", valueRange = c(0, 100)) %>% dyAnnotation("1950-7-1", text = "A", tooltip = "Korea") %>% dyAnnotation("1965-1-1", text = "B", tooltip = "Vietnam") which results in the chart Hovering over the 'A' produces a toolti
我正在尝试使用dygraphs的R实现 提供的例子是 library(dygraphs) dygraph(presidents, main = "Presidential Approval") %>% dyAxis("y", valueRange = c(0, 100)) %>% dyAnnotation("1950-7-1", text = "A", tooltip = "Korea") %>% dyAnnotation("1965-1-1", text = "B", tooltip = "Vietnam") 这导致了图表 悬停在'A'上会产生一个提示'韩国' 我非常希望为每个点提供一个工具提示，最好完
This question already has an answer here: Insert an image in chrome extension 1 answer The easiest way to play some sound/music using Javascript is by using an Audio object: you just need to have the file you want to play inside your extension folder, and you can play it like this: var myAudio = new Audio(); // create the audio object myAudio.src = "path/to/file.mp3"; // assign the au
这个问题在这里已经有了答案： 用chrome扩展名1答案插入图片 使用Javascript播放一些声音/音乐最简单的方法是使用Audio对象：您只需要在扩展文件夹中放置要播放的文件，然后就可以像这样播放它： var myAudio = new Audio(); // create the audio object myAudio.src = "path/to/file.mp3"; // assign the audio file to its src myAudio.play(); // play the music 您可以使用play()并使用pause