Please consider the official ECMAScript specification as the source for your answer, and not a document published by a specific browser vendor. (I am aware of Mozilla extending its JavaScript implementation with "function statements".) So, according to the ECMAScript spec, ergo, the syntactic productions defined in it, is this valid? if (foo) { function x() { return; } } Update
请考虑官方ECMAScript规范作为您的答案的来源,而不是特定浏览器供应商发布的文档。 (我知道Mozilla使用“函数语句”来扩展它的JavaScript实现。) 因此,根据ECMAScript规范,ergo,其中定义的语法生成是否有效? if (foo) { function x() { return; } } 更新:我的问题也可以这样表述:Statement生产包含FunctionDeclaration生产吗? 结论:答案是否定的。 我不同意其他答案,认为它是有效的。 根据ECMA-262第5
I've recently started maintaining someone else's JavaScript code. I'm fixing bugs, adding features and also trying to tidy up the code and make it more consistent. The previous developer uses two ways of declaring functions and I can't work out if there is a reason behind it or not. The two ways are: var functionOne = function() { // Some code }; function functionTwo() {
我最近开始维护别人的JavaScript代码。 我正在修复错误,增加功能,并试图整理代码并使其更加一致。 前面的开发人员使用两种声明函数的方法,如果有或没有原因,我无法解决。 两种方法是: var functionOne = function() { // Some code }; function functionTwo() { // Some code } 使用这两种不同方法的原因是什么?每种方法的优缺点是什么? 有一种方法可以用另一种方法完成吗? 所不同的是, functionOne
I'm looking for suggestions for a problem I'm having right now. I want to be able to change programatically the values of a box-shadow ie: box-shadow: h-shadow v-shadow blur spread color inset; . And my issue is worst, I need it to be at least 2 properties together. Example output of chrome: box-shadow: rgb(0, 0, 0) 0px 5px 10px, rgb(255, 255, 255) 0px 4px 10px inset; So my issue
我正在寻找我现在遇到的问题的建议。 我希望能够通过编程方式改变box-shadow的值,即: box-shadow: h-shadow v-shadow blur spread color inset; 。 而我的问题是最糟糕的,我需要它至少有两个属性在一起。 chrome的示例输出: box-shadow: rgb(0, 0, 0) 0px 5px 10px, rgb(255, 255, 255) 0px 4px 10px inset; 所以我的问题是 我怎样才能首先分开这两种风格,只是.split(",")不会因为它创建一个数组而导致
Hello I have table like this <table> <tbody> <tr> <th>PROVINSI</th> <th>KABKOT</th> <th>KECAMATAN</th> <th>DESA</th> </tr> <tr> <td>KALIMANTAN TENGAH</td> <td>SERUYAN</td> <td>SERUYAN HILIR</td> <td>TANJUNG RANGAS&l
你好,我有这样的桌子 <table> <tbody> <tr> <th>PROVINSI</th> <th>KABKOT</th> <th>KECAMATAN</th> <th>DESA</th> </tr> <tr> <td>KALIMANTAN TENGAH</td> <td>SERUYAN</td> <td>SERUYAN HILIR</td> <td>TANJUNG RANGAS</td>
System specs: Mac OS X 10.9 Node v0.10.22 I get the following error when trying to install bcrypt. Any advice on how to fix this issue? Any help would be greatly appreciated. > bcrypt@0.7.6 install /Users/eDawg/Desktop/eggstage/node_modules/bcrypt > node-gyp rebuild CXX(target) Release/obj.target/bcrypt_lib/src/blowfish.o ../src/blowfish.cc:47:10: fatal error: 'sys/types.h' file no
系统规格:Mac OS X 10.9节点v0.10.22 尝试安装bcrypt时出现以下错误。 有关如何解决此问题的任何建议? 任何帮助将不胜感激。 > bcrypt@0.7.6 install /Users/eDawg/Desktop/eggstage/node_modules/bcrypt > node-gyp rebuild CXX(target) Release/obj.target/bcrypt_lib/src/blowfish.o ../src/blowfish.cc:47:10: fatal error: 'sys/types.h' file not found #include <sys/types.h> ^ 1 error
I've been working with active record and data mapper implementations of ORM enough to know the problems with using active record implemented ORM in my large projects. Right now I'm thinking to migrate one of my projects to node.js and trying to find the similar tools Im using right now. After research I didn't found any node.js ORM that follows data mapper pattern. They all are act
我一直在使用ORM的活动记录和数据映射器实现,足以了解在我的大型项目中使用活动记录实现的ORM时遇到的问题。 现在我正在考虑将我的一个项目迁移到node.js,并试图找到现在正在使用的类似工具。 经过研究,我没有发现任何遵循数据映射器模式的node.js ORM。 他们都是积极的记录。 也许我错过了一些东西,你可以告诉我有没有遵循活动记录模式的node.js的流行ORM? 我看过的图书馆: http://docs.sequelizejs.com/ https
I have problems with the scroll on iOS, using overflow: hidden in coupled with webkit-overflow-scrolling: touch; The div does not flow, but if I try to delete webkit-overflow-scrolling: touch; returns to scrorre but not smoothly. The problem is if I set my webapp like Add to Home. This is the class that I use for the container div: .content { position: fixed; top: 0; right: 0; bottom: 0; le
我在iOS上的滚动有问题,使用溢出:隐藏在与webkit溢出滚动:touch; div不流动,但如果我尝试删除webkit-overflow-scrolling:touch; 返回scrorre但不顺利。 问题是如果我将我的webapp设置为“添加到主页”。 这是我用于容器div的类: .content { position: fixed; top: 0; right: 0; bottom: 0; left: 0; overflow: auto; background-color: #ecf0f1; -webkit-overflow-scrolling: touch; 虽然这为身体标签 body { height:
I'm building a simple web game with mouse and touch support. Based on the accepted answer to JavaScript mapping touch events to mouse events I copy-pasted their code (with a couple of modifications). I'm mapping the first touch the user makes to a left-click event, and the second they make (with the first touch held down) to a right-click event. Like so: function touchHandler(event){
我正在用鼠标和触摸支持构建一个简单的网页游戏。 根据JavaScript映射触摸事件到鼠标事件的接受答案,我复制粘贴了他们的代码(进行了一些修改)。 我将用户进行的第一次触摸映射到左键单击事件,并将他们制作的第二次触摸(按住第一次触摸)映射到右键单击事件。 像这样: function touchHandler(event){ var touches = event.changedTouches; var first = touches[0]; var type = ""; switch(event.type){ case
I am currently using overflow:scroll on a web page optimized for the iPad, and it works great. I began running into trouble with touch events on the items in the scrolling div, because it was interpreting the scrolling swipes as touches. Since there is no scroll complete event, and the scroll event fires each time you scroll, I tried detecting the scroll event and setting a timer to disable the
我目前正在使用溢出:在为iPad优化的网页上滚动,并且效果很好。 我开始在滚动div中的项目上碰触事件,因为它将滚动滑动解释为触摸。 由于没有滚动完成事件,并且每次滚动时都会触发滚动事件,所以我尝试检测滚动事件并设置一个定时器以临时禁用触摸事件。 但是,我发现滚动事件只会在用户每次启动滚动时触发,这很少用惯性滚动。 是否存在不断滚动的滚动事件或其他方式来检测滚动正在发生? 这只是Mobile Safari上惯性滚
Lets say I have a box/table with multiple rows..These rows are draggable. Now I have a JS where I have implemented event handlers for touchstart,touchmove, touchend for the iPad....Basically they just map these events to corresponding mouse events like mouseover, mousedown, mouseup, etc Now here is my issue; While I am able to drag any of the rows from the table, I also want to be able to s
可以说我有一个包含多行的框/表。这些行是可拖动的。 现在我有一个JS,我已经为touchstart,touchmove,touchend实现了iPad的事件处理程序....基本上,他们只是将这些事件映射到相应的鼠标事件,如mouseover,mousedown,mouseup等 这是我的问题; 虽然我可以从表中拖动任何行,但我也希望能够滚动它。 当我按下屏幕上的任何手指并向下拖动时,它会为该行执行拖动操作(因为我使用touch.motion.preventDefault()来防止默