When you override backbone sync, both model/collection .save()/fetch() uses the same backbone sync method, so what is the best way to check if what Backbone.sync recieves is a model or a collection of models? As an example: Backbone.sync = function(method, model, options){ //Model here can be both a collection or a single model so if(model.isModel()) // there is no isModel or isCollection m
当您覆盖骨干同步时，model / collection .save（）/ fetch（）使用相同的骨干同步方法，那么检查Backbone.sync接收的是模型还是一组模型的最佳方法是什么？ 举个例子： Backbone.sync = function(method, model, options){ //Model here can be both a collection or a single model so if(model.isModel()) // there is no isModel or isCollection method } 我想我正在寻找一种“安全”的最佳实践，我当然可以检查某些模
I'm trying to get source maps to work for my CoffeeScript in Chrome. I can see that coffee is generating the source maps properly, and in fact Chrome's dev tools shows that the source map file is fetched successfully from my local HTTP server. However, the .coffee file itself isn't being fetched, even though I am able to GET it manually in the browser. I suspect this might have s
我试图让我的CoffeeScript在Chrome中使用源地图。 我可以看到coffee正在生成源映射，事实上Chrome的开发工具显示源映射文件是从本地HTTP服务器成功获取的。 然而，即使我能够在浏览器中手动GET它， .coffee文件本身也不会被获取。 我怀疑这可能与目录结构有关。 我为其提供HTTP的目录（使用简单的python服务器）如下所示： ./ index.html ("includes" 'lib/coffeedrag.js) src/ coffeedrag.coffee lib/ co
Within Google Chrome, I was wondering if stack traces will, in the future, provide mapping support. Currently, using source maps, throwing an error will provide the line number link to my TypeScript files, however... When calling the Error.stack, it gives me the JavaScript lines and files. Here's a reference picture: http://puu.sh/4DTOG.png As you'll notice, the actual line the error
在谷歌浏览器中，我想知道堆栈跟踪将来是否会提供映射支持。 目前，使用源映射，抛出一个错误将为我的TypeScript文件提供行号链接，但是...当调用Error.stack时，它会给我JavaScript行和文件。 以下是参考图片：http：//puu.sh/4DTOG.png 您会注意到，错误所在的实际行与TypeScript文件相关联，但堆栈跟踪链接到JavaScript文件。 没有固有的技术限制。 但我不认为这是计划。 由于类似的原因，当堆栈跟踪包含的代码不是T
I'm trying to make it so that once the dropdown option is selected, it'll be removed from the menu, and then once another one is selected the previous removed option will get returned to the menu. Is there a way to do this using jQuery? I'm new to jQuery and JavaScript, so I'm not too sure what I'm doing, and all my poking around has only further broken code. Thanks! For
我试图做到这一点，一旦选择了下拉选项，它将从菜单中移除，然后一旦选择了另一个，先前移除的选项将返回到菜单。 有没有办法使用jQuery来做到这一点？ 我是jQuery和JavaScript的新手，所以我不太确定自己在做什么，而我所有的探索只会进一步破坏代码。 谢谢！ 作为参考，这是我的HTML看起来像： <div class="FlightList"> <select id="departureFlightsControl">
I've created a simple demo of a light-test-thing here: http://jsfiddle.net/CGr9d/ When I record the memory usage using the Chrome dev tools I get this: http://cl.ly/LSDl, it basically go up until a certain point and then go down again and start over until it reaches the previous high point again. is this normal/OK? Is there any way to optimize my code to make it less memory intensive?
我在这里创建了一个简单的轻型测试的演示：http://jsfiddle.net/CGr9d/ 当我使用Chrome开发工具记录内存使用情况时，我得到这个：http://cl.ly/LSDl，它基本上一直持续到某个点，然后再次下降并重新开始，直到它再次达到前一个高点。 这是正常的吗？ 有没有什么办法可以优化我的代码以减少内存密集？ 这是我的鼠标移动功能： $('body').mousemove(function(e) { //2000 is half the image width/height, of course used
I'm using node v0.12.7 and want to stream directly from a database to the client (for file download). However, I am noticing a large memory footprint (and possible memory leak) when using streams. With express, I create an endpoint that simply pipes a readable stream to the response as follows: app.post('/query/stream', function(req, res) { res.setHeader('Content-Type', 'application/oc
我正在使用节点v0.12.7并希望直接从数据库流到客户端（用于文件下载）。 但是，当使用流时，我注意到了大量内存占用（可能会发生内存泄漏）。 使用express，我创建了一个端点，只需将可读流传递给响应，如下所示： app.post('/query/stream', function(req, res) { res.setHeader('Content-Type', 'application/octet-stream'); res.setHeader('Content-Disposition', 'attachment; filename="blah.txt"'); //...retr
I'd like to convert a float to a whole number in JavaScript. Actually, I'd like to know how to do BOTH of the standard conversions: by truncating and by rounding. And efficiently, not via converting to a string and parsing. var intvalue = Math.floor( floatvalue ); var intvalue = Math.ceil( floatvalue ); var intvalue = Math.round( floatvalue ); // `Math.trunc` was added in ECMAScript
我想在JavaScript中将float转换为整数。 其实，我想知道如何做标准转换：截断和四舍五入。 有效地，不通过转换为字符串和解析。 var intvalue = Math.floor( floatvalue ); var intvalue = Math.ceil( floatvalue ); var intvalue = Math.round( floatvalue ); // `Math.trunc` was added in ECMAScript 6 var intvalue = Math.trunc( floatvalue ); 数学对象引用 例子 正 value = 5.5 Math.floor(value) // 5 Math.
I want to convert HTML (containing JavaScript ) to a PDF. How can I do that? I just want to show what is being shown in web page. I am displaying a gantt chart that is generated by a JavaScript library. Now I want to save that HTML web page as a PDF, how to do that? We are also looking for some way to convert html files with complex javascript to pdf. The javasript in our files contains
我想将HTML（包含JavaScript）转换为PDF。 我怎样才能做到这一点？ 我只想显示网页中显示的内容。 我正在显示由JavaScript库生成的甘特图。 现在我想将该HTML网页保存为PDF，该怎么做？ 我们也在寻找一些方法来将HTML文件转换为复杂的JavaScript格式。 我们文件中的javasript包含document.write和DOM操作。 我们尝试使用HtmlUnit的组合来解析文件和飞碟来渲染为PDF格式，但结果并不令人满意。 它的工作原理，但在我
I am building a simple mobile javascript application, with Backbone.js and Forge. What I'm trying to do is have a Suggestion model and a Category collection of those models, and create one suggestion and have that render out in the view using an underscore template. But that suggestion is not rendering out. Here's the main.js file: (function ($) { forge.enableDebug(); var Sug
我正在用Backbone.js和Forge构建一个简单的移动JavaScript应用程序。 我想要做的是有一个建议模型和这些模型的类别集合，并创建一个建议，并使用下划线模板在视图中渲染。 但是这个建议并没有被渲染出来。 这里是main.js文件： (function ($) { forge.enableDebug(); var Suggestion = Backbone.Model.extend({ urlRoot: function () { if (this.isNew()){ return "/suggestio
I have a backbone.js application with multiple models, views, collections and templates (in a script tag with type text/template with an ID which the views use to load the template in using _.template($(id).html())). Currently, all of the above are in a single file, which makes it quite ugly. This is an offline application (ie, its loaded from the local filesystem and talks to a web server whi
我有一个包含多个模型，视图，集合和模板的backbone.js应用程序（在带有ID的文本/模板的脚本标记中，视图用于使用_.template（$（id）.html（ ）））。 目前，所有上述内容都在一个文件中，这使得它非常难看。 这是一个离线应用程序（即，它从本地文件系统加载并与允许交叉源请求的Web服务器通信）。 我一直在试图弄清楚如何将视图，模型和模板移动到单独的文件中，我试着将视图和模型移出到views.js和models.js，但视图依赖