google-closure-library

问题 I am resizing an image in JavaScript based on the current viewport size. No media queries and other such things, JS all the way, and no static sizes for elements. So basically it looks something like this: var computedHeight = viewport.height * someRatio; var image = goog.dom.createDom('img', { 'src': 'the.link.to.the.image', 'height': computedHeight + 'px', 'width': 'auto' }; 回答1: As the others said, you can't get the size before the image has been inserted into the document. But you can

问题 I am resizing an image in JavaScript based on the current viewport size. No media queries and other such things, JS all the way, and no static sizes for elements. So basically it looks something like this: var computedHeight = viewport.height * someRatio; var image = goog.dom.createDom('img', { 'src': 'the.link.to.the.image', 'height': computedHeight + 'px', 'width': 'auto' }; 回答1: As the others said, you can't get the size before the image has been inserted into the document. But you can

问题 I am resizing an image in JavaScript based on the current viewport size. No media queries and other such things, JS all the way, and no static sizes for elements. So basically it looks something like this: var computedHeight = viewport.height * someRatio; var image = goog.dom.createDom('img', { 'src': 'the.link.to.the.image', 'height': computedHeight + 'px', 'width': 'auto' }; 回答1: As the others said, you can't get the size before the image has been inserted into the document. But you can

问题 Are there any reliable techniques for storing prototype-based libraries/frameworks in mongoDB's system.js? I came across this issue when trying to use dateJS formats within a map-reduce. JIRA #SERVER-770 explains that objects' closures - including their prototypes - are lost when serialized to the system.js collection, and that this is the expected behavior. Unfortunately, this excludes a lot of great frameworks such as dojo, Google Closure, and jQuery. Is there a way to somehow convert or

问题 Per Closure documentation: Extends an object with another object. This operates 'in-place'; it does not create a new Object. Example: var o = {}; goog.object.extend(o, {a: 0, b: 1}); o; // {a: 0, b: 1} goog.object.extend(o, {b: 2, c: 3}); o; // {a: 0, b: 2, c: 3} But this is not a functional approach and for many contexts a functional approach is better. Does Closure offer something more modern for this? e.g. goog.object.extend(a, b); becomes a = goog.object.extend(a, b); 回答1: You can create

问题 An example is here: * An implementation of {@code goog.events.Listenable} with full W3C * EventTarget-like support (capture/bubble mechanism, https://developer.pubref.org/static/apidoc/global/closure/goog/events/EventTarget.html I can guess what it means but where can I find its exact definition? I checked all the Google Closure Annotation docs but couldn't find. Thanks :) 回答1: Updated Per my new understanding; Since JSDocs supports markdown. {@code FooBar} is therefore deprecated in favor of

问题 I have been confused for a long time regarding the following code snippet: /** * Pair of width and height. * @param {string} width * @param {string} height * @constructor * @struct */ var Pair = function(width, height) { /** @type {string} */ this.key = key; /** @type {string} */ this.value = value; }; vs /** * @typedef {{width: string, height: string}} */ var Pair; Basically I need to create a new type and highly confused about which one to use when? 回答1: which one to use when? This is to

问题 In this snippet of Google Closure javascript code involving a constructor, why is goog.base(this); necessary? Doesn't Foo already inherit from Disposable with goog.inherits(foo, goog.Disposable); ? goog.provide('Foo'); /** * @constructor * @extends {goog.Disposable} */ Foo = function() { goog.base(this); } goog.inherits(foo, goog.Disposable); foo.prototype.doSomething = function(){ ... } foo.prototype.disposeInternal = function(){ ... } 回答1: goog.inherits(childConstructor, parentConstructor)

问题 We are starting to create an application using JavaScript and HTML5 which will use rest API to access server resources taking the advantage of jQuery awesomeness and easiness which our dev team is already comfortable with. This application is going to be made multilingual. We had decided later that we will write our DOM using JavaScript which will allow us the flexibility to use our UI bits for integration with our other applications and will create our own widgets using jQuery UI widgets.

问题 I am trying to annotate my javascript so that closure doesnt rename all the symbols since i am working with vanilla javascript as well. /** * @constructor * @expose * @type{foo} */ foo = function (el, args) { "use strict"; var s = "Hello World"; /* * @expose * @this {foo} * @type {function} */ this.introduce = function () { return s; }; }; However the generated output when i run it through the closure compiler with advanced optimization is foo = function() { this.a = function() { return"Hello