javascript-framework

问题 The intention is to build a wrapper to provide a consistent method of calling native functions with variable arity on various script hosts - so that the script could be executed in a browser as well as in the Windows Script Host or other script engines. I am aware of 3 methods of which each one has its own drawbacks. eval() method: function wrapper () { var str = ''; for (var i=0; i<arguments.lenght; i++) str += (str ?', ':'') + ',arguments['+i+']'; return eval('[native_function] ('+str+')');

问题 I am an absolute beginner with Angular 2 and I have the following dount related the correct syntax of the ngStyle directive. I have this example (that works fine): <p [ngStyle]="{backgroundColor: getColor()}">Server with ID {{ serverID }} is {{ getServerStatus() }}</p> I know that, in this case, the ngStyle directive is adding something like to: style="background-color: green;" at my HTML paragraph. My doubt is related the correct meaning of this syntax. Why is it: [ngStyle]="{backgroundColor

问题 Is there any way of using prototype to coexist with Jquery. What i mean is not Jquery with prototype with the Jquery NoConflict tag but the other way around. I have to override prototypes utility methods to coexist with other libraries? I have no control over the Jquery Scripts 回答1: When jQuery is included, it takes a copy of whatever is defined as $ and stores a reference to it. When you use jQuery.noConflict it restores that reference, and returns jQuery which allows you to "rename" jQuery.

问题 I would like to know what are some downsides using too much JavaScript code in a web page? For example, I will use a jQuery framework for my dropdown menus, tabs and accordion. And other JavaScripts for my calendar (even-though there is available calendar that uses jQuery) and other JavaScript for other stuff? What is the effect? (My opinion is conflicting of JavaScript and heavy to load) I know a lot of developers that masters more than 2 JavaScript frameworks. My question is: When

问题 Using jQuery Mobile, I have seen how it adds to the existing DOM when links are clicked and a related page is served. Then, when ready, it switches to that new data-role="page" . But when I do a "view source" in the browser (Google Chrome or Mozilla Firefox), I see the original page, as delivered, without the additional things loaded later (DOM injections). How can I see what the browser really has (post-render HTML)? If it happens to be a JavaScript solution, please don't presume I know

问题 I'm new to VueJS, so I've been following their official guide. I'm able to trigger the first 5 properties validator, but I can't seem to be able to trigger the last example (custom validation function). my JS file: Vue.component('propValidation', { props: { // basic type check (`null` means accept any type) propA: Number, // multiple possible types propB: String, // a required string propC: { type: String, required: true }, // a number with default value propD: { type: Number, default: 100 },

问题 How do hosted services like UserVoice embed their content on other web sites? I see that it is via including a JavaScript file from the service provider on your own page, however, what I'm interested in are the building blocks for creating a service like that. For example, do they use a library like jQuery, mooTools, or prototypejs and how do they avoid namespace clashes? Also wondered if there were any books, articles, blog posts that go over this specific use of JavaScript (not looking for

问题 I want to synchronize web site like when page load first it will load content then images then flash content then another content. Like i have seen the same at http://gmailblog.blogspot.com/ [ see how images load ] Is there any way to achieve? Any link or source code would be appreciated. 回答1: I seen the web site. This is the same thing that happens with bing. How to do this ? In the core HTML code give the <img src="loading.gif" id="1"/> or whatever element you want. When the Core HTML is

问题 How I can radio button checked using index.. Below is my asp.net C# code for radion button list... <asp:RadioButtonList runat="server" ID="rdlCategory" CssClass="clsradio" AppendDataBoundItems="true" RepeatDirection="Horizontal" RepeatLayout="Flow" > </asp:RadioButtonList> and Bind it using C# dynamically.. and Html looks like <span class="clsradio" id="ctl00_cphTop_rdlCategory"><input type="radio" value="8" name="ctl00$cphTop$rdlCategory" id="ctl00_cphTop_rdlCategory_0"> <label for="ctl00

问题 I have an enterprise app that imports some java script library (let's say A) with some functions in global namespace. Our customers can extend our platform and import jquery and that will result in namespace collision. What is best way for me to help customers not to hit namespace conflict since jquery is quite popular and every customer will be using it. How can I change namespace of library A ? What is the most convenient and safest way to do that. 回答1: For jQuery, the easiest thing is to