JavaScript

JavaScript is a weakly typed language, declaring a variable without declaring its type, and Var x can be equal to any type of value. Like what: var str = "string ..."; var arr = [' This ', ' is ', ' array ']; var obj = {name: "Caizhongqi",

Directory: 1: Pseudo Object2: Converting to String3: Digital Spin string4: Convert to Number5: Convert to BooleanThe difference between 6:number () and parseint ()The difference between 7:string () and ToString () 1: Pseudo Object Pseudo object:

The first thing to do is to have JavaScript basics before you can read this article. (1) JS calls the Android method: Copy Code code as follows: WebView Wview; Wview. Addjavascriptinterface (Object obj, String InterfaceName); is

When we want to achieve rich graphics and text mixing effect, we usually use WebView, this is a very powerful control, to see the official explanation: Copy Code code as follows: A View that displays Web pages. This class is the

Error Object Property: Name: Wrong name Number: Error Description: Description Message: Error messages, multiple description FF only Property FileName: The file where the error occurred Stack: Call stack when an error occurs Constructor: Error ()

Did you know that JavaScript is actually a functional programming language? This guide will teach you how to use the functional features of JavaScript. Requirements: You should have a basic understanding of JavaScript and DOM. The purpose of

Recently, there is a need to export the data to Word, and then edit the print.Thought about several scenarios:1. Use Jacob.2. Use Apache poi.3. Use Itext.Because time is tight, there is not much time to study the above toolkit, now use JavaScript to

Prototypes and closures are the most common in JavaScript, the most difficult to understand, the most easily as the problem of the two parts, of course, and their extension, such as the scope chain, inheritance, and so on, I recently also a variety

Objective We often encounter the problem of date and time in the front-end JavaScript development, and usually get a lot of processing functions to complete a simple date and time display effect. In order to improve the speed of the development of

Front. The parameters of a JavaScript function differ from those of the functions in most other languages. The function does not mind passing in the number of arguments, nor does it care what data type the incoming parameter is, or even the

Copy Code code as follows: /** * Get Chinese and English characters * @param {} str * @return {} */ function LENGTHB (str) { var p1 = new RegExp ('%u ... ', ' g ') var P2 = new RegExp ('%. ', ' G ') return Escape (str). replace (P1, ').

Front. Most of the time, the main reason for our confusion about the scope is that it is not clear whether the variable should be found in the nesting order of the function, or in the order in which the function is called. Plus the interference of

Split definition and usage The split () method is used to split a string into an array of strings. Grammar Stringobject.split (separator, howmany) parameter description Separator required. A string or regular expression that splits the Stringobject

1. What is a cookie? A: Cookies are used to store session information on the client. part of the 2.cookie?① Name: A name that uniquely determines the cookie. It is recommended that the case be case-sensitive. The name of the cookie must be URL-coded.

Registering events in the oldest JavaScript browser can only be done in inline mode. Since DHTML fundamentally changed the way you manipulate pages, the registration of events must be extensible and adaptable. Therefore, there must be a

No event, no script. Take a look at any Web page with JavaScript code: Almost every example has an event that triggers the script. The reason is very simple. JavaScript is adding internal activity to your page: the user does something and then the

1. JQuery Tablesorter http://tablesorter.com/docs/ 2. Table sorting with Prototype http://tetlaw.id.au/view/blog/table-sorting-with-prototype/ 3. sorttable http://www.kryogenix.org/code/browser/sorttable/ 4. Table Sorting Javascript

Copy Code code as follows: function ForEach (object, block, context, FN) { if (object = = null) return; if (!FN) { if (typeof object = = "function" && object.call) { Traverse Normal Objects fn = Function; else if (typeof Object.foreach =

Usually, the default value of the Parameter object is given in the function, at which time it is necessary to overwrite the parameters passed into the default parameters by extend, such as: Code: Copy Code code as follows:

After some design, finally completed this function. After the introduction of this JS, you can configure the format string to output various custom date formats. Flow chart As you can see, a format string is actually a string containing a specific