JavaScript

The data type of JavaScript is divided into six types, null,undefined,boolean,string,number,object respectively. object is a reference type, and the other five are of the base type or the original type. We can use the TypeOf method to print out

The effect diagram looks like this: Nonsense not much said, directly to everyone paste JS code. table switch 1 2 3 4 5 The above code is to share the JavaScript, tab switch full version (automatic switching, mouse

First, Introduction 1. What is JavaScript JavaScript is a web scripting language developed by Netscape (Netscape) based on client-side browsers, object-oriented (based on) objects, and event-driven. 2. Why use JavaScript Form validationWeb

This article introduces the pure JavaScript implementation message hint effect is a notie.js plug-in implementation can be made alert box, confirmation box and with input message box, shared for everyone to reference, the specific content as follows

Function A function is an event-driven or reusable block of code that executes when it is invoked. function One (leve, leve) { //code return leve+leve } Comments: Formal parameters need not be added to the type; The return

Hello, friends, today, we go on to the previous content, we have already talked about the conditional branch, today we talk about the cycle, as the name implies, repeat the same operation, the normal cycle is controlled, abnormal situation, there

This article analyzes the JavaScript input date is more than equal to the current date validation code, share for everyone to refer to, specific as follows: I hope this article will help you with JavaScript programming.

In fact, the main reason for JS support function closure is because JS requires a function to save data. The saved data here is a function. The value of the variable within the function is also saved after the run is completed. As for why JS needs

Here's a description of how JavaScript removechild () deletes a node, as shown in the following detail: In JavaScript, only one way to delete a node is provided: RemoveChild (). The RemoveChild () method deletes a child node of the parent node.

The "DOM3-level event" prescribes several categories of events UI event, division when the user interacts with the element on the page;Focus event, Element gain or loss of focus;Mouse events, through the mouse on the page to perform

Recently have time to understand the next HTML5 of the API, found that Sina Weibo's avatar set is the use of canvas to achieve screenshots, coupled with the previous period of time to understand the next HTML5 file API FileReader implementation

The example of this article introduces the 6 kinds of ways that JavaScript can inherit, and share them for everyone's reference, the specific contents are as follows 1, the essence of the implementation of "prototype chain inheritance" is to

This article explains the JavaScript implementation of the random display of star effects of the detailed code, the specific contents are as follows (1) The background of the Web page is black (2) Star random size: min=15,max=80 (3) The

Many advanced programming languages are object-oriented, such as C + +, C #, and Java, and other advanced programming languages, what are the basic requirements of an object-oriented language? Let's Tongsou some knowledge about object-oriented.An

This paper summarizes the common functions of javascript, such as some commonly used JS objects, basic data structure, functional functions, and some common design patterns. Directory: As we all know, JavaScript is a dynamic object-oriented

This time we use settimeout to implement an example of a chronological, sequential printing of numerical values. In fact, in the early days, but also I often make a mistake, or to achieve this ability, it seems that JS more far-fetched, in fact, is

1, make a judgment (if statement)An IF statement is a statement that is used when the appropriate code is executed based on a condition.Grammar: if (condition) {The code executes when the condition is set } Example: Suppose you

This article mainly based on the introduction of JavaScript to the HTML page of several ways to analyze the HTML JavaScript script execution sequence problem 1. About the blocking of JavaScript script execution JavaScript has a blocking feature

This article summarizes its use methods and some of the use of experience, the content is not very advanced, is purely introductory content, see can. But if you have not used this kind of JavaScript engine library, then this article is still worth

Defining arrays Copy Code code as follows: Var Arrymap = {riskid: "", Risktype: ""}; Or Copy Code code as follows: Var Arry =[]; Use: var risk = Arrymap.riskid; Arry.push ({id: "1", Name: "1