JavaScript

Sometimes, when writing JavaScript to Your webpage, you need to decide whether to use the existing available JavaScript library or write allCode. Each of them has its own advantages and disadvantages, so no method is absolutely correct for everyone.

The ABS method returns the absolute value of a number. The ACOs method returns the arc cosine of a number. The anchor method adds an HTML anchor with the name attribute at both ends of the specified text of the object. The asin method returns the

Nested functions (scope chain) When nesting a function, you must note that the scope chain actually changes, which may not seem intuitive. You can Code Changes in the monitoring value of firebug. Copy code The Code is as follows: var testvar =

Inspired by the use of # To maintain the Page Status in ajax, this javascript + xml SharpRewriter is written to implement url redirection in a pure html environment. Source code download: http://files.cnblogs.com/cncxz/SharpRewriter1.0.rar Test

How to read a cookie string: Copy codeThe Code is as follows: alert(document.cookie); The cookie string of a website contains all the cookies under the website domain name (javascript accessible, excluding httponly cookies). Multiple cookies are

Use new Object () to create an Object There are several methods for creating objects in javascript. Different methods can be used in different scenarios. The simplest is to use the new operator, for example: Copy codeThe Code is as follows: In this

Project Practice from the javascript language itselfDulao5 2005-1-15 With the rise of ajax, javascript has gained more and more attention. Importantly, ajax has brought about changes in the web software architecture to some extent. More and more

Scope is one of the most important concepts of JavaScript. To learn JavaScript well, you need to understand the working principles of JavaScript scopes and scope chains. This article briefly introduces the JavaScript scope and scope chain, hoping to

Yesterday shared the http://jscompress.sinaapp.com/this small tool, found that you are still very fond. So today, I converted it into json. I used json to transmit data and opened APIs. All functional implementations of this tool are handled by

Js Code Copy codeThe Code is as follows: [Code] In normal calculation, except for the first line (because it cannot be used apart), the rest should get accurate results, from the pop-up results, we found that it was not the correct result we

JavaScript uses "Object-Oriented Programming" or "Object-Oriented Programming. The so-called "Object-Oriented Programming" refers to dividing the scope of JavaScript into large and small objects. objects are still divided into objects until they are

JavaScript allows you to create and open windows that represent HTML text, form objects, and frames. the window object is the top-level object of the JavaScript client hierarchy. The form element and all JavaScript code exist in the document, and

Notes for sorting arrays (sort) in js Check the code and paste the test results.   Var arrDemo = new Array (); arrDemo [0] = 10; arrDemo [1] = 50; arrDemo [2] = 51; arrDemo [3] = 100; arrDemo. sort (); // After the sort method is called, the

When browsing the Web page, we may have noticed this problem: when we click a link, the browser will take us to another new page. If we want to return, we usually click the back button on the browser, but we want to open the new page, then we can

Nowadays, there are more and more browser types, such as IE, Firefox, Chrome, Safari, etc. So it is not a small function to copy the content of a js file to the clipboard. Nowadays, there are more and more types of browsers, such as IE, Firefox,

Javascript: Javascript & nbsp; two important techniques for operating form fields. Javascript tutorial description: Tip 1: Confirm with the client when the form is submitted or reset Tip 2: Lists All elements in a form field and their important

The website is vulnerable to JavaScript injection whenever you accept and re-Display user input. Let's look at a specific application that is vulnerable to JavaScript injection attacks. Assume that a customer feedback website has been created.

The Jquery api provides a method to apply the disabled and readonly attributes to elements, which is recorded here. As follows: The Jquery api provides a method to apply the disabled and readonly attributes to elements, which is recorded here. As

Recently, we need to use Form Verification for user registration information, and then I checked some information. I will share with you some of the frequently used JS form verification functions that I hope will be useful to you. Recently, we need

JavaScript: js Code note (judge the length of textbox and fix the maximum number of characters), Javascript tutorial Untitled Document