JavaScript

During Web development, we may encounter the following situation: we need to reference another j through a js file. During Web development, you may encounter this situation: we need to reference functions in another js file through one js file,

In Web development, JavaScript and algorithms are also important. Below I have sorted out some common In Web development, JavaScript and algorithms are also important. The following describes the implementation of some common algorithms in

Basically, all JS data types have the valueOf and toString methods, nul Basically, all JS data types have the valueOf and toString methods, except null. They solve the javascript value calculation and display problems.ValueOf () method of JavaScript

Sometimes it may be too long to display a text segment, affecting the Display Effect of our page. If only English is used Sometimes it may be too long to display a text segment, affecting the Display Effect of our page. If it is only English, we can

Javascript uses the contentWindow attribute to operate the dom in iframe. conte In IE6 and IE7, we can use document.frames?id=.doc ument to access the document object in the iframe subwindow. However, this is not in line with W3C standards and is

The following are four short JavaScript scripts. If you can successfully predict the running results of the script There are four short JavaScript scripts below. If you can successfully predict the running results of the script, your basic

JavaScript is a dynamic language based on objects and is event-driven. Using object-oriented thinking JavaScript is a dynamic language based on objects and is event-driven. From the perspective of Object-oriented thinking, it also has the concept of

When both sides of "&" or "|" are determined, they are converted to boolean type for judgment. However, during the test, they are converted to boolean type. Use two non-operations (!) : !!5 ==> true Use a Boolean constructor: new Boolean(5) == >

A problem occurs today. When the website is opened under IE6, the message "InternetExplorer does not exist" is displayed. Today, I encountered a problem. When the website is opened under IE 6, the following message is displayed: Internet Explorer

The return Statement exits from the current function and returns a value from that function. Use the return statement to terminate The return Statement exits from the current function and returns a value from that function. Syntax: Return [()

When talking about the drag-and-drop function, all the large, medium, and small websites now have similar things, especially the drag-and-drop operations on the pop-up layer. Speaking of the drag-and-drop function, there are similar items in all

Using a shorter statement can not only reduce the number of characters entered, but also reduce the file size. Most adopt simple and simplified code Using a shorter statement can not only reduce the number of characters entered, but also reduce the

Use DocumentFragment to optimize multiple appends. When multiple dom elements are added, use DocumentFragment to optimize multiple appends. When multiple dom elements are added, append the elements to DocumentFragment and add DocumentFragment to the

Prototype literal translation is a prototype and is the main tool for inheriting javascript implementations. Prototype literal translation is a prototype and the main means for javascript to implement inheritance. Roughly speaking, prototype is a

In JavaScript1.6, several useful methods are added to the javascript array. In JavaScript 1.6, several useful methods are added to the javascript array: indexOf, lastIndexOf, every, filter, forEach, map, and some. The first two methods can be

Using Cookies we already know that there is a cookie attribute in the document Object. Using Cookies we already know that there is a cookie attribute in the document Object. But what is Cookie? "Some websites store some information on your hard disk

Traditionally, string connection has always been one of the operations with the lowest performance in js. Early browsers did not optimize this operation Traditionally, string connection has always been one of the operations with the lowest

I read a lot of code on the Internet that uses JavaScript code to insert text at the cursor. Many of them are useless. It's just a waste of time. Most I read a lot of code on the Internet that uses JavaScript code to insert text at the cursor. Many

Function () {}, which is a valid grouping of tokens during lexical analysis. Function The braces "{}" in Javascript have four meanings: Semantics 1. Organize compound statements, which are the most common: if( condition ) { //...}else {

Cookie is a variable stored on the visitor's computer. Each time a computer requests a page through a browser Today, I reviewed how javascript is used to create and store cookies. I would like to share some of my experiences with you. First, let's