JavaScript

The instanceof operator in JavaScript is to return a Boolean value that indicates whether an object is an instance of a particular class. How to use:Result = Object Instanceof classWhere result is a required option. Any variable.Object is a

Recently read 3 O ' Reilly's book, we generally called the Animal book (with my classmate's name is very like laughing), then always want to do an practicing to practice, because look at the company a lot of dynamic form, so, I tried to use JS to do

Gradient (gradient) is an important form of beauty law in aesthetics, which corresponds to mutation. Shape, size, position, direction, color and other visual factors can be gradient. In color, hue, lightness, purity can also produce a gradual effect,

Because the Chrome,safari,opara browser does not support automatic "set as Home" & "Add Favorites".  So we can only try, catch a moment, give a wrong hint! It's perfect. In other IE, many people have also encountered it window.external.addFavorite. 

The page is ugly, only to achieve the function. ^ ^ Copy Code code as follows: imitate the effect of Easyui dialog open dialog

A lot of people have the use of JavaScript, but see defer may not know what he is used to do; many people have encountered such problems, need to directly execute and manipulate the DOM object JS is always reported to find the object error, The

Point number "." There are two kinds of semantics in JavaScript Semantics 1, representing the decimal point in arithmetic (floating-point number), such as 2.5 Semantic 2, Object properties, methods, such as [].push (2) There is hardly any

Copy Code code as follows: /* * Map object, realize map function * Interface * Size () Gets the number of map elements * IsEmpty () to determine if the map is empty * Clear () Delete all elements of map * Put (key, value) to add

Using JavaScript for many years, wrote countless functions, today but really understand the difference between the definitions of the two functions, is really a tragedy, write down this essay, to remind themselves to lay a good foundation, a lot of

Delete Row Copy Code code as follows: Cell 1 Cell 2 Cell 3 Add rows Copy Code code as follows:

Copy Code code as follows: var asubmit = document.getElementById ("submit"); Copy Code code as follows: asubmit.setattribute ("onclick", "alert (' Please check mobile number ');" Valid in Firefox, but not valid in IE

08 A company JS interview question, the position is JavaScript engineer (go to Google) The interviewer asked me how to clone an array, when I thought of the next JS object without the Clone method, Java object has. So how do we get a new array? I

First of all, here's a statement about my test browser version is chrome15.0.874.121 Firefox 8.01 IE9 ietester The following code is about declaring 1: Get the scroll bar condition Copy Code code as follows: function Getscroll () { var

In IE provides a fireevent method, as the name implies is to trigger the meaning of an event occurred. At first I thought it would be the same with the usual use of onclick (), did not think of the recent writing JavaScript introductory ppt when

1) Basic ideas: To determine whether two IP addresses in the same network segment, their IP address and subnet mask to do and operation, the result is the network number, if the network number is the same subnet, otherwise, not the same subnet. 2)

Usage one (common usage): The expression is: an object. method. Call (another object), meaning to replace the current object with another object and execute the method of the current object. First look at the example: Copy Code code as

1, using an array join method in a lower version of the browser (such as IE6,IE7, etc.) is much more efficient than using the + number to connect (such as [' AAA ', ' BBB ', ' CCC '].join () more efficiently than ' AAA ' + ' BBB ' + ' CCC '); 2,

Last year there were several projects that needed to use JavaScript mutexes, so there were several similar ones, and this was one of them: Copy Code code as follows: Published by Indream Luo Contact:indreamluo@qq.com Version:chinese 1.

Vertical and horizontal scrolling is currently supported http://lgyweb.com/marScroll/ Now analyze the basic idea of seamless seam implementation (vertical example): HTML structure: Copy Code code as follows: 01 02 03 04

callback function Concept: A callback function is a function called by a function pointer. If you pass the pointer (address) of a function to another function as an argument, when the pointer is used to call the function it points to, we say this is