JavaScript

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String. prototype. replaceall = function (S1, S2) { return this. replace (New Regexp (S1, "GM"), S2); // G Global } string. prototype. replaceall2excep = function (S1, S2) { var temp = This; while (temp. indexof (S1 )! =-1) { temp = temp. replace (

I. The main content of learning Javascript is: 1. Positioning and searching of HTML + JS Elements 2. Expand and close the tree menu 3. Implement layer hiding, display, pop-up layer and other special effects 4. Floating ads, pop-up ad window

At first, I tried to use a loop in each method. Later I found that the loop was deleted. The options index and set change, and the deletion fails. Sometimes the selected is empty, and two cycles are over. addmulitoptions.html

Today, I encountered a strange problem when writing jquery. I wrote some Code on the page. It runs successfully in Firefox and continues to write ...... after I finish writing the code, it can still run in Firefox without errors or

This was accidentally seen on the internet, breaking the original idea, so I will post it again,     function stringbuffer () { This. _ STRs = new array; } stringbuffer. prototype. append = function (STR) { This. _ STRs. push (STR); };

Why do we need to merge the attributes of two components? When developing components, users PASS Parameters in the form of JSON objects. You are going to open 10 parameters, but the user may only pass 5. YourCodeIf you access the remaining five

  random, non-repeated _ www.jb51.net foot home Detailed source reference: http://www.jb51.net/article/15747.htm

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Analysis Javascript has only one numeric typeNumberAnd all numbers in JavaScript are represented in IEEE-754 standard format. The precision of floating point numbers is not unique to Javascript, because some decimals represent infinite digits in

Differences between JS functions in IE (Trident) Firefox (gekco): A small experience! Some differences between Firefox and IE browser in Web development JavaScript's Object-oriented Thinking JavaScript's IE and FirefoxInternet Explorer is replaced

Reserved JavaScript words The following reserved words cannot be used as variables, function names, object names, etc. Some of them are used for future JavaScript extension.

During the development process, we always want to call the background method directly at the front-end. The reason is that we want to control page refresh and improve the user experience. There are many ways to achieve this purpose: Ajax should be

A very useful JavaScript cookie Reading and Writing Function function getcookieval (offset) // obtain the decoded cookie value { var endstr = documents. cookie. indexof (";", offset); If (endstr =-1) endstr = documents. cookie. Length; return

Compatible with Firefox, ie, and select option JS that can be moved up, down, top, and bottom. principle: top: this mainly refers to switching the option of the selected index and the text and value of the option above the selected index; moving

The javascript password-like function replaces user input information with dots. Then you can get the string you entered. Of course there are other operations that need to be processed. Here we will not process them one by one. Here is the general

String. prototype. trim = function () { return this. replace (/^/S +/g ,""). replace (// s + $/g, ""); } function jscookie () { This. getcookie = function (key) { var cookie = document. cookie; var cookiearray = cookie. split (';'); var getvalue =

The BS brother knows about Js. We will have to deal with JS when we engage in BS. Not necessarily. JS is not enough. In some cases, JavaScript is inseparable. In form forms, decimals are sometimes reserved. The exact number of decimal places. The

Javascript is the browser object model. Window and Dom Document Object Model programming is based on objects rather than object-oriented languages. It is a weak internal language and a scripting language for dynamic web page interaction, it is a

// ============== Verification function start var isie = false; var isff = false; var Issa = false; If (navigator. useragent. indexof ("MSIE")> 0) & (parseint (navigator. appversion) >=4) { isie = true; } If (navigator. useragent. indexof