javascript widgets examples

This article mainly introduces JavaScript using HTML5 Window.postmessage to implement Cross-domain communication examples, you need friends can refer to the following JavaScript has been a thorny issue because of the limitations of homology policies. Of course, the solution also has a lot of:nbsp; 1.document.domain+iframe settings, applied to the primary domain

Before you mention the above concepts, first of all, let's talk about the implied parameters of functions in javascript: arguments Arguments The object represents the function being executed and the arguments of the function that called it. [function.] Arguments[n] Parameter function: option. The name of the Function object that is currently executing. N: Options. The 0-based parameter value index to pass to the Function object. Description Argume

The examples in this article describe Ajax usage in JavaScript. Share to everyone for your reference. The specific analysis is as follows: To obtain XMLHttpRequest objects in a compatible way: var xhr = null; if (window. XMLHttpRequest) {//non ie browser xhr = window. XMLHttpRequest; } else if (window. ActiveXObject) {//ie browser try{ //high version, supported by msxml3.dll+ XHR = new

The examples in this article describe the common methods of string in JavaScript. Share to everyone for your reference. as follows: /Length property: Gets the number of characters in the string. var s= ' Love Like a gust of wind '; alert (s.length); CharAt (Index) method: Gets the character at the specified index position, starting at 0 var s1= ' I don't want to think of you '; Alert (S1.charat

Recently contacted some examples of JavaScript development, here to share with you: Example: When we a team in the writing JS file, you write the JS code yourself can understand can also be maintained, but others want to your JS to expand, if all in the same JS file written, that may be very messy, resulting in maintenance is extremely inconvenient, then we can through the JS Modular development 1. If this

This article mainly introduces the JavaScript sorting algorithm merging sort (merge sort) 2 examples, the need friend may refer to under Merge sort is an efficient sorting algorithm based on merging operations. The algorithm is a very typical application of the partition method (Divide and Conquer). The nbsp; merge (merge) method combines two (or more) ordered tables into a new ordered table, that is, to

matches a character only when it is not followed by a specific character. When performing operations such as forward-looking and negative-looking, the regular expression engine pays attention to the part after the string, but does not move the index//forward-looking re =/([a-z]+ (? =\d))/I; We're going to match the word followed by a number, and then return the word without returning the number str ="ABC every1 ABC"; Alert (Re.test (str));//true alert (regexp.$1);//every alert (Re.lastindex);/

/*** Undefined==null Returns True* undefined = = = NULL returns FALSE* Undefined indicates that the variable is defined but not assigned* NULL indicates a reference to an empty object*/function typeExt.onready (function () {function Fun () {Console.info ("info ... ");}Fun (); Represents the Call function funFun means referencing the name of the function aboveAlert (typeof fun); This is to judge the type of the fun function by referring to the fun function name above, which is the same as the obj

Using the typeof operator on a value may return one of the following strings:"Undefined"--if this value is not defined"Boolean"--if this value is a Boolean value"String"--if this value is a string"Number"--if this is a numeric value"Object"--if this is an object or null"Function"--if this value is a function The return values of the commonly used typeof operators include number, String, Boolean, Undefined, object, and function. Such as: Copy Code code as follows: var n; Console

random numbers: The first guy, regardless of whether the random number seeds generated, or the time increment of the long integer, they are all constructed of the number constructor [ Object number], and in Ecma.js, this method of number is this: JavaScript /**@param {Number} [radix]@return {string}*/Number.prototype.tostring=function (radix) {};As a good man, I'll show you the way, MDN documentsDid you think of the second parameter of the parsein