JavaScript

1. As a function call, refers to the global objectIf we define the following functions:function f () {Console.log (this);}It is then invoked as a normal object, that is, f (), at which point this refers to the Global object window.2. A method call

1, onbeforeunload Event:Description: Currently the three major browsers Firefox and IE support the onbeforeunload event, Opera has not yet supported.Usage:Object.onbeforeunload = HandlerDescribe:When the event is triggered, a confirmation and

Labjs is a small JavaScript tool used to load JavaScript files as needed, by using the tool to enhance the performance of the page, to avoid loading JavaScript files that are not needed, and to implement dynamic parallel loading of script files. and

parseURL function This function creates a new anchor element and uses locationProperties (inherent) to get the desired URL data. Some StringOperations are used (to normalize results across).function parseURL (URL) {var a = document.createelement ('

Below is I find on the internet a relatively simple marquee and JS to solve the picture of seamless scrolling method, including up, down, left and right four directions scrolling, below to introduce you; Let's take a look at several properties of

Usually our writing cycle is roughly like this: The code is as follows Copy Code function () {The way of writing general circulationfor (var i=0; i...}} Optimization variable Declaration The above writing in

The code is as follows Copy Code /*** Floating ads, compatible with IE* Usage: Advertising 1 * * Finishing: 13:12 July 4, 2013 Thursday*/function Addevent (obj,evttype,func,cap) {cap=cap| | Falseif (Obj.addeventlistener)

Get URL parameters: The code is as follows Copy Code function Geturlparam (name) {var value = Location.search.match (New RegExp ("[?]" + name + "= ([^&]*) ([O.)", "I"));return value? decodeURIComponent (Value[1]): value;}

The code is as follows Copy Code JS Code1. Determine if there is a value= "Paravalue" Item in the Select optionfunction Jsselectisexititem (Objselect, Objitemvalue) {var isexit = false;for (var i = 0; I if

Escape solve filter URL transfer value problem, when using Ajax to pass the value, encountered special symbol filtering problem, special symbol test xml/html Code 01. Special Symbol Test HA: ~!@#$&%^* () <> how are you? Because there is a & symbol

Because the kernel of the Maxthon3 dual-core browser has been modified by their team, it can be judged as follows. (Note: Only tests were done under mathon3+.) If you find a problem, or have a better way, please let me know, thank you.

Principle: Get the page source (document.referrer) when the page is loaded, analyze the search engine keyword, then get all the elements on the page, recursive query contains search keywords, if so, create a SPAN element, and apply the keyword

To print the contents of an array:Code:-------------------------------------------------------------------------------- The code is as follows Copy Code function Printelt (element, index, array) {Document.writeln ("[" +

String.prototype.len=function () {return This.replace ([^x00-xff]/g, "AA"). Length;} (2) Application: JavasCript does not have a trim function like VBScript, we can use this expression to implement String.prototype.trim = function () { Return

Objective I believe we all know that because JavaScript is a weak type of language, project writing will be very difficult to control, easy to all kinds of problems. Fortunately there is a strong type of typescript can make up for this defect, but

Tip: you can modify some code before running Tip: you can modify some code before running

Tip: you can modify some code before running Similar to Tencent Weibo Come on, let's talk about what you're doing and what you're thinking. You can also enter140Characters

Tip: you can modify some code before running Circular scrolling of images in a controllable direction与之间-->与之间--> Tip: you can modify some code before running

Policy mode refers to the algorithm that defines some columns and encapsulates them one by one to separate the use of algorithms from the implementation of algorithms.Js code that implements the effect of the above example using the strategy mode:1.