JavaScript

S: The For loop here refers to the language of JS oh ... The composition structure of the For loop; The code is as follows Copy Code Why should var i;//be defined in this? See jquery sourceFor (i=0 iThis is the loop

Delete operator Deletes an attribute from the object, or deletes an element from the array. Delete expression The expression parameter is a valid JScript expression, usually a property name or an array element. Description Returns false if the

Method One, tested all IE kernel browsers are available The code is as follows Copy Code JavaScript DocumentCall methodvar test=new pagetoexcel ("Data", 0,255, "test. xls");//table ID, line start, last line color, saved

Ways to define regular expressionsThere are two ways to define a regular expression: the constructor definition and the regular expression direct quantity definition. For example: The code is as follows Copy Code var reg1

HTML code: The code is as follows Copy Code JS Code: The code is as follows Copy Code The effect chart is as follows Example The code is as follows

JavaScript supports recursive invocation of functions. The so-called recursive function is to call the function itself in the function body. A common example of using recursive functions is to find factorial. Use recursive function to ask 6!.

Only the simple data types in 5 are explained here, and the Function and Object are explained in the following chapters. Kind of basic data type Number TypeString String typeBoolean Boolean typeUndefined indicates that a variable has not been

In the electronic business of recharge, payment and other actions; After the user confirms the order, executes the submission action, we call this page "the Order submits the page", the order opens a new page jumps to the payment platform to carry

Second, determine what data type a variable belongs to. 1. Numeric type (number). A numeric expression refers to any expression that has a numeric value. The elements of such an expression can include keywords, variables, literals, and

SetTimeout at execution time, after the specified time, after loading, to execute an expression, execute onceSetTimeout at execution time, it executes an expression at a specified time, after it has been loaded 1, Basic usage:Execute a piece of

The code is as follows Copy Code ^[wu4e00-u9fa5uf900-ufa2d]*$ 1, a regular expression, contains only Chinese characters, numbers, letters, underscores can not be the beginning and end of the underscore: The

The code is as follows Copy Code 1, read the XML file through JS, the main is to judge each browser View Code Load XML documentvar loadxml = function (xmlFile) {var xmldoc;if (window. ActiveXObject) {xmldoc = new ActiveXObject ('

The practice of getting the current year in JS is The code is as follows Copy Code var object = new Date (), Object.getyear () , to get the year, so that there will be browser compatibility issues, in IE can

Definitions and usage The InsertRow () method inserts a new row at the specified position in the table. Grammar Tableobject.insertrow (Index) return value Returns a TableRow that represents the newly inserted row. Description This method

When judging the type of a function, we use the TypeOf method, such as: function fn () { } alert (typeof fn) //The result is "function".   However, the method does not work as we think in some browsers. 1,

Cause a warning box to be triggered when the visitor clicks on the page with the right mouse. In other words, it disables the standard menu when it appears on your site's clicks and people's rights instead of displaying a warning box. Provides

Tip: you can modify some code before running Css menu demonstration Menu level 1 Menu level 1 Menu level 1 Menu level 1 Menu level 1 Menu level 1 Menu level 1 Menu level 2 Menu level 2 Menu level 2

I. Syntax1.1 obtain all cookies on the current page:Var allCookies = document. cookie;AllCookies are a string that contains the cookie list strings separated by semicolons (key = value ).1.2 write a new cookie:Document. cookie =

This is an improvement on the original calendar control, beginning with more in line with Chinese habits. The improved code is shown below. Save it as rl. asp and add it to the file to be called. , the call in the control is as follows, mainly for

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