JavaScript

1. Check whether selectedIf (objselect. selectedindex>-1 ){// Indicates the selected} Else {// The description is not selected.} 2. dynamically create select Function createselect (){ VaR myselect = Document. createelement ("select ");Myselect.

Generally, is placed between and . This ensures that your Javascript is executed when your webpage is downloaded to the client.CodeIt has also been downloaded to the client. This is also a good place to place your JavaScript Functions. If you want

Screenx: coordinates of the mouse on the screen. Clientx: coordinates of the area displayed by the mouse on the page. Note: The above two are common to all browsers. Pagex: FF is unique. The cursor position on the page is located from the upper

   /**//* * Get all nodes's attribute and text */ Function getat (nodes )...{ VaR xmldata = []; For (VAR I = 0; I VaR crtnode = ...{}; Crtnode. $ name = nodes [I]. nodename; If (nodes [I]. attributes )...{ For (var j = 0; j Debug. innerhtml + = '' +

This change always refers to the browser window at the highest level of the split window. If you plan to execute the command from the highest level of the split window, you can use the top variable. Parent: This variable refers to the parent window

Recently, I am developing jsapi for ARCserver. in order to isolate the interface, I have access to some client debugging tools. 1 chrome 2 Opera 3 IE8 4 Firefox   17:46:27     1 chrome   Chrome was the first to come into use, because Google often

Location. pathname: Return the part of the URL after the domain name (Domain Name IP. For example, http://www.example.com/wordpress/ /wordpress /,Or http: // 127.0.0.1/index.html,Note: The domain name or domain name IP address with a URL Create an

There are countless popular JavaScript libraries, such as jquery, mootools, prototype, dojo, and Yui. These JavaScript libraries are rich in functionality, and their plug-ins are almost competent for any job. However, there is a price. These

Basic knowledge1. Strictly speaking, in JS, only objects without class2. Objects can have unique attributes and methods. That is, the attributes and methods of an object are supersets of classes.3. ecmascript can recognize two types of objects.A

1. How to access the C # function in JavaScript? 2. How to access the C # variable in JavaScript? 3. How to access existing JavaScript variables in C? 4. How to access JavaScript Functions in C?   　　Question 1: execute functions in C # code in

The main object of the access control is the document object. Corresponds to all (sub-objects) personal views of the current document. Several methods are provided to access objects.The main object of the access control is the document object.

Document directory Compilation process Execution Process Summary Start with a simple question: The output result isundefinedThis phenomenon is called "pre-resolution": the JavaScript engine will first parse the VaR variables and function

operating system 04 . letft { font-size: 12px; background-color: # CCC; margin: 10px; Height: auto; width: 50px; border: 1px inset #999; float: left; } --> var memory = 128 // the size of the primary storage is in the unit of K.

Window. Open is a new window, and location. href is the new URL refreshed in this window.Location. href/equipmentweb/ If you obtain the "current" Domain NameHost = Window. Location. Host;   Url = Document. domain;   Url = Window. Location.

Javascript is a scripting language that is indispensable for creating web pages. With JavaScript, the content of a Web page is lively and vigorous. But maybe you haven't found and applied some of its more advanced features yet? For example, reading,

If you want to associate a specified window, you can use the target attribute of the tag. A browser window does not have a name unless you allocate it. When you use the target attribute to open a new window through a link, you will assign it a

Reference for basic JavaScript attributes Document. Body. scrolltop returns and sets the coordinate value of the current vertical scroll bar, which must be used with the function,Document. Body. scrollleft returns and sets the coordinate values of

Discussion on the scope of variables in callback functions (excellent) 1. BackgroundThe callback function in Javascript is familiar to everyone. The most obvious example is the callback function provided during Ajax requests,In fact, the event

Javascript full-width to half-width Function fullchar2halfchar (STR) { This. style. display = 'none'; document. getelementbyid ('_ 42_476_open_text '). style. display = 'none'; document. getelementbyid ('_ 42_476_closed_image '). style. display =