JavaScript

JavaScript gets the current value of select to be worded:var value = document.getElementById ("select"). Options[document.getelementbyid ("select"). Options.selectedindex]. Valuevar text = document.getElementById ("select").

Screen the right key to the page or Add background music to a Web pageIe:ns:*.MID MIDI format file for your background music Automatically open and close windows here is the connection Let the browser fail while saving the page so that the

Today wrote a small hint of the success of the page, at the same time required to return to the previous page, and implementation of the previous page of the operation to refresh (such as deleted, added), the search on the internet, basically 90% is

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You can turn the input method off in the page input control by setting Ime-mode Want to close IME: Want to use the current input method: When a text field does not require Chinese input, we can reduce the likelihood of errors by setting the

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This is the LGZX company's interview question, asks the JS string to add a method, removes the white space character (including Space, tab, page break, etc.) on both sides of the string. Copy Code code as follows:

JavaScript can modify the parameters passed in the function, as follows Copy Code code as follows: function Func1 (name) { name = ' Lily '; alert (name); } Func1 (' Jack ');/output Lily Look at one more example

The effect is not difficult, the point is the position and scale settings, Capture mouse position, determine mouse position area, and onmouseover events, onmousemove events, onmouseout events Set the scale to show the larger picture, the Chettu

Copy Code code as follows: Debugging samples Copy Code code as follows: Insert title here

1. Original value and reference value The original value is stored in the stack, and the reference value is stored in the heap. such as program: Copy Code code as follows: function Person (id,name,age) { This.id = ID; THIS.name =

There are many ways to define functions in JavaScript, and the direct amount of the function is one of them. such as var fun = function () {}, where function does not assign value to fun then it is an anonymous function. OK, let's see how anonymous

1. The scope chain of JavaScript functions is defined as the scope chain and the run-time scope chain; 2. When the function is defined, it has an attribute [[scope]] that identifies its defined scope chain, and defines the scope chain [[scope]] to

Sometimes we jump to a page to finish the task, and then go back to the original page, which is seen in many download sites, to keep users. This JavaScript-timed function is easy to implement. Time set by Window.settimeout (code,time)//Code

When doing web development, we often use the page shutdown Event onbeforeunload, can give the user a choice to give up the opportunity to shut down, such as the blog editor. If the user chooses to leave, then the OnUnload event will naturally

In the JS ReadOnly property is strange, directly create an object, assign the object ReadOnly property can not be used in HTML as the following way: Copy Code code as follows: var x=document.createelement ("input"); X.type= "Text";

Call: Copy Code code as follows: var pagechange = function (index) { var html = pager ("divID", index, 5, 1000, Pagechange, {showgoto:false, showfirst:false}); } Realize: Copy Code code as follows: Pager =

Copy Code code as follows: Global object's parseint () method

Copy Code code as follows: Ordering of Arrays

Copy Code code as follows: get the maximum value of the array