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Javascript: void (0) is often used in javascript. do you know this is contained? in Javascript, void is an operator that specifies to calculate an expression but does not return a value, this article introduces the

Javascript: void (0) is often used in javascript. Do you know this is contained? In Javascript, void is an operator that specifies to calculate an expression but does not return a value, this article introduces the

The void operator explains that JavaScript scripts often see the following code: But what does void (0) mean? In JavaScript, void is an operator that specifies to calculate an expression but does not return a value. The forma

You can often see this in JavaScript scripts. Code: But what does void (0) mean? In JavaScript, void is an operator that specifies to calculate an expression but does not return a value. The format of the void operator is as

Use document.doc umentElement to specify doctype. During page creation, a fixed-position layer may be used to read document. body. scrollTop to set the layer position, as shown in the following figure: Window. onscroll = function (){ Var oFix = document. getElementById ("pfix "); OFix. style. top = document.

onload () and window.onload and $ (document) in body. the difference between ready (): 1, the first two indicate when the page loaded elements (including pictures and other information) performed after the operation, and both in various browsers are compatible, and $ (document). Ready () represents a method in JQuery and thus only supports JQuery is only ap

]. usernames. length) returns the length of the array. In the preceding example, the returned value is 3.Therefore, when using js for full selection, consider one or more check boxes with the same name. The Code is as follows: Function allSelect (){Var form = document. forms [0];Var state = form. allselectbox. checked;Var length = form. usernames. length; // When there are two or more check boxes whose na

Difference between document. forms [0] And getElementByName in JavaScript, getelementbyid First, let's look at an example: Copy codeThe Code is as follows: When document. forms [0] has one or more form forms in the HTML page, a NodeList form array is returned.Document. forms

use the window.What else can we do? Pass all the things! Let's go through the Document object:(function (window, document) { //}) (window, document);What about undefined it?In ECMAScript 3, undefined is mutable.This means that its value can be reassigned, such as Undefined = true;Oh my! Fortunately, in ECMAScript 5

specify a hyperlink. The expression is calculated, but no content is loaded in the current document. The code above creates a hyperlink, and nothing will happen after the user clicks. When a user clicks a link, void (0) is calculated as 0, but it has no effect on JavaScript.Click here and nothing will happenThat is to

Javascript: What does void (0) mean and the difference between href = # And href = javascriptvoid (0, In Javascript, void is an operator that specifies to calculate an expression but does not return a value. The format of the

= "Text/javascript"src= ' Jquery-1.9.1.js '>Script> styletype= "Text/css">Html,body, Div, DL, DT, DD, UL, OL, Li, H1, H2, H3, H4, H5, H6, pre, Code, form, fieldset, legend, Input, button, TextArea, p, blockquote, TH, TD{margin:0;padding:0; }#absolute{position:Absolute;Margin-left:300px;Height:500px;width:500px;ba

This code is often visible in JavaScript scripts: 〈a href= "Javascript:changenum (); void (0);" 〉here〈/a〉 But what does void (0) mean here? In JavaScript, Void is an operator that s

direct use of javascript: void (0) by Link (href) in IE may cause some problems, such as: causes the GIF animation to stop playing. Therefore, the safest way is to use "####". To prevent the link from jump to the top, The onclick event return false. 3. You can use The Code is as follows: Click Me! Void is a

. The format of the void operator is as follows: 1. javascript: void (expression_r_r) 2. javascript: void expression_r_r Expression_r_r is a standard JavaScript expression to be calculated. Parentheses outside the expression ar

solutions:1: 2: 3: 4: 5: -------------------------------------------------------------------------------Use JavaScript with caution: void (0) When debugging CGI today, it is clear that the CGI program has been executed and the final result is correct, but the page is not refreshed. The test results in FireFox2.0 are normal, but IE6 is not refreshed! After carefu

The javascript: void (0) label is displayed in many website A labels. We know that clicking is not going to jump to the link, and there is no response, which is usually followed by javascript: void (0) is followed by a js event. L

refreshed! After careful investigation, we found that the CGI page is linked to The format of the void operator is as follows: 1. javascript: void (expression_r_r) 2. javascript: void expression_r_r Expression_r_r is a standard JavaScri