JavaScript

Reprint: http://www.cnblogs.com/qixuejia/archive/2009/12/18/1626951.htmlThe scope of JS is divided by functions, not blocks.Example1 vararg = "arg";2 3 if(true) {//This is the definition in the block, and this is the global variable4 vararg =

In the original: JavaScript that must be knownJavaScript is the front-end prerequisite, and this one of the essence is too much, recently in the review of some things are relatively easy to ignore, here record, on the one hand is to hope that they

JavaScript is the front-end prerequisite, and this one of the essence is too much, recently in the review of some things are relatively easy to ignore, here record, on the one hand is to hope that they can be handy in peacetime application, on the

Firefox:addeventlistener () methodIe:attachevent () methodAdds an event listener to an HTML element, rather than assigning a value directly to an element's event attributes (such as: OnClick, onmouseover).To add an event listener for an HTML element:

The eval global Function Dojo Loader will see one of the following functionsvar Eval_ = new Function (' Return eval (arguments[0); ');    function functions run at the top-level scope, but run more efficiently, but using this method does not pollute

In the work, if we want to put the link in the a tag into an empty link, we generally use two methods: 1 "#"target="_blank"> Or 1 "javascript:void(0);"target="_blank"> The above two

1, Backbonejs: The JavaScript code to do MVC management, so as not to produce glue (glue) code, is on the basis of underscore to expand. Learning methods: Do an example to deepen your study.Need to understand Model,collection,views's respective

The next thing you don't know about Javascript is a straight line: Each function is created by default with a prototype property, which contains a constructor property, and a hidden property __proto__ that points to the object. The value of

How to use JS to make the text in HTML not selectable? The first way to think about this is to use a CSS selector, as follows:-webkit-touch-callout:none;-webkit-user-select:none;-khtml-user-select:none;-moz-user-select:none;-

There is a JavaScript face question. f = function () {return true ;}; g = function () {return false function () { if (g () && [] = =! = function () {return false ;}; function g () {return true ;} }});

How do you write JavaScript to make it taller? How can you organize JavaScript to make it easier for others to see you at a glance? Do you expect others to read your code and say, "Can you write like this?" Here are some of the loading techniques

An event represents the state of an incident, such as the element that triggered the object, the position and state of the mouse, the key pressed, and so on.The event object is only valid during the events.Some properties of an event are only

function of JavaScript • For ext developers, I still hope that you will be able to understand and even skillfully use javascript native things. The function, then, is undoubtedly a very important concept. First of all, we know that a function is

Convert string to Numeric General Method:var var1 = parseint ("2"), var var2 = parsefloat ("2"), var var3 = number ("2"), var var3 = new Number ("2");Simple method:var var1 = + ("2"); Converting other types to Boolean types In

Analysis on three simple and classic tabs created by DIV + CSS, divcss The Application tab in a webpage makes the webpage more compact. Combined with AJAX technology, the webpage can display more content in a limited space. This article mainly

Html text using javascript is not optional How can I use JavaScript to make the text in html not optional? The first method is to use the css selector as follows: -webkit-touch-callout: none;-webkit-user-select: none;-khtml-user-select:

Basic Introduction to JavaScript 1. js is a web-based scripting language. What is the scripting language? (1) scripting languages cannot be used independently. They are used in combination with HTML/jsp/php/asp.net. (2) The scripting language also

Null and undefined in js Null is a keyword in js, indicating a null value. Null can be considered as a special value of the object type. If the value of an object is null, it indicates that this object is not a valid object. Here, null and 0 are

Drawing the sin curve using Javascript, javascriptsin The Javascript code for drawing the sin curve is as follows: Dynamic Effect: How to use JavaScript to draw dynamic curves I use canvas html5 to figure this out. I use it to

Implement form Element value write-back Based on JQuery Form. jsp: Form write-back Name:Region:--- Select ---FuzhouXiamenNingdeGender:MaleFemaleInterest:AABBCCDDEEFFNote: Jquery. form_util.js: /** Form Element writeback tool * wumingkun 2014-08-