Considering the error in JS can be more than the server side of the code generated more errors, and also difficult to find and modify, so the JS code must have exception handling as well as a global deal.
The operation of the program will
Google Browser is a company developed by Google's browser. Google Browser is based on the other open source software written. The following small series for everyone to share a Google browser debugging JavaScript tutorial, hope to help everyone.
This article mainly introduces the JavaScript in the POW () method of using the detailed, is the basic knowledge of JS learning, need friends can refer to the
The method returns the exponent power of the base, that is, baseexponent.
Grammar
?
The first thing to say is the implied parameters of a function in javascript: arguments
Arguments
The object represents the function being executed and the arguments of the function that called it.
[function.] Arguments[n]
Parameter function:
The checksum is all made up of numbers
Copy Code code as follows:
function IsDigit (s)
{
var patrn=/^[0-9]{1,20}$/;
if (!patrn.exec (s)) return false
return True
}
Verify Login Name: Can only enter 5-20 letters
1, Mario (game address: http://jsmario.com.ar/) Legendary Mario Web version, 1:1 to achieve the red and white machine era Super Mario all functions and checkpoints, the level of precision is not inferior to the original game.Dependent libraries:
Mainstream browsers default to the HTML elements provided by the scroll bar is not beautiful, and the front-end developers want to their CSS through the unified style of beautification is also not achievable. For example, IE can be achieved by the
The following is a description of how JavaScript can debug suggestions and techniques, please see below for details.
Browser developer Tools
I personally like the Chrome developer tool. While Safari and Firefox are not up to the standards of
to create the syntax for a Boolean object: New Boolean (value); //constructor & nbsp; Boolean (value); //conversion function parameter value The value held by a Boolean object or the value to convert to a Boolean value.
The scope is one of the most important concepts of JavaScript, and to learn JavaScript well you need to understand how JavaScript scopes and scope chains work. Today's article provides a simple introduction to JavaScript scope and scope chain,
This is a very cool HTML5 3D book page animation, the effect is relatively simple, drag and drop the mouse simulation hand-page, more beautiful is the process of turning the page, showing a realistic 3D stereo effect. The text and pictures in the
You know, directly using replace ("old", "new") will only replace the first encountered "old", then if you want to replace all? JavaScript itself does not seem to provide a way to replace it, and there is actually. As long as this writing can be
Article Introduction: sets the background color according to the options.
"JavaScript daily Practice"-set background color based on options
Select color and click the button "Set background color".
Type conversionsJavaScript is a weakly typed language, so the coercion type conversion is applied whenever possible.The following comparison results are: trueNew Number (10) = = 10; The string returned by Number.tostring () is converted to a number
Following IE instead of Internet Explorer, MF replaces Mozzila Firefox
1. Document.form.item question(1) Existing problems:There are many Document.formName.item ("itemname") statements in existing code that cannot be run under MF(2) Solution:Switch
Array
JavaScript is inefficient in the cycle of large-capacity arrays, I've done a comparison, compared to the VBS array, the VBS's array cycle speed is roughly one order of magnitude faster than JS (http://community.csdn.net/Expert/
Floating | Toolbar The program was analyzed from someone else's website! Because the other side of the Web site using the framework, but also canceled the right mouse button function, so the cost of a good long time!
When you browse the page, the
Reference | objects | Array Onmouseover mouse over object
B.18 Links Array
It is a property of the Document object, a list of all the links in the documentation.
Property
Number of links within length document
B.19 Location Object
It is a
Javascript| Control
The development of the layer in the practical application of more important, such as floating ads, and so on, I have a brief discussion here.1. Show or hide the control layerBoth methods are in fact controlled style.Method One:
The javascript| keyword does not remember when to look at the JScript grammar tutorial, which says that when declaring a variable, it ignores
varThe keyword is completely legal. It was also because of the thought that JavaScript was loosely-typed
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