Verify the validity of the IP address and subnet mask in js.

Function checkIP){Obj = ip;Var exp =/^ (\ d {1, 2} | 1 \ d | 2 [0-4] \ d | 25 [0-5]) \. (\ d {1, 2} | 1 \ d | 2 [0-4] \ d | 25 [0-5]) \. (\ d {1, 2} | 1 \ d | 2 [0-4] \ d | 25 [0-5]) \. (\ d {1, 2} | 1 \ d | 2 [0-4] \ d | 25 [0-5]) $ /;Var reg = obj.

Angularjs requeirjs Configuration

The scaffolding project generated by yeoman generator on the Internet is not ideal. Npm install-g generator-angular-require Yo angular-require I don't need that anymore. Now I am looking for a closer look at it on github. Directory

Js: In-depth functions (functions are objects)

// Because the function is an object, you can directly pass the function through parameters. You can also use the function as the return value.Function calFun (fun, arg ){// The first parameter is the function object.Return fun (arg );} Function sum

Browser compatibility of different versions for local image Preview

1. IE browser 6: directly obtain the value of the inputFile object and fill it in the src of the img tag.7 ++: the absolute path cannot be used to display images due to browser security restrictions. The AlphaImageLoader filter technique is required

Javascript (arguments)

Cause Today I went to The Kingsoft network to recruit interns. I was a bit uncertain when I had a question. After all, my head was notJavascript parserAnd then you can open the chrome console. After running the SDK, you feel that you have to

Three jquery instance codes for dynamic loading of js, with the js removal method attached

Copy codeThe Code is as follows:! -- Three types of jquery instance code for dynamic loading of js are provided here. Because jquery is convenient for users, you only need one sentence to use jquery to dynamically load files $. getscript ("test. js "

GitBook-use GitHub and Markdown to create books

GitBook is a command line tool (also a Node. js Library) that allows you to use GitHub/Git and Markdown to build beautiful programming books that can contain interactive exercises. GitBook supports creating books in multiple languages. Each language

Solution to invalid image onload event in IE browser

The implementation of the Story mode is to load only the currently viewed photo and the two photos below it, and load and render the comment area only when loading the photo, before an image is loaded, a one-pixel image will be taken into place, and

Use of javascript --- arguments object

1. Any function contains an arguments object, which is similar to an array. You can use a subscript to access data members of arguments. Arguments is mainly used to save the actual parameter data of the called function. function test() {

Json application in action

This article focuses on the Response Processing of json data in action; if you need to see some special effects of front-end code or ajax json reception, please refer to the previous blog: http://blog.csdn.net/yangkai_hudong/article/details/24422817

Common CSS attributes

) Attribute Description Background Set all background attributes in a declaration Background-attachment Set whether the background image is fixed or scrolling with the rest of the page Background-color

Jquery selector to exclude a DOM element (example)

There are many jquery selectors. There are many ways to select a DOM. How can we exclude a certain element set? The following are examples: 1. Select All img elements to exclude the number of elements in class = phpernote:Copy codeThe Code is as

Small issues that are prone to when javascript uses regular expressions for verification

I'm just a newbie. I hope you can make an axe to your shortcomings. LaughToday, when I used regular expressions to verify javascript, I encountered a problem, that is, it could not be correctly matched and the submission form failed. It was written

Jquery custom drop-down list example

Since JQ custom page plug-ins and table plug-ins were last made, they have not been customized. This month, they have been using both linq and ef, the basic front-end has never been touched. Today, a colleague said that a project needs to include a

Simple implementation of yield in JavaScript

Just now, we suddenly had a chance to traverse the iterator directly with silly next. Why must we implement this silly next? Directly implement each. In this way, Yeah and Yitong write the first ultra-Concise version in a short time: Code   function

Common SqlServer built-in functions and usage

Common SqlServer built-in functions and usage Select cast ('2014/1/03 'as datetime ); Select convert (varchar (10), GETDATE (), 120); -- convert to date type Select case when id = 1 THEN 'a0 'else 'TT' END from demo1; -- case when Select len ('ssa

Simplified CSS code

The simplified CSS code can help reduce the size of the style file, so that the code is clear and easy to maintain.Use abbreviated attributes and default values {:;:;:;:;}{:; }{:;:;:;:;:;:;}{:;} Commonly abbreviated attributes include animation,

CSS3.0 box model display: box; details

Box-flex is the new box model attribute added by css3. Its appearance can solve the layout through N multi-structure and css. A typical layout application is vertical height, average water distribution, and proportional layout. Currently, the

Js checks password strength and displays prompt information

Using Ajax implemented by javascipt to determine the strength of passwords, most websites with user registration functions will have such a function. As WEB programmers, they should write such small modules, if you don't understand it, let's look at

Javascript retrieves parameter values from url strings

Javascript obtains parameter values from url strings. It is particularly important today when Ajax is prevalent, because ajax needs to pass values in most cases to achieve better user interaction, it is not difficult to use JS to obtain URL string

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