JavaScript

Myth is a Preprocessor, a bit similar to CSS polyfill. Myth allows you to write pure CSS, and also allows you to use tools similar to LESS and Sass. You can still use variables and mathematical functions, just as you use in other

Function show (type){Document. getElementById ("mark"). value = type; If (type = 1){Var judge = document. getElementById ("d_judge ");Var r = "block "; If (judge. style. display = "block "){R = "none ";}If (judge. style. display = "none "){R =

I have discussed writing methods in JavaScript before. Private implementations are not discussed. Read this article. We know that the implementation of private attributes in JS is essentially var + closure. As follows:Copy codeThe Code is as follows:

Jquery implements a dynamic menu in the same way as jquery's pop-up window, and uses JavaScript to operate css. The procedure can be divided into the following steps: • Create an html page containing the menu to be expressedCopy codeThe Code is as

You can use css to control pages in four ways: Intra-row style (Inline style), inline style, link style, and pilot type. Inline style is written in the style attribute of the html Tag, such as Embedded styles are written in style labels. For

Let's take a look at it for yourself. Please give me some advice. I wrote it a few months ago. Now I want to sort it all out.Copy codeThe Code is as follows: what do you do if you will be charged? 0 0 0 % 0 %

C # string. format is used in many places, so Javascript is used to implement a simple version: Copy codeThe Code is as follows:String. format = function (){Var formatStr = arguments [0]; If (typeof formatStr = 'string '){Var pattern,Length =

~ : The bitwise non-operator is composed of a wavy line (~) The result of executing a non-bitwise operation is the reverse code of the returned value.Copy codeThe Code is as follows:Var num1 = 3; // my lucky number is 3Var num2 = ~ (Num1 );Console.

For example: JSON string:Var str1 = '{"name": "cxh", "sex": "man "}';JSON object:Var str2 = {"name": "cxh", "sex": "man "}; 1. convert a JSON string to a JSON object To use str1 above, you must use the following method to first convert it to a JSON

I encountered a problem at work today.The Code is as follows:Copy codeThe Code is as follows:Var status = 1;Var ob = $ ("[name = 'email ']");$. Ajax ({Url: "{: U ('home/Index/checkemail ')}",Data: "email =" + query. email,Type: "post ",DataType:

Copy codeThe Code is as follows: scroll up and down on an ad strip _ horizontal ad strip up and down original code:

Copy codeThe Code is as follows: test movable div Style = "cursor: move; position: absolute; width: 100px; height: 60px; border: 1px solidSilver; left: 100px; top: 100px; z-index: 9999; "> Document. all [] is an array variable consisting of all

Copy codeThe Code is as follows: Ideas:1. Make the stubborn file field transparent: style = "-moz-opacity: 0; filter: alpha (opacity = 0); opacity: 0;"2. Use a text box and button to replace the appearance of the file.3. Place the Browse button of

Copy codeThe Code is as follows:$ ("# SaveInfo"). show ();SetTimeout ('$ ("# saveInfo"). hide ();', 3000 );If (opener &&! Opener. closed ){Opener. location. reload (true );} SetTimeout: How long is the latency to execute? Use:

First view results  Function:When you click the drop-down box, the drop-down list below is automatically displayed, and is added based on the search entered in the input box. It is automatically searched in the background and uploaded to the

Copy codeThe Code is as follows: Chapter Category the first unit of science is systematic knowledge 1. consistent and ever-changing 2. Dual-language era 3. How do people make decisions 4. Train people who work independently and think independently

The right shift of negative numbers in javascript and the right shift of logic are very confusing, especially the right shift of logic >>>, you will find that even if a small negative number, after the right shift, we can also get a huge number. Why?

Copy codeThe Code is as follows: (null) 1 Copy codeThe Code is as follows:// Obtain the html ControlVar select = document. getElementsByName ("aaa") [0];Select. selectedIndex = index;// Create a new Option objectNew Option (text, value)New option (

Copy codeThe Code is as follows:// Check the file size and typeFunction fileChange (target ){// Check the type of the uploaded fileIf (! (/(? : Jpg | gif | png | jpeg) $/I. test (target. value ))){Alert ("only jpg files can be uploaded | gif | png |

Similar '~! @ # $ % ^ & * () _-= [] {}|; ': ",. \/<>? When such special characters are used as parameters, if they are not processed, the product will pass the parameter error.Solution: EncodeURI MethodEncodes a text string into a valid Uniform