JavaScript

Normally, the array is implicitly filled or the specified array subscript is displayed. However, arrays in JS can assign values to elements in the form of names, which forms an associated array, for example: CopyCode The Code is as follows: var

DHTML:It is not a new language, but a combination of HTML, CSS, and JavaScript. DHTML contains the following three meanings: (1) Mark webpages as elements through HTML (2) Use CSS to design typographical styles between elements and control the

Js files that can be used normally the other day. After some items are added, the prompt box in the alert () dialog box is always garbled with Chinese characters. I have read a lot on the Internet, basically, the answer is to add or replace gb2312

Copy codeThe Code is as follows: function SetIFrameHeight (down ){ Var Sys = {}; Var ua = navigator. userAgent. toLowerCase (); Var s; (S = ua. match (/msie ([\ d.] + )/))? Sys. ie = s [1]: (S = ua. match (/firefox \/([\ d.] + )/))? Sys. firefox = s

You can use several methods to determine whether an attribute exists in an object. 1. Use the in keywordThis method can be used to determine whether an object's own attributes and inherited attributes exist. Copy codeThe Code is as follows: var o =

When writing comprespt code, the typeof and instanceof operators are used from time to time and are mandatory. But! Using them is always hard to get the desired results directly, and it is very tangled. It is widely said that "these two operators

The core of the algorithm is partial matching tables and rollback algorithms. The implementation of partial matching tables is as follows: Copy codeThe Code is as follows: function kmpGetStrPartMatchValue (str ){ Var prefix = []; Var suffix =

This is used for the first time. Make a record and call the local program on the html page: Copy codeThe Code is as follows: Enter the path of the program to run: OK

To solve this problem, I wrote a function that intercepts strings based on the number of bytes yesterday.It is easy to use, just like String. subString (start, end. For example, var str = "cailove"; var str1 = str. subCHStr (2, 2); var str2 = str.

1. Handling Iframe adaptive height under the same domain name Copy codeThe Code is as follows: Of course, here I use Asp. Net MVC. Here src is set as the routing structure.Copy codeThe Code is as follows: When an iframe nested page is loaded,

I have been writing JavaScript code for a long time, and I cannot remember the beginning of my time. I am very excited about the achievements of the JavaScript language in recent years. I am lucky to be one of those achievements. I have written many

I attended a front-end interview yesterday, with an array of removing duplicates. The first thought was the method for storing key values in objects. The Code is as follows: Method 1: (simple key value storage) Copy codeThe Code is as follows:

There are three main methods Conversion functions, forced type conversion, and weak type conversion using js variables. 1. conversion functions: Js provides two conversion functions: parseInt () and parseFloat. The former converts the value to an

Copy codeThe Code is as follows :/** * Convert a date to a timestamp * Date Format: 21:12:13 * Time_str: Date segment * Fix_time: 21:12:13 */ Function strtotime (time_str, fix_time ){ Var time = (new Date (). getTime (); If (time_str) {//

Copy codeThe Code is as follows: Here are some of my shares. I love programming and hope to be more programmers. If you are one of them, please add your friends, the following articles are useful things for you. You can take notes for yourself and

Query small applications of DBpedia using JavascriptIn the previous article, we learned about SPARQL and SPARQL Endpoint, and made a simple SPARQLWrapper. js to query some data from DBpedia.This article tries to use SPARQLWrapper. js to read the

Therefore, they always store the latest and most accurate information. Essentially, all NodeList objects are queries that run in real time when accessing DOM documents. For example, the following code causes an infinite loop: Copy codeThe Code is

SetTimeout is often used in Javascript to delay the execution of a function, for example: Copy codeCode: setTimeout (function () {alert ("Hello World") ;}, 1000 ); The alert window will pop up one second after this sentence is executed. Let's look

Copy codeThe Code is as follows: var hkey_root = "HKEY_CURRENT_USER "; Var hkey_path = "\ Software \ Microsoft \ Internet Explorer \ PageSetup \\"; Var hkey_key; Function printPage (){ Try { Var RegWsh = new ActiveXObject ("WScript. Shell

Common check methods. First, define a valid file extension and store it in the array. Obtain the file path of the FileUpload control in JavaScript and obtain the file extension in the path. Compare it with the extension in the array. If yes, the