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Javascript tutorial

JS reports an unfinished string constant error when introducing autocomplete component

Regarding my problem and solution: I encountered a js report string constant error when introducing the autocomplete component of jQuery. Cause analysis: First, right-click on the page to see that the encoding is utf-8, secondly, check the function that r

2025-02-25
Verify the uppercase letters, numbers and Chinese in JavaScript

Copy code code as follows: var reg = /^[u4e00-u9fa5]+$ /; // Verify Chinese var cp = $ ("input [name = 'cpid']"). Val (); ; i

2025-02-25
Introduction to the differences between setTimeout() and setInterval() methods

Timers setTimeout() and setInterval() are both js timing functions. There are some differences between them. setTimeout(): Explanation in the js manual: used to call a function or calculation expression after the specified number of milliseconds; that is,

2025-02-25
IE6 drop -down box layer problem exploring and solving

JS needs to be added: Copy code code is as follows: $ ("#div_bksq"). bgiframe (); jsp need to add: Copy code code as follows:

2025-02-25
js this function call does not need to capture the id, name or tag name again

This is the node captured by the js you are currently executing. In this way, you can capture the id, name or tag name in js without writing methods such as document.getElement, saving some trouble. Usually obj is used instead. Copy the code code as follo

2025-02-25
Simple instance of the JS mouse pulley rolling event (compatible mainstream browser)

Copy the code code as follows:/** Event handler for mouse where event.*Mouse rolling event*/var whileel = function (event) {var delda = 0; if (! Event)/*

2025-02-24
JavaScript modification of src issue in IMG tag

1. When clicking a certain button, change the image in the image field and copy the code as follows:<img id="randimg" src="/servlet/CreateValidateNum" />

2025-02-24
How javaScript generates xmlhttp

Copy the code as follows: function ajaxFunction(){ var xmlHttp; try { // Firefox, Opera 8.0+, Safari xmlHttp = new XMLHttpRequest(); } c

2025-02-24
Use JS to control the tissue composition diagram can be dragged to the specified location at will

First of all, using JS control to generate a organizational structure diagram and then set this tissue structure. You can drag them to the specified location page code. As follows, the specific code instance can be downloaded and copying code code as foll

2025-02-24
Introduction to the use of CSS1compat for document.compatMode

document.compatMode BackCompat: Standard compatibility mode is turned off. Browser width: document.body.clientWidth; CSS1Compat: Standard compatibility mode is enabled. Browser width: document.documentEle

2025-02-24
Example of JS judging text box value

JS judges that they can only be numbers and decimal points (excerpted from other information, published here only for personal use and searching in the future) 1. Only numbers can be entered in the text box (excluding decimal points)

2025-02-24
JavaScript CreatexmlhttpRequest Object Summary Code

Copy code code as follows: var xmlhttp; function createxmlhttprequest () {if (window.xmlhttprequest) {xmlhttp = new xmlhttprequest (); if (xmlhttp.ooo

2025-02-24
JavaScript calls ajax to get text file content implementation code

In recent years, I have written too much JQuery. I haven't written traditional javascript for a long time. I have forgotten a lot of things. How many people still remember that implementing ajax operations in javascript requires the help of XMLHttpReq

2025-02-24
How to judge chrome browser by javascript

Use userAgent to determine whether the string returned by userAgent contains "Chrome". How to detect it is done through the indexOf method.<script type="text/javascript"> var isChrome = wi

2025-02-24
JavaScript Function Function Active Domain Learning Example (JS Activity Domain)

In some program -like programming languages, each code in the brackets has its own scope, and the variables are not visible outside the declaration of their code segment. We call the block scope (block scope) And JavaScript does not have a block -level sc

2025-02-24

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