Example of the length of characters intercepted by byte in JS

** Process long strings, intercept and add ellipsis* Note: The halfwidth is 1 and the fullwidth is 2.** PStr: String* PLen: truncation Length** Return: the truncated string.*Copy codeThe Code is as follows:Function autoAddEllipsis (pStr, pLen ){Var _

Whether javascript is an object-oriented language

1. It has objects and can contain data and data processing methods. Objects can contain other objects. He has no class (before javascript2.0 is actually implemented), but it has a constructor that can do what the class can do, including containers

Parsing JQGrid usage (column editing, adding rows, and deleting rows)

Copy codeThe Code is as follows: $ (Document). ready (function (){InitPlsfList ();});// Initialize the grid listFunction initPlsfList (){// Cache the table column array. The key is the name of the page element, and the value corresponds to the field

How to solve the problem that the Js parameter value contains single or double quotation marks

1. Passing parameters using single quotes: Test1 If one of the parameters contains single quotes, this method will fail. Test1 Improvement: \ 'and OK are added with single quotes. Test 2. The problem of single quotes is solved above, but if

ZTree plug-in Multi-choice drop-down menu instance code

ZTree plug-in Multi-choice drop-down menu instance codeCss and jsCopy codeThe Code is as follows: HtmlCopy codeThe Code is as follows: OK Custom js CodeCopy codeThe Code is as follows:

Quick solutions to prevent the use of the tab key on webpages

In some web pages or in the pop-up layer, we generally do not want to use tab or After the tab key is used, some problems may occur, such: After the pop-up layer, the tab key can also be operated on the page, which leads to a script error. So what

Use javascript to select both the left and right sides of ListBox. Select one or more options.

Copy codeThe Code is as follows: list Test Note 1: Move left and right to selectNote: This page has only been tested in IE6/FireFox1.5. Other browsers or other versions are not tested.Multiple = "multiple" ondblclick = "moveLeftOrRight (document.

How jquery listens to changes in div content

We do e-commerce. The javascript framework uses jQuery. during the development process, we encountered the problem listed in the above title: how to listen to the changes in div content.First give the final code (subsequent analysis ):Copy codeThe

Js controls instance code for displaying different css styles in different time periods

Javascript functions can be placed in a separate js file or in the flag of the current page. Copy codeThe Code is as follows:Function getCSS (){Datetoday = new Date ();Timenow = datetoday. getTime ();Datetoday. setTime (timenow );Thehour =

Js Implementation of Slide effect (based on jquery plug-in)

The jquery. smallslider. js plug-in can also be used to achieve the slide effect.The htm code is as follows:Copy codeThe Code is as follows: Js Code:Copy codeThe Code is as follows:$ (Document). ready (function (){$ ('# Flashbox '

Javascript extracts numbers from strings

JavaScript extracts numbers from strings

How does jquery determine whether an element has a specified style?

There are two scenarios:1. If css is written as an in-row style, you can determine it by obtaining the value of the style attribute, for example:Determine whether the div element with id divid has a font-size style:Copy codeThe Code is as follows:

Example of self-testing the implementation of sliding Images Using jquery

I recently reviewed some of my previous basic knowledge and wrote an image slide plug-in using jquery. Although there are still some problems, it is easy to use. You only need to bind the slideW () function to the target element, this function

JQuery Mobile navigation bar code

A navigation bar consists of a group of Horizontally arranged links, which are usually included in the header or tail. By default, links in the navigation bar are automatically converted to buttons (data-role = "button" is not required "). Use the

Example code of JS implementation dragging

GetBoundingClientRect () to get the position of the page ElementCopy codeThe Code is as follows:Document.doc umentElement. getBoundingClientRect This method returns an object to obtain the position of an element on the left, top, right, and bottom

JavaScript custom methods implement trim (), Ltrim (), Rtrim () Functions

Removing spaces at both ends of a string is a very common method for string processing. Unfortunately, JavaScript does not have these three methods, which are only customized:Step 2: Add a member to StringCopy codeThe Code is as follows:String.

Sample Code in the pop-up box in the lower right corner of jquery

Copy codeThe Code is as follows: display in the lower right corner of the pop-up box X In the lower right corner of a jquery implementation, a prompt announcement is displayed, learning to do it. Comments from everyone.

Basic operations such as adding, modifying, deleting, and querying Jquery EasyUI

I first learned about Jquery EasyUI and read some projects developed by bloggers. The pages are very dazzling, and I feel that the functions are quite powerful and the results are quite good. Recently I have been wanting to systematically learn a

Summary of several methods for js dynamic loading events

Some methods to dynamically load javascript events sometimesWe often need to dynamically add events in JS, which involves browser compatibility issues. The following several methods are often used together. Method 1: setAttributeVar obj = document.

Summary of call and apply usage in js

I went to the interview the day before yesterday. gg asked some js knowledge, including a call and apply usage question. Although I used the call method 365 days ago, I still couldn't answer it, summary today Call and apply. They are used to bind a

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