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Detailed explanation of HTML onfocus gain focus and onblur lose focus events

HTML onfocus event attribute definition and usage The onfocus attribute is triggered when an element gains focus. onfocus is often used<input> ,<select> And <a>. Tip: The onfocus attribute is the opposite of the onblur attribute. Note: The onfocus attribu

2025-02-21
Html5 localStorage summary

First, what is LocalStorage, SessionStorage In HTML5, a new LocalStorage feature is added. This feature is mainly used as a local storage, which solves the problem of insufficient cookies storage space (Cookie's storage space for each cookie storage s

2025-02-21
JavaScript uses constructors and prototypes to simulate the functions of C# classes

Copy the code as follows: //Constructor function person(name, age) {this.name = name;this.age = age;}//Define the person prototype, and the attributes in the prototype can be referenced by custom objects person.protot

2025-02-21
Example discussion of the default expansion of the RowexPander control in Extjs

Copy the code code as follows: // Expand the Function Expendrow () {var I; // cycling temporary variable var arr = []; //

2025-02-21
JS implements calendar to get the specified date, week number and week number sharing examples (js get the week number)

It should be necessary to have interaction, and Js is chosen to implement it, which can be regarded as a first test of pair programming. I will write the display part in html, and the button clicked trigger event function is check(); copy the code as foll

2025-02-21
HTML5 uses constraint to verify API to check the code instance of the input data of the form

HTML5 has a great optimization of forms, whether it is semantics, small components, or data format verification. I guess you will definitely use browser compatibility as an excuse to use these new features, but this should never be the reason why you stag

2025-02-21
H5 calls the camera to take pictures and compress the example code of the picture

Organize the document, search for an instance code for H5 to call the camera to take pictures and compress the picture, and sort out and streamline it. The background has to make a H5 page recently. The main function is to call the camera to take pictures

2025-02-21
Use PHONEGAP cloned and delete the implementation of contacts

Examples as: below:<!DOCTYPE html><html><head><meta charset=UTF-8><title> Database exmple</title>

2025-02-21
Javascript connects multiple arrays without using concat to solve it

The first method is the well-known concat, but there is a certainty of this method that this method will not change the existing array, but will only return a copy of the connected array. If we just want to add elements of a new array to an existing array

2025-02-21
Three ways to jump to the page by clicking button tags in HTML

Method 1: Use onclick event<input type=button value=按钮onclick=javascrtpt:window.location.href=http://www.baidu.com/ /> Or use the button label directly

2025-02-21
Dynamically load dtree.js treeview (sample code)

Copy the code code as follows: <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd"> <h

2025-02-21
The difference between I, EM, B, Strong elements through HTML5 specifications

Foreword has added a lot of new labels for semantic HTML5. Among them, the two groups of labels of i, EM, and B, and Strong are the easiest to confuse. If you don't explore well, it is really unclear. This is also a problem that often ask in front -en

2025-02-21
Write jQuery framework from scratch

With the development of the times, more and more excellent frameworks have appeared in the JavaScript camp, which has greatly simplified our development work. When we use these frameworks, should we also think about how they are built? If you are not sati

2025-02-21
Detailed explanation of common Windows Task Manager processes

In W2K/XP, press the crtl+shift+Esc keys at the same time to open the Windows Task Manager and click "Process". You can see many running processes. If you look closely, there are many strange EXE files running? The following are not real service

2025-02-21
Html5 mobile terminal barrage animation implementation example code

It is known that 20 pieces of content must have a barrage effect, divided into three layers, and the speed is random. Let’s take a look at the effect first: So filling in and generating is not considered here. Just a display effect. If you want to see wha

2025-02-21

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