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Example of compatible writing of JS event addition and removal

This article describes the compatible writing of JS event addition and removal. Share it for your reference, the details are as follows: var EventUtil = { addHandler : function (element , type, handler { if ( eleme

2025-07-08
js simple examples to determine whether a set of dates are continuous

This is a question asked by a friend in the group. At that time, I said that I could just judge whether the day was adjacent. Later, I thought about it carefully and found that it was completely wrong. The problem requires that 5 dates of the same format

2025-07-08
Bootstrap writes a login page that is suitable for both PC, tablet and mobile phone

Bootstrap is like a front-end framework. It has already arranged a lot of CSS, and can be called directly if it is required for front-end development. The website address is http://www.bootcss.com. Using Bootstrap can reduce the layout time of CSS during

2025-07-08
Introduction to the difference between JS constructor and prototype prototype

The constructor method is very useful, but there is a function that wastes memory allocated by the prototype method is shared by all objects. The attributes allocated by the prototype method are independent.-----If you do not modify the attributes, they a

2025-07-08
Comparison of methods of arrays and strings in javascript

In the previous example, strings and arrays have many similarities. They have many methods and are very similar; but they have differences. Strings are immutable values, so they can be regarded as read-only arrays. This article compares similar methods of

2025-07-08
Bootstrap zero-basic introduction tutorial (III)

What is Bootstrap? Bootstrap is a front-end framework for the rapid development of web applications and websites. Bootstrap is based on HTML, CSS, and JAVASCRIPT. History Bootstrap is by Twitter's Mark Ott

2025-07-08
The difference between Nodejs global installation and local installation

The previous article "Detailed explanation of common npm commands in Nodejs" mainly organizes the most commonly used npm commands and related introductions. It mentions global installation (npm install gulp -g) and local installation (npm instal

2025-07-08
A brief discussion on the front-end preview of js picture filereader and window.URL.createObjectURL

Brief discussion on filereader and window.URL.createObjectURL//preview img: filereader method document.getElementById('imgFile').onchang

2025-07-08
A brief analysis of scrollTop in JavaScript

Meaning: scroll bar height function: scroll loading (ajax), scroll navigation fixed positioning, scroll frame positioning, etc. Show the effects of scroll navigation and sidebar scroll fixed positioning: 1. Chrome browser document.body.scrollTop and docum

2025-07-08
Bootstrap form layout style source code

Bootstrap provides three form layouts: vertical form, inline form and horizontal form to create vertical or basic form: ・To the parent<form> Add role="form" to the element.・Put the label and control in a class .form-group<div> middle. This is th

2025-07-08
JS implements the method of closing the current page without popping up the prompt box

This article describes how JS implements the method of closing the current page without popping up a prompt box. Share it for your reference, the details are as follows: Close the current page and open a new page (no prompts) function closeWinAndOpen(url)

2025-07-08
Bootstrap drop-down menu effect example code sharing

Dropdown menu Dropdown is not in the form<select><option value=''></option></select> That kind, but the kind that is common in the navigation bar. Bootstrap official website has very few explanations for dropdown menu Dropdown, even their English official

2025-07-08
How to dynamically insert content into DIV by JS

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN""http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd"><html xmlns="http://www.

2025-07-07
Bootstrap's first lesson in zero-basis learning

I need to make a simple web page recently. Considering the lack of front-end experience, in order to produce quickly, the project is just a tool and has no requirements for the project, so I chose Bootstrap as the web framework. The original intention of

2025-07-07
The effect of multiple images being implemented in JS to play slideshow in turn

This article describes the effect of taking turns playing slideshows in JS. Share it for your reference, as follows: <body><script language="javascript" type="text/javascript"><!--/**************

2025-07-07

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