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JavaScript validation of mobile phone number and implementing asterisk (*) instead of instance

1. JavaScript replaces the 4 digits in the middle of the mobile phone number // Matches the beginning and end of the mobile phone number, and outputs '12345678901'.replace(/(/d{3})/d{4}(/d{4})/, '$1****$2'); example

2025-08-10
AngularJS ng-bind-html instruction detailed explanation and example code

AngularJS ng-bind-html directive AngularJS instance binding<p> innerHTML into variable myText:<!DOCTYPE html><html><head><meta charset="utf-8">

2025-08-10
JS implements image cropping and preview effects

Today I learned the image cutting effect of the front-end of the web again. There is an area to frame a certain part of the picture, and the preview of the effect picture shown below: Does it look very cool? Let's briefly introduce the implementation

2025-08-10
A brief discussion on whether JavaScript function parameter passing is value passing or reference passing

In traditional concepts, it is believed that JavaScript functions pass reference passing (also called pointer passing), and some people believe that both value passing and reference passing are available. So what is going on with JS parameter passing? In

2025-08-10
JS method of filtering multiple words using regular expressions and replacing them with asterisks of the same length

This article illustrates how JS uses regular expressions to filter multiple words and replaces them with asterisks of the same length. Share it for your reference, as follows:

2025-08-10
A table tells you the difference between windows.onload() and $(document).ready()

After the browser loads the DOM, it will add events to the DOM element through javascript. In javascript, the window.onload() method is usually used. In jquery, the $(document).ready() method is used. Let me introduce the difference between the two below.

2025-08-10
Several methods for checked and radio to be selected (detailed explanation)

0、环境<input type="checkbox" value="lol"/>lolvar lol = document.getElementsByTagName("input")[0];1、HTML DOMa.lol.checked =

2025-08-10
A detailed summary of focus management in Javascript

Focus elements Which elements can gain focus? By default, only form elements can get focus. Because only form elements can interact<input type="text" value="223"> There is also a way to get focus from non-form elements. First set the tabIndex attribute to

2025-08-10
JS replaces characters in strings that replace all instead of the first one

Sometimes when replacing a string with JS, replyText= replyText.replace("aa",""); This can only replace the first aa in the string. Sometimes all aa needs to be replaced, and this method cannot be used. . You can use the following meth

2025-08-10
A summary of JavaScript knowledge points (IV) detailed explanation of logic OR operators

In JavaScript, the logical OR operator uses || to represent var bTrue = true;var bFalse = false;var bResult = bTrue || bFalse; The following truth table describes the behavior of the logical AND operator: in JavaSc

2025-08-10
Deeply understand the usage and usage of logical expressions

Let’s talk about logic and (&&), it can understand the first level from three levels, the simplest is the logical and the simplest, that is, when the lvalue and rvalue are true, return true, both sides are false or one side of the values are fasle

2025-08-10
Standard js seamless scrolling effect

The examples in this article share the code for implementing js seamless scrolling effect for your reference. The specific content is as follows<!DOCTYPE html><html lang="en"><head><meta charset="UTF-8"><title> Seamless scrolling</title>

2025-08-10
Simple usage example of JS popup plugin zDialog

This article describes the simple usage of JS pop-up plug-in zDialog. Share it for your reference. The details are as follows: Because there are no elements that can be displayed on the Frameset, it has been redefined, an index.htm, and the operation on i

2025-08-10
HTML5 DeviceOrientation implements the code example of mobile website shake function

This article mainly introduces the code example of HTML5 DeviceOrientation to implement the mobile website shake function. This article directly gives the implementation code. Friends who need it can refer to the introduction below to make two statements

2025-08-10
AngularJS basic ng-include directive simple example

AngularJS ng-include directive AngularJS instance contains HTML files:<!DOCTYPE html><html><head><meta charset="utf-8">

2025-08-10

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