JavaScript

A Boolean (logical) object is used to convert non-logical values to logical values (true or false). The following describes the initial values of a Boolean object in javascript: Boolean (logical) the object is used to convert non-logical values to

This article mainly introduces two methods for js dynamic splicing of regular expressions. For more information, see Method 1: When creating a project, you may need to use js to verify the correctness of the form input. In this case, you need to

Next, let's talk about the bit operations in js (also applicable to other languages) based on your own cognition. If there is an error, please note that most languages provide bitwise operators, bitwise operators are widely used in c, c ++, and

Native javascript seamless scrolling currently supports vertical and horizontal scrolling. The following is a good example. You can refer to the currently supported vertical and horizontal scrolling. Http://lgyweb.com/marScroll/ The following

This article introduces you to precise calculation, numerical formatting, and direct introduction of js files. The Code is as follows: (Function (){Var calc = {/*The addition function is used to obtain accurate addition results.Note: The addition

During project development, arrays often contain a lot of repeated content, that is, dirty data removal operations. This article focuses on several methods of array deduplication. For more information, see. 1.According to the principle that keys in

This article describes the implementation of the jquerysortable drag method in an example. If you are interested, you can refer to the following two parameters for all event Callback functions: event and ui, the browser has its own event object and

The requirement is a string. If you want to delete the last character of the string, such as "1, 2, 3, 4, 5,", how can you use javascript to delete the last? The following three methods are provided: 1. Substring is used most, which is also used

The form submission method used in the previous project. The form () method can be used to separate the submission event from the submit button and bind it to any event, the following is a good example. You can refer to the form submission method

This article gives you a detailed description of the parameters in the Date function in JS in actual use. If you are interested, do not miss creating a Date object. You can use the following methods: The Code is as follows: Var now = new Date ()

This article mainly gives a detailed summary of the event object attributes and methods in jquery. If you need them, you can refer to them and hope to help you with JQuery Reading Notes-Event attributes. The Event attribute in JQuery events is often

This article mainly introduces how to move the cursor to the div and Show Details on the floating layer. The code of the instance that overlaps the left margin of the top margin of the layer and the div is displayed. For more information, see: The

Javascript select operations are common in forms. You can search for a lot of related information on the Internet. Next we will introduce in detail the various methods of JS dynamic select operations, if you are interested, you can refer to the

The implementation of this algorithm is to simulate the thinking and computing process of the human brain. If you need it, you can refer to it. 1) when we get a question, we will first follow the conditions we already know, sort and analyze the data.

The web application can be started only when the machine is connected to IOT platform. The following code uses javascript to determine whether the machine is connected to IOT platform. The Code is as follows. For more information, see, the web

There are many methods to implement the random number generation algorithm in JS. This article introduces a good method. The Code is as follows. If you are interested, you can refer to it and hope to help you. 1: The Code is as follows: Var MT = [

Serialization is the process of converting the object state to a retained or transfer-able format. In contrast to serialization, deserialization converts a stream into an object. These two processes are combined to easily store and transmit data

This is a jQuery-based effect. When the mouse hangs over a small image, a large image will pop up, and the big image will move with the mouse. This effect was originally originated from Comrade Min's idea, at the beginning, only the pop-up images

This article mainly introduces the misunderstanding of whether the function parameter in JS is to pass the value (byVal) or to transfer the address (byRef). We will explain through examples, if you have any need, you can refer to the common

The real-time display time on the webpage not only adds color to the webpage, but also helps the viewer master the current time. In order to improve the website development speed, you can encapsulate the main code in a separate function and call it