JavaScript

This article mainly introduces the observer mode (publisher-subscriber mode) in JavaScript design mode. This article describes the observer mode in JavaScript in detail, you can refer to the observer mode (also known as publisher-subscriber mode) as

This article mainly introduces the singleton mode of JavaScript design patterns. This article uses a practical example to explain the singleton mode in JavaScript, for more information, see Peter Seibel, author of Practical Common Lisp. If you need

When multiple checkboxes are selected, how can we determine whether there are any items we want? Below is a piece of code. Let's take a look at a problem we encountered while working on the project today, after the checkbox is selected, the selected

This article mainly introduces the JavaScript scope. This article uses a concise language and an intuitive test result image to explain the JavaScript scope. If you need it, refer to the first article of the golden code: Js does not have

This is a jquery-based text running up, and its effect is similar to a marquee. In some cases, it is more practical. I would like to share with you the implementation code to achieve a similar effect, there are spaces in the lawn lamp. the effect is

This article mainly introduces the concept of javascript prototype chain and inheritance, and uses prototype chain to implement inheritance, classic inheritance, combined inheritance, and parasitic combined inheritance. Very practical. It is a very

Objects are very important in javascript. Whether you fully understand them is directly related to your basic understanding of the entire javascript system. To put it bluntly, javascript is a group of objects .. (Beep !). Common Object creation

This article mainly shares with you a JavaScript processing example of each line of characters in textarea, which is very simple, but very practical. You can take a look at it. One JavaScript instance per day-process each line of characters in

This article describes how to use js to implement Website Functions compatible with IE6. It is a very practical tips. If you need it, refer to the issue of iframe not displayed under ie6. In ie6, iframe is not displayed. It can only be displayed

Window. onload must have been used by everyone. It is executed during window loading. How can we determine if window. onload is used multiple times? Next, I will share with you a method window. onload that must have been used by everyone. It is

This article mainly introduces several methods for merging arrays in JS and compares their advantages and disadvantages. This article describes how to merge arrays in concat, loop insert, reduce, and other methods, and compares their advantages and

I often see these two buddies. It seems that they are talking about their differences. I have never figured out what the role is. Now I want to record my understanding. If there are any mistakes, I hope to point them out! First, let's look at the

Common sorting algorithms implemented by JavaScript include Bubble sorting, selection sorting, insert sorting, shell sorting, quick sorting (recursion), quick sorting (stack), Merge Sorting, and heap sorting. Today, we will analyze in detail the

Press Ctrl + Enter to send the message. The train of thought is to listen to the onkeydown event of textarea. When the ctrl key is pressed and the keycode is 13 (Press Enter), call function 1 of sending the form, listen to the onkeydown event of

This article mainly introduces the cross-browser compatibility between css and javascript, including common css compatibility issues and javascript compatibility issues, and the compatibility analysis of common browsers such as IE and Firefox, for

This article mainly introduces the example of using the nodejs command line parameter processing module commander. commander is a very tall command line parameter processing module. For more information, see, previously, we used the built-in process.

When you select the show plaintext check box, you need to display the password entered by the user in plaintext. If you do not select this box, you need to change the ciphertext. The problem is that the type attribute abstract of the input cannot be

A js plug-in has been compiled. To use this plug-in, you must first introduce the plug-in Js in html, then add a script tag, and call it in it, if you need it, you can take a look at your formal career. In the past few days, you have made a unified

This article mainly introduces the common precautions for defining JavaScript Functions, including common errors and precautions. For more information, see this article to summarize common problems related to defining javascript Functions. Contains

A full screen switching effect implemented by jquery, with a small circle icon on the right side. One screen is switched at each point. Of course, you can also scroll the mouse to switch the page. Today we want to bring you a full screen switching