JavaScript

The current web, affecting user access speed is not just the speed of File Download. When all files are downloaded from the server, rendering from the browser to the time when users can respond, this time will still consume a long time. At the same

Use JS to write the mask layer login box and Couplet advertisement, and automatically scroll with the scroll bar to keep the user visibleOkay, it's not much nonsense. The code is particularly detailed with comments. Please refer to the code.Copy

The so-called crawler can be simply understood as using programs to operate files, but these files are not local and need to be pulled. I. crawler code parsing 1. get the source code of the target page number Node provides many interfaces to obtain

In the previous experiment, distance calculation and area calculation had been a problem and it took a long time to find the cause of the problem. Now it is successfully completed. 1. lengthParams. polylines = [geometry]; 2. this. outSR = new esri.

Someone analyzed the logic of the 12306 background .. Booking and unsubscribing for train tickets are different from ordinary shopping.One difficulty is that train tickets can be sold in substations. For example, a train ticket from Beijing to

Sometimes, when uploading files, you may encounter a situation where you need to reset the entire form, but the problem is that other browsers do not have any problems, it is okay to directly reset form or trigger the click Event of the button whose

I don't know where I saw this article about jQuery encoding. It's very practical. I just recently studied the basic knowledge of jQuery. Today, I open my favorites to translate the original article, however, the content is very practical and may

Most of us have used JavaScript. In recent years, JavaScript has become more magical and easy with the popularity of various JavaScript frameworks. "Anonymous (Anonymous) function? I don't know what it is, but it looks similar to what I wrote ."You

1. HTML learning:First, it is very easy to learn HTML and HTML as a markup language.W3schoolThe above tutorial will be done once. Remember to do it one by one. Never be lazy. Once you get started, you will become more and more lazy, and you will not

Add the html statement directly in js. js parses the html string into the corresponding HTML statement and displays it on the front end.Copy codeThe Code is as follows: var el = document. createElement ('div ');El. innerHTML = " titleTest test0

The Application of ready () events is not familiar to anyone. The most common code for learning jQuery is jQuery (document ). ready (function () {}); jQuery (function () {}); $ (document ). ready (function () {}); $ (function () {}); the purpose and

Magic CSS3 animation is a uniqueCSS3Animation special effect package, you can freely use yourWebProject. You can simply introduce the CSS style: magic.css or the compressed version magic.min.css on the page. This project is now available on GitHub,

I. Three methods for obtaining function namesInstance 1: One method seen in the js authoritative guide: Function. prototype. getName = function (){Return this. name | this. toString (). match (/function \ s * ([^ (] *) \ (/) [1]} Instance 2: If the

I have previously written an article about the use of the Replace () function and used it to highlight search keywords. However, this function is not detailed here. The replacement parameter of the replace () method can be a function rather than a

JSONP is JSON with Padding. Due to the same-origin policy restrictions, XmlHttpRequest only allows requests to resources of the Current Source (domain name, protocol, port. For cross-origin requests, we can use the html script tag to perform

Implementing random numbers is a common programming task in various programming languages. The following describes how to implement random numbers in JavaScript. The first method is implemented by rewriting the Math. random method, and the second

For a person who has been familiar with C ++, it is a little difficult to suddenly turn to nodejs development. First of all, we need to understand what nodejs is. First, let's look at the name estimation as something related to javascript, in fact,

When I modified the system I wrote last year, I accidentally saw the effect of rendering the entire cell color into red using a standard tag that was not closed in the cell, as shown below: At that time, the problem was that an int integer was

We should have encountered many browser compatibility problems. When writing some pages, it may be good on IE8 and IE9, when we browse these pages in IE6, IE7, or other browsers, we may find that our pages are completely invisible. As a front-end

Image optimization: Image Quality Requirements and Image File Size determine the format of the image you use, and use a smaller image file to present a better image quality. When the image color is too rich and there is no transparency