Home Web Front-end JS Tutorial jQuery dynamically loading js script file implementation method

jQuery dynamically loading js script file implementation method

Apr 23, 2018 pm 02:57 PM
javascript jquery document

This time I will bring you the implementation method of jQuery dynamically loading js script files. What are the precautions for jQuery to dynamically load js script files. The following is a practical case, let's take a look.

Dynamic loadingJavascript is a very powerful and useful technology. This topic has been discussed a lot on the Internet, and I often use RequireJS and Dojo to load js

in some personal projects. They are very powerful, but sometimes the gain outweighs the gain. . If you are using jQuery, there is a built-in method for loading a single js file. You can use this method when you need to delay loading some js plug-ins or other types of files. Here’s how to use it!

1. The jQuery getScript() method loads JavaScript

jQuery has a built-in method to load a single js file; when the loading is complete, you can call back in Perform subsequent operations in function . The most basic way to use jQuery.getScript is this:

jQuery.getScript("/path/to/myscript.js", function(data, status, jqxhr) {
 /*   做一些加载完成后需要执行的事情 */ 
});
Copy after login

This getScript method returns a jqxhr, you can use it like the following:

jQuery.getScript("/path/to/myscript.js")
 .done(function() {
  /* 耶,没有问题,这里可以干点什么 */
 })
 .fail(function() {
  /* 靠,马上执行挽救操作 */
});
Copy after login

The most common place to use jQuery.getScript It is to delay loading a js plug-in and execute it when the loading is completed:

jQuery.getScript("jquery.cookie.js")
 .done(function() {
  jQuery.cookie("cookie_name", "value", { expires: 7 });
});
Copy after login

2. Caching problem

There is a very important problem when using jQuery.getScript , you need to use a timestamp string after the js address that needs to be loaded to prevent it from being cached. However, if you want this script to be cached, you need to set the global cache variable, like this:

jQuery.ajaxSetup({
  cache: true
});
Copy after login
jQuery.ajax({
      url: "jquery.cookie.js",
      dataType: "script",
      cache: true
}).done(function() {
  jQuery.cookie("cookie_name", "value", { expires: 7 });
});
Copy after login


Be careful about caching issues when loading scripts!

I believe you have mastered the method after reading the case in this article. For more exciting information, please pay attention to other related articles on the php Chinese website!

Recommended reading:

Jquery LigerUI detailed explanation of file upload steps

jquery dynamically loaded js file detailed explanation

The above is the detailed content of jQuery dynamically loading js script file implementation method. For more information, please follow other related articles on the PHP Chinese website!

Statement of this Website
The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn

Hot AI Tools

Undresser.AI Undress

Undresser.AI Undress

AI-powered app for creating realistic nude photos

AI Clothes Remover

AI Clothes Remover

Online AI tool for removing clothes from photos.

Undress AI Tool

Undress AI Tool

Undress images for free

Clothoff.io

Clothoff.io

AI clothes remover

Video Face Swap

Video Face Swap

Swap faces in any video effortlessly with our completely free AI face swap tool!

Hot Tools

Notepad++7.3.1

Notepad++7.3.1

Easy-to-use and free code editor

SublimeText3 Chinese version

SublimeText3 Chinese version

Chinese version, very easy to use

Zend Studio 13.0.1

Zend Studio 13.0.1

Powerful PHP integrated development environment

Dreamweaver CS6

Dreamweaver CS6

Visual web development tools

SublimeText3 Mac version

SublimeText3 Mac version

God-level code editing software (SublimeText3)

What to do if the 0x80004005 error code appears. The editor will teach you how to solve the 0x80004005 error code. What to do if the 0x80004005 error code appears. The editor will teach you how to solve the 0x80004005 error code. Mar 21, 2024 pm 09:17 PM

When deleting or decompressing a folder on your computer, sometimes a prompt dialog box "Error 0x80004005: Unspecified Error" will pop up. How should you solve this situation? There are actually many reasons why the error code 0x80004005 is prompted, but most of them are caused by viruses. We can re-register the dll to solve the problem. Below, the editor will explain to you the experience of handling the 0x80004005 error code. Some users are prompted with error code 0X80004005 when using their computers. The 0x80004005 error is mainly caused by the computer not correctly registering certain dynamic link library files, or by a firewall that does not allow HTTPS connections between the computer and the Internet. So how about

How to transfer files from Quark Cloud Disk to Baidu Cloud Disk? How to transfer files from Quark Cloud Disk to Baidu Cloud Disk? Mar 14, 2024 pm 02:07 PM

Quark Netdisk and Baidu Netdisk are currently the most commonly used Netdisk software for storing files. If you want to save the files in Quark Netdisk to Baidu Netdisk, how do you do it? In this issue, the editor has compiled the tutorial steps for transferring files from Quark Network Disk computer to Baidu Network Disk. Let’s take a look at how to operate it. How to save Quark network disk files to Baidu network disk? To transfer files from Quark Network Disk to Baidu Network Disk, you first need to download the required files from Quark Network Disk, then select the target folder in the Baidu Network Disk client and open it. Then, drag and drop the files downloaded from Quark Cloud Disk into the folder opened by the Baidu Cloud Disk client, or use the upload function to add the files to Baidu Cloud Disk. Make sure to check whether the file was successfully transferred in Baidu Cloud Disk after the upload is completed. That's it

What is hiberfil.sys file? Can hiberfil.sys be deleted? What is hiberfil.sys file? Can hiberfil.sys be deleted? Mar 15, 2024 am 09:49 AM

Recently, many netizens have asked the editor, what is the file hiberfil.sys? Can hiberfil.sys take up a lot of C drive space and be deleted? The editor can tell you that the hiberfil.sys file can be deleted. Let’s take a look at the details below. hiberfil.sys is a hidden file in the Windows system and also a system hibernation file. It is usually stored in the root directory of the C drive, and its size is equivalent to the size of the system's installed memory. This file is used when the computer is hibernated and contains the memory data of the current system so that it can be quickly restored to the previous state during recovery. Since its size is equal to the memory capacity, it may take up a larger amount of hard drive space. hiber

Detailed explanation of the role of .ibd files in MySQL and related precautions Detailed explanation of the role of .ibd files in MySQL and related precautions Mar 15, 2024 am 08:00 AM

Detailed explanation of the role of .ibd files in MySQL and related precautions MySQL is a popular relational database management system, and the data in the database is stored in different files. Among them, the .ibd file is a data file in the InnoDB storage engine, used to store data and indexes in tables. This article will provide a detailed analysis of the role of the .ibd file in MySQL and provide relevant code examples to help readers better understand. 1. The role of .ibd files: storing data: .ibd files are InnoDB storage

Detailed explanation of log viewing command in Linux system! Detailed explanation of log viewing command in Linux system! Mar 06, 2024 pm 03:55 PM

In Linux systems, you can use the following command to view the contents of the log file: tail command: The tail command is used to display the content at the end of the log file. It is a common command to view the latest log information. tail [option] [file name] Commonly used options include: -n: Specify the number of lines to be displayed, the default is 10 lines. -f: Monitor the file content in real time and automatically display the new content when the file is updated. Example: tail-n20logfile.txt#Display the last 20 lines of the logfile.txt file tail-flogfile.txt#Monitor the updated content of the logfile.txt file in real time head command: The head command is used to display the beginning of the log file

jQuery Tips: Quickly modify the text of all a tags on the page jQuery Tips: Quickly modify the text of all a tags on the page Feb 28, 2024 pm 09:06 PM

Title: jQuery Tips: Quickly modify the text of all a tags on the page In web development, we often need to modify and operate elements on the page. When using jQuery, sometimes you need to modify the text content of all a tags in the page at once, which can save time and energy. The following will introduce how to use jQuery to quickly modify the text of all a tags on the page, and give specific code examples. First, we need to introduce the jQuery library file and ensure that the following code is introduced into the page: &lt

Create and run Linux ".a" files Create and run Linux ".a" files Mar 20, 2024 pm 04:46 PM

Working with files in the Linux operating system requires the use of various commands and techniques that enable developers to efficiently create and execute files, code, programs, scripts, and other things. In the Linux environment, files with the extension ".a" have great importance as static libraries. These libraries play an important role in software development, allowing developers to efficiently manage and share common functionality across multiple programs. For effective software development in a Linux environment, it is crucial to understand how to create and run ".a" files. This article will introduce how to comprehensively install and configure the Linux ".a" file. Let's explore the definition, purpose, structure, and methods of creating and executing the Linux ".a" file. What is L

Full analysis of Go language file renaming operation Full analysis of Go language file renaming operation Apr 08, 2024 pm 03:30 PM

The os.Rename function is used in Go language to rename files. The syntax is: funcRename(oldpath,newpathstring)error. This function renames the file specified by oldpath to the file specified by newpath. Examples include simple renaming, moving files to different directories, and ignoring error handling. The Rename function performs an atomic operation and may only update directory entries when the two files are in the same directory. Renames may fail across volumes or while a file is in use.

See all articles