Home > Web Front-end > JS Tutorial > body text

Sample code for dynamically loading and removing js/css files

亚连
Release: 2018-05-25 16:47:57
Original
1657 people have browsed it

This article briefly introduces the sample code for dynamically loading, removing, and replacing js/css files. The code is simple and easy to understand, very good, and has reference loading. Friends who need it can refer to it.

This article briefly introduces the dynamic Load, remove, and replace js/css files. Sometimes when we are writing the front-end, there will be a need to dynamically load some things such as css js. This can reduce the user's loading burden and improve response efficiency. The code is posted below.

 <script language="JavaScript">
//动态加载一个js/css文件
function loadjscssfile(filename, filetype){
if (filetype=="js"){
varfileref=document.createElement(&#39;script&#39;)
fileref.setAttribute("type","text/javascript")
fileref.setAttribute("src",filename)
}
else if (filetype=="css"){
varfileref=document.createElement("link")
fileref.setAttribute("rel","stylesheet")
fileref.setAttribute("type","text/css")
fileref.setAttribute("href",filename)
}
if (typeof fileref!="undefined")
document.getElementsByTagName("head")[0].appendChild(fileref)
}
</script>
Copy after login

Usage example:

loadjscssfile("myscript.js","js")
loadjscssfile("javascript.PHP","js")
loadjscssfile("mystyle.css","css")
<scriptlanguage="javascript">
//移动已经加载过的js/css
function removejscssfile(filename,filetype){
vartargetelement=(filetype=="js")? "script" :(filetype=="css")? "link" : "none"
var targetattr=(filetype=="js")?"src" : (filetype=="css")? "href" :"none"
varallsuspects=document.getElementsByTagName(targetelement)
for (var i=allsuspects.length; i>=0;i--){
if (allsuspects[i] &&allsuspects[i].getAttribute(targetattr)!=null && allsuspects[i].getAttribute(targetattr).indexOf(filename)!=-1)
 allsuspects[i].parentNode.removeChild(allsuspects[i])
}
}
</script>
Copy after login

Usage example:

removejscssfile("somescript.js","js")
removejscssfile("somestyle.css","css")
Copy after login

The above is what I compiled for everyone. I hope it will be helpful to everyone in the future.

Related articles:

Uploading files through Ajax Using FormData for Ajax requests

jQuery Ajax method for uploading files

Use ajax to implement asynchronous refresh request

##

The above is the detailed content of Sample code for dynamically loading and removing js/css files. For more information, please follow other related articles on the PHP Chinese website!

Related labels:
source:php.cn
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
Popular Tutorials
More>
Latest Downloads
More>
Web Effects
Website Source Code
Website Materials
Front End Template