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Home Web Front-end JS Tutorial How to dynamically operate js/css files

How to dynamically operate js/css files

Jun 15, 2018 am 11:24 AM
css file js load Remove

This time I will show you how to dynamically operate js/css files, and what are the precautions for dynamically operating js/css files. The following is a practical case, let's take a look.

?<script language="JavaScript">
//動態(tài)加載一個(gè)js/css文件
function?loadjscssfile(filename,?filetype){
if?(filetype=="js"){
varfileref=document.createElement('script')
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>

Usage example:

loadjscssfile("myscript.js","js")
loadjscssfile("javascript.PHP","js")
loadjscssfile("mystyle.css","css")
<scriptlanguage="javascript">
//移動已經(jīng)加載過的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>

Usage example:

removejscssfile("somescript.js","js")
removejscssfile("somestyle.css","css")

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:

How to operate vue code specification detection

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The above is the detailed content of How to dynamically operate js/css files. For more information, please follow other related articles on the PHP Chinese website!

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