How to create or add CSS style sheets dynamically using JavaScript _javascript tips

1, the simple method, regardless, directly this can be:

Document.createstylesheet (). Csstext = ' tag {color:red; ' +
    //This comment only helps to understand in current JS and will not be written in CSS
    ' width:300px;height : 150px} ' +
    '. Class name {...} ' +
    ' #ID们 {...} '
;

Finish the job. I like the semicolon to write, and it's better to align it with the beginning of the instruction, especially when there are other statements behind it.

2, a better way to prevent repeated additions, you can add a Stylesheet ID and judge it to achieve:

if (!document.stylesheets[' to create a style sheet ID such as Theforever ']) {//first check to see if the style sheet ID you want to establish exists to prevent the repeated addition of the
 var ss = Document.createstylesheet ();
 Ss.owningElement.id = ' to be established style sheet ID such as Theforever ';
 Ss.csstext = ' Tag {display:inline-block;overflow:hidden ' +
  //This annotation only helps understand in current JS, and will not be written into CSS
  ' text-align:left; width:300px;height:150px} ' +
  '. Class name {...} ' +
  ' #ID们 {...} '
 ;
 }

The above article with JavaScript dynamic build or add CSS style sheet implementation method is small set to share all the content, hope to give you a reference, also hope that we support cloud habitat community.