如何为视频标签添加一个空属性？

Question

I just would like to add the 'autobuffer' attribute to my video tag using javascript.

Basically:

var video = document.createElement('video');
video.addAttribute('autoBuffer');

And I'll have:

<video autoBuffer></video>

I tried:

video.setAttribute('autoBuffer'); => <video autoBuffer="undefined"></video>

Which is wrong...

Answer 1

The second parameter to setAttribute must be a string always - currently the undefined you're implicitly passing is converted to one. Use

video.setAttribute('autoBuffer', '');