js修改HTML标签的属性

1、js为设置readOnly属性

  <textarea name="content" id="content" cols="27" rows="6"></textarea>  var cObj = document.getElementById("content");  cObj.setAttribute("readOnly",'true');  cObj.setAttribute("disabled",'true');

2、js移除readOnly属性

 var cObj = document.getElementById("content"); cObj.removeAttribute("readOnly");