文本选择问题： css & js

CSS:

 /*Disable browser selection*/
 .disableselect
 {
     -webkit-user-select: none;
     -moz-user-select: none;
     user-select: none;
     -ms-user-select:none;
     -webkit-touch-callout:none;
     -webkit-tap-highlight-color: rgba(0,0,0,0);
 }
 .enableselect {
     -webkit-user-select: text;
     -moz-user-select: text;
     -ms-user-select:text;
     user-select:all;
 }

JS:

 var clearSlct= "getSelection" in window ? function(){
  window.getSelection().removeAllRanges();
 } : function(){
  document.selection.empty();
 };