IE6/7/8/9 does not support the abbreviation of exec_javascript skills

As follows

Copy the code The code is as follows:

var ary = /h/('hello') ;
alert(ary);

Error reported in IE6/7/8/9
The latest versions of Firefox/Safari/Chrome/Opera all pop up "h"

The above writing method is equivalent to

Copy the code The code is as follows:

var ary = /h /.exec('hello');

That is, when using the exec method in Firefox/Safari/Chrome/Opera browsers, you can remove "exec" and use "regular direct ()" method use.
IE10 Platform Preview still does not support this abbreviation.

Related:

https://developer.mozilla.org/en/JavaScript/Reference/Global_Objects/RegExp/exec