var pattern1 = /好/g;console.log(pattern1.test("你好"));

 字符串查找：

var pattern1 = /\w/;console.log(pattern1.test("njkhjkjk"));

 空格查找：

var pattern1 = /\s/;console.log(pattern1.test("njkhjkjk"));

查找 页面中有几个人字：

var re = "人中人人人人",		rex = /中/g,		ary = rex.exec(re),		i = 0;		while(ary){			i++;			ary = rex.exec(re);		}		 console.log(i);

 

查找“.”后面的文字

var		str = "a.swf",	reg = /\./,	temp = "";	if(reg.test(str)){		temp = RegExp.rightContext;	}	console.log(temp);