JavaScript------字符串中各种方法

参考“菜鸟教程”

http://www.runoob.com/js/js-strings.html

1.search()
var s = "Hello World";
alert(s.search(/World/i)); //输出6
//相当于
alert(s.search("World"));

2.replace()
var s = "Hello World";
alert(s.replace(/World/i,"China"));
//相当于
alert(s.replace("World","China"));