javascript字符操作详细说明

var str1 = 'test string 1';
var str2 = "test string 2";
var str3 = 'it's a string';
var str4 = "this is an 'internal' string";
var str5 = 'this is also an "internal" string';

字符串连接

在js 中要字符连接地址要用到二个操作符+和+ =.哦，下面看实例

var str1 = 'this ' + 'is ' + 'a ' + 'demo!';
var str2 = 'part 1';
str2 += ' and part 2';
var str3 = 'mixed ';
str3 += 'mode ' + 'is possible.';