js去除字符串空格
使用js去除字符串内所带有空格,有以下三种方法:
1. replace正则匹配方法
去除字符串内所有的空格:str = str.replace(/\s*/g,””);
去除字符串内两头的空格:str = str.replace(/^\s*|\s*$/g,””);
去除字符串内左侧的空格:str = str.replace(/^\s*/,””);
去除字符串内右侧的空格:str = str.replace(/(\s*$)/g,””);
示例:
var str = " 6 6 ";
var str_1 = str.replace(/\s*/g,"");
console.log(str_1); //66
var str = " 6 6 ";
var str_1 = str.replace(/^\s*|\s*$/g,"");
console.log(str_1); //6 6//输出左右侧均无空格
var str = " 6 6 ";
var str_1 = str.replace(/^\s*/,"");
console.log(str_1); //6 6 //输出右侧有空格左侧无空格
var str = " 6 6 ";
var str_1 = str.replace(/(\s*$)/g,"");