方法一、利用数组splice，split，join方法
var tel = 18810399133
;
tel = "" +
tel;
var ary = tel.split(""
);
ary.splice(3,4,"****"
);
var tel1=ary.join(""
);
console.log(tel1);
方法二、利用字符串的substr方法
var tel = 18810399133
;
tel = "" +
tel;
var tel1 = tel.substr(0,3) + "****" + tel.substr(7
)
console.log(tel1);
方法三、利用字符串substring方法
var tel = 18810399133
;
tel = "" +
tel;
var tel1 =tel.replace(tel.substring(3,7), "****"
)
console.log(tel1);
方法四、利用正则
var tel = 18810399133
;
tel = "" +
tel;
var reg=/(\d{3})\d{4}(\d{4})/
;
var tel1 = tel.replace(reg, "$1****$2"
)
console.log(tel1);
转载于:https://www.cnblogs.com/chengkun101/p/7879522.html
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