Question

正则表达式匹配11位或13位数字怎么写

Answer 1

var tel = 18767802354; var reg = /^0?1[3|4|5|8][0-9]\d{8}$/; if (reg.test(tel)) { alert("号码正确~"); }else{ alert("号码有误~"); };

Answer 2

^(\d{11}|\d{13})$