标签:=== number span math 整数 javascrip mat ring lint
function isNormalInteger(str) { var n = Math.floor(Number(str)); return n !== Infinity && String(n) === str && n > 0; }
标签:=== number span math 整数 javascrip mat ring lint
原文地址:https://www.cnblogs.com/xiaostudy/p/11936907.html