<!doctype html><html lang="en"> <head> ?<meta charset="UTF-8"> ?<title>Document</title> </head> <body> ?<script> ???????function testReg(){ ???????????var regExp = /^\d{2,6}$/g; ???????????var input = prompt("请输入2-6位的数字:"); ???????????if(regExp.test(input)){ ???????????????alert("格式正确"); ???????????}else{ ???????????????alert("格式错误"); ???????????} ???????} ???</script> ???<button onclick="testReg()">测试正则表达式</button> </body></html>JS-regExp-正则表达式匹配2-6的数字
原文地址：https://www.cnblogs.com/-hjj/p/9943324.html