www.gusucode.com > 凡人网络购物系统 2008源码程序 > Inc/checkmail.js
function checkmail() { if(document.youjian.useremail.value.length!=0) { if (document.youjian.useremail.value.charAt(0)=="." || document.youjian.useremail.value.charAt(0)=="@"|| document.youjian.useremail.value.indexOf('@', 0) == -1 || document.youjian.useremail.value.indexOf('.', 0) == -1 || document.youjian.useremail.value.lastIndexOf("@")==document.youjian.useremail.value.length-1 || document.youjian.useremail.value.lastIndexOf(".")==document.youjian.useremail.value.length-1) { alert("Email地址格式不正确!"); document.youjian.useremail.focus(); return false; } } else { alert("Email不能为空!"); document.youjian.useremail.focus(); return false; } }