js中用数组对一些验证进行简单的封装

<script LANGUAGE="javascript" type="text/javascript"> // // Function: frmValid // ------------------ // Author hongz // Usage: YourForm.οnsubmit="return frmValid(this)". // Purpose: To validate form elements in an integrated way. // function frmValid(obj) { // Elements array, initialization for validation elems = new Array( new Array( 'username', // name of elements to be validated 'value.length<1 || value.search(/[^a-zA-z0-9_]/)>=0', // validation condition '无效的用户名:只能输入6-20位字母、数字、下划线的组合!'), // prompt on failure new Array( 'password', 'value.length<5 || value.search(/[^a-zA-z0-9_]/)>=0', '无效的密码:只能输入6-20位字母、数字、下划线的组合!'), new Array( 'email', 'isMail(value)==false', 'Email是您在网上的重要联络工具,请务必正确填写!') ); // Validate here, using eval statement. for(i = 0; i < elems.length; i++) { with(eval('obj.'+elems[i][0])) { if(eval(elems[i][1])) { window.alert(elems[i][2]); focus(); return false; } } } return true; } //--> </script>