login.js

在线考试功能

function ger_code(code_length) {
var rand_aa="";
var code=new Array("0","1","2","3","4","5","6","7","8","9","A","B","C","D","E","F","G","H","I","J",
"K","L","M","N","O","P","Q","R","S","T","U","V","W","X","Y","Z","a","b","c","d","e","f","g","h",
"i","j","k","l","m","n","o","p","q","r","s","t","u","v","w","x","y","z","!","@","#","$","%","&",
"*","(",")","-","_","|","?","/");
var code_Num=code.length; //数组长度
for(i=0;i<code_length;i++)
   {
     var ran_ss=parseInt(Math.random()*code_Num);
    rand_aa+=String(code[ran_ss]);
   }
document.write("&nbsp;验证码&nbsp;<input type=text name=check_code size="+code_length+" value="+rand_aa+" class=blank_bg maxsize=5 readonly=true>");
}

function subTest(){

var name = document.testForm.userName.value;
var pass = document.testForm.userPassword.value;

var check = document.testForm.checkCode;

if(name.length > 8 || name.length < 2){
        alert("用户名长度必须大于等于2,小于等于8");
        testForm.userName.focus();
        return false;
}else if(isFirst()){
    alert("用户名头字母不能为数字");
    testForm.userName.focus();
    return false;
}
else if(pass.length < 1){
    alert("请输入密码");
    testForm.userPassword.focus();
    return false;
}
else if(check.value != testForm.check_code.value){
        alert("验证码不正确");
        testForm.checkCode.focus();
        return false;
}
    return true;
}




function isFirst(){
    var name = document.testForm.userName.value.split("");
    if(name[0] < "9" && name[0] > "0"){
        return true;
    }
    return false;
}