js生成批次号_js生成验证码
#code
{
font-family:Arial;
font-style:italic;
font-weight:bold;
border:0;
letter-spacing:2px;
color:blue;
}
var code ;
window.onload = function createCode(){
code = "";
var codeLength = 4;
var checkCode = document.getElementById("code");
var random = 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');
for(var i = 0; i < codeLength; i++) {
var index = Math.floor(Math.random()*36);
code += random[index];
}
checkCode.value = code;
}
function validate(){
var inputCode = document.getElementById("input").value.toUpperCase();
if(inputCode.length <= 0) {
alert("請輸入驗證碼!");
}
else if(inputCode != code ) {
alert("驗證碼輸入錯誤!@_@");
createCode();
document.getElementById("input").value = "";
}
else {
alert("^-^");
}
}
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