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863天前<script language="javascript" type="text/javascript"> |
createCode(); |
var code; //在全局 定义验证码 |
function createCode() { |
code = ""; |
var codeLength = 4;//验证码的长度 |
var checkCode = document.getElementById("checkCode"); |
var selectChar = 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');//所有候选组成验证码的字符 |
|
for (var i = 0; i < codeLength; i++) { |
var charIndex = Math.floor(Math.random() * 36); |
code += selectChar[charIndex]; |
} |
|
if (checkCode) { |
checkCode.className = "code"; |
checkCode.value = code; |
} |
} |
|
function validate() { |
var inputCode = document.getElementById("input1").value; |
if (inputCode.length <= 0) { |
alert("请输入验证码！"); |
createCode();//刷新验证码 |
} else if (inputCode != code) { |
alert("验证码输入错误！"); |
createCode();//刷新验证码 |
} else { |
gosubmit(); |
} |
} |
</script> |
