前端自动生成数字字母组合
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title></title>
</head>
<body>
<input type="" name="" id="prtt" value="" onclick="makeid()"/>
<script src="js/jquery-1.11.0.js" type="text/javascript" charset="utf-8"></script>
<script type="text/javascript">
//自动生成的字数在min-max之间
function randomWord(randomFlag, min, max){
var str = "",
range = min,
arr = ['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'];
// 随机产生
if(randomFlag){
range = Math.round(Math.random() * (max-min)) + min;
}
for(var i=0; i<range; i++){
pos = Math.round(Math.random() * (arr.length-1));
str += arr[pos];
}
return str;
}
console.log(randomWord(true, 5, 9))
$("#prtt").val(randomWord(true, 5, 10));
console.log($("#prtt").val())
//自动生成的字数在5以下
function makeid(){
var text = "";
var possible = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789";
for( var i=0; i < 5; i++ )
text += possible.charAt(Math.floor(Math.random() * possible.length));
return text;
}
console.log(makeid())
</script>
</body>
</html>
