JS
给大家分享一个简单的js验证码生成代码
PS:改代码依赖Jquery1.4版本以上
- 传入元素 如productionVerificationCode(#\((“a”)) 反回验证码的结果,#\)(“a”)元素写入验证码
//----[生成数字加减乘法验证码](传入写入元素,返回验证码计算结果)
function productionVerificationCode(element) {
var code = 9999;
var ranColor = '#' + ('00000' + (Math.random() * 0x1000000 << 0).toString(16)).slice(-6); //随机生成颜色
// alert(ranColor)
var ranColor2 = '#' + ('00000' + (Math.random() * 0x1000000 << 0).toString(16)).slice(-6);
var num1 = Math.floor(Math.random() * 100);
var num2 = Math.floor(Math.random() * 100);
//随机算法
var tmparith = Math.floor(Math.random() * 3);
var $html = "";
switch(tmparith) {
case 1:
code = num1 + num2;
$html = num1 + ' + ' + num2 + ' = ?';
break;
case 2:
if(parseInt(num1) < parseInt(num2)) {
var tmpnum = num1;
num1 = num2;
num2 = tmpnum;
}
code = num1 - num2;
$html = num1 + ' - ' + num2 + ' = ?';
break;
default:
code = num1 * num2;
$html = num1 + ' × ' + num2 + ' = ?';
break;
}
element.val($html); //写入验证码
if(element.hasClass("nocode")) {
element.removeClass("nocode");
element.addClass("code");
}
element.css('background', ranColor);
element.css('color', ranColor2);
return code;
}
//----[END][生成数字加减乘法验证码]