获取min到max之间的整数（1-100）

        function randomInt(max, min){
            return Math.floor(Math.random() * (max - min) + min);
        }

        console.log(randomInt(100, 1));

获取随机颜色

        function randomInt(max, min){
            return Math.floor(Math.random() * (max - min) + min);
        }

        // console.log(randomInt(100, 1));

        function randomCol(){
            var r = randomInt(0,256), g = randomInt(0,256), b = randomInt(0,256);
            return `rgb(${r}, ${g}, ${b})`;
        }
        console.log(randomCol());

获取随机验证码

        function randomInt(max, min){
            return Math.floor(Math.random() * (max - min) + min);
        }

        function randomCode(){
            var code = '', codeLength = 8, randomCode = [0,1,2,3,4,5,6,7,8,9,'A','B','c'];
            for(var i = 0; i < codeLength; i++){
                var index = randomInt(0, randomCode.length);
                code += randomCode[index];
            }
            return code;
        }
 
        console.log(randomCode());

获取指定字符范围内随机验证码