convert_28_openid_to_38_digital number.js

convert_28_openid_to_38_digital number.js

var str = 'od3P-t1o5NOTl4ketBHZ1kZ0DBio';

function convert(str) {
    if (str.length == 28) {
        var binary = []
        var num = []
        var binary_str
        for (var i = 0; i < str.length; i++) {
            var binStr = str.charCodeAt(i).toString(2).padStart(8, "0"); // 补全为8位数字 ex:01110110
            binary.push(binStr);
        }
        binary_str = binary.join("")+"0000" //补全为 228 = 6x38
		binary_str = binary_str.match(/.{6}/g) // 上面字符每 6个分成一组,总共38组
        for (var j = 0; j < binary_str.length; j++) {
            var dec = parseInt(binary_str[j], 2) //每一组转成10进制
            //console.log(dec)
            num.push(dec % 10)  //取个位数
        }
        return num.join("") //补全最后一位
    }
}

var t = convert(str)
t