(JavaScript) 字符串转16进制

function strToBase64() {
    var str = "https://www.baidu.com/";
    var val = "";
    for (var i = 0; i < str.length; i++) {
        if (val == "")
            val = str.charCodeAt(i).toString(16);
        else
            val += "," + str.charCodeAt(i).toString(16);
    }
    console.log(val)
    return val;
}