js --- 字符串和 二進制 互相轉換

//將字符串轉換成二進制形式，中間用空格隔開
function strToBinary(str){
    var result = [];
    var list = str.split("");
    for(var i=0;i<list.length;i++){
        if(i != 0){
            result.push(" ");
        }
        var item = list[i];
        var binaryStr = item.charCodeAt().toString(2);
        result.push(binartStr);
    }   
    return result.join("");
}
 
console.log(strToBinary("我們")); //110001000010001 100111011101100
console.log(strToBinary("@%$+")); //1000000 100101 100100 101011

 

//將二進制字符串轉換成Unicode字符串
function binaryToStr(str){
    var result = [];
    var list = str.split(" ");
    for(var i=0;i<list.length;i++){
         var item = list[i];
         var asciiCode = parseInt(item,2);
         var charValue = String.fromCharCode(asciiCode);
         result.push(charValue);
    }
    return result.join("");
}
 
console.log(binaryToStr("110001000010001 100111011101100")); //我們
console.log(binaryToStr("1000000 100101 100100 101011")); //@%$+