JS字符串與二進制的相互轉化實例代碼詳解

2019-11-19 11:15:19

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JS字符串與二進制的相互轉化的方法，具體代碼如下所示：

//字符串轉ascii碼，用charCodeAt();//ascii碼轉字符串，用fromCharCode();var str = "A";var code = str.charCodeAt();var str2 = String.fromCharCode(code);

　　十進制轉二進制

var a = "i";console.log(a.charCodeAt()); //105console.log(a.charCodeAt().toString(2)); //1101001var a = "我";console.log(a.charCodeAt()); //25105console.log(a.charCodeAt().toString(2)); //110001000010001 　var a = "我們";console.log(a.length); //2var list = a.split("");console.log(list.length); //2<br>console.log(a.charCodeAt().toString(2)); //110001000010001 100111011101100 　　//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 100111011101100console.log(strToBinary("@%$+")); //1000000 100101 100100 101011//將二進制字符串轉換成Unicode字符串function binaryToStr(str){  var result = [];  var list = str.split(" ");  for(var i=0;i<list.length;i++){     var item = list[i];     var asciiCode = parseInt(item,2);     var charValue = String.fromCharCode(asciiCode);     result.push(charValue);  }  return result.join("");} console.log(binaryToStr("110001000010001 100111011101100")); //我們console.log(binaryToStr("1000000 100101 100100 101011")); //@%$+

PS：下面看下Js之字符串和字節碼之間的相互轉換

代碼

//將字符串轉化為二進制的數據function strToBinary(str){  var result = [];  var list = str.split("");  for(var i=0;i<list.length;i++){    if(i != 0){      //加空格，分割二進制      result.push(" ");    }    var item = list[i];    //將字符串轉化為二進制數據    var binaryStr = item.charCodeAt().toString(2);    result.push(binaryStr);  }    return result.join("");}//二進制轉為字符串function binaryToStr(str){  var result = [];  //  //通過空格來分開二進制的字符  var list = str.split(" ");  for(var i=0;i<list.length;i++){     var item = list[i];     //轉為asciicode 碼     var asciiCode = parseInt(item,2);     //轉為文字     var charValue = String.fromCharCode(asciiCode);     //添加到集合中     result.push(charValue);  }  //返回結果  return result.join("");}

測試結果