JS字符串与二进制的相互转化

//字符串转ascii码，用charCodeAt();

//ascii码转字符串，用fromCharCode();

var str = "A";

var code = str.charCodeAt();

var str2 = String.fromCharCode(code);

十进制转二进制

var a = "i";

console.log(a.charCodeAt()); //105

console.log(a.charCodeAt().toString(2)); //1101001

var a = "我";

console.log(a.charCodeAt()); //25105

console.log(a.charCodeAt().toString(2)); //110001000010001

var a = "我们";

console.log(a.length); //2

var list = a.split("");

console.log(list.length); //2<br>console.log(a.charCodeAt().toString(2)); //110001000010001 100111011101100

//将字符串转换成二进制形式，中间用空格隔开

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("我们")); //110001000010001 100111011101100

console.log(strToBinary("@%$+")); //1000000 100101 100100 101011

//将二进制字符串转换成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")); //我们

console.log(binaryToStr("1000000 100101 100100 101011")); //@%$+

转载请注明出处：http://www.cnblogs.com/it-deepinmind/

from:https://www.cnblogs.com/it-deepinmind/p/7430025.html

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