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//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);
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十进制转二进制
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var a = "i";
console.log(a.charCodeAt()); //105
console.log(a.charCodeAt().toString(2)); //1101001
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var a = "我";
console.log(a.charCodeAt()); //25105
console.log(a.charCodeAt().toString(2)); //110001000010001
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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
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//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(binaryStr);
}
return result.join("");
}console.log(strToBinary("我们")); //110001000010001 100111011101100
console.log(strToBinary("@%$+")); //1000000 100101 100100 101011
//将二进制字符串转换成Unicode字符串function binaryToStr(str){
var result = [];
var list = str.split(" ");
for(var i=0;i<list.length;i++){
var item = list[i];
var asciiCode = parseInt(item,2);
var charValue = String.fromCharCode(asciiCode);
result.push(charValue);
}
return result.join("");
}console.log(binaryToStr("110001000010001 100111011101100")); //我们
console.log(binaryToStr("1000000 100101 100100 101011")); //@%$+
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const left_pad = (str, len, ch) => {//补全左边
str = str + ‘‘;
len = len - str.length;
if (len <= 0) return str;
if (!ch && ch !== 0) ch = ‘ ‘;
ch = ch + ‘‘;
var pad = ‘‘;
while (true) {
if (len & 1) pad += ch;
len >>= 1;
if (len) ch += ch;
else break;
}
return pad + str;
}
left_pad(‘1011‘, 8, ‘0‘) //00001011
参考出处：http://www.cnblogs.com/it-deepinmind/
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//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);
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十进制转二进制
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var a = "i";
console.log(a.charCodeAt()); //105
console.log(a.charCodeAt().toString(2)); //1101001
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var a = "我";
console.log(a.charCodeAt()); //25105
console.log(a.charCodeAt().toString(2)); //110001000010001
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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
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//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("@%$+")); //1000000 100101 100100 101011
//将二进制字符串转换成Unicode字符串function binaryToStr(str){
var result = [];
var list = str.split(" ");
for(var i=0;i<list.length;i++){
var item = list[i];
var asciiCode = parseInt(item,2);
var charValue = String.fromCharCode(asciiCode);
result.push(charValue);
}
return result.join("");
}console.log(binaryToStr("110001000010001 100111011101100")); //我们
console.log(binaryToStr("1000000 100101 100100 101011")); //@%$+
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