问如何通过JavaScript将二进制(输入)转换为字符串(输出)

EN

var bin = 1111;
var dec = parseInt(bin, 2);
var tostr= dec.toString(2)

function pad(n, width, z) {
  z = z || '0';
  n = n + '';
 return n.length >= width ? n : new Array(width - n.length + 1).join(z) + n;
}

var outputString = pad(0010.toString(8),4); // 4 is the length of your output string

 var bin = 1111;
 var str = bin + '';
 console.log(str)

 // Pls try  working perfectly