Question

How to display the binary format of a value in JavaScript

Answer 1

function toBinFormat(binary_value, n) {
    for (let i = 0; i < 8; i++) {
        binary_value[i] = n & 0x80 ? '1' : '0';
        n <<= 1;
    }
}
 
const value = 7; 
const arr = [0,0,0,0,0,0,0,0];

toBinFormat(arr, value);
 
console.log(value + ' = ' + arr);
 


  
/*
run:
 
"7 = 0,0,0,0,0,1,1,1"
  
*/

 

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Answer 2

function toBinFormat(binary_value, n) {
    return (binary_value >>> 0).toString(2);
}
 
const value = 7; 
 
console.log(toBinFormat(value));
 

  
/*
run:
 
"111"
  
*/

 

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Answer 3

const value = 7; 
 
console.log(value.toString(2));
 
 

  
/*
run:
 
"111"
  
*/

 

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