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JavaScript program to take in a binary number as a string and returns its numerical equivalent in base 10
We are required to write a JavaScript function that takes in a binary number as a string and returns its numerical equivalent in base 10. Therefore, let’s write the code for the function.
This one is quite simple, we iterate over the string using a for loop and for each passing bit, we double the number with adding the current bit value to it like this −
Example
const binaryToDecimal = binaryStr => {
let num = 0;
for(let i = 0; i < binaryStr.length; i++){
num *= 2;
num += Number(binaryStr[i]);
};
return num;
};
console.log(binaryToDecimal('1101'));
console.log(binaryToDecimal('1101000'));
console.log(binaryToDecimal('10101'));Output
The output in the console will be −
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Updated on: 24-Aug-2020
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