JavaScript: Convert a binary number to a decimal number
JavaScript Math: Exercise-2 with Solution
Write a JavaScript function to convert a binary number to a decimal number.
Test Data: console.log(bin_to_dec('110011')); console.log(bin_to_dec('100')); 51 4
Pictorial Presentation:
Sample Solution:-
HTML Code:
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>Binary number to a decimal number</title>
</head>
<body>
</body>
</html>
JavaScript Code:
function bin_to_dec(bstr) {
return parseInt((bstr + '')
.replace(/[^01]/gi, ''), 2);
}
console.log(bin_to_dec('110011'));
console.log(bin_to_dec('100'));
Sample Output:
51 4
Flowchart:

Live Demo:
See the Pen javascript-math-exercise-2 by w3resource (@w3resource) on CodePen.
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Next: Write a JavaScript function to convert a decimal number to binary, hexadecimal or octal number.
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JavaScript: Tips of the Day
Returns the symmetric difference between two arrays, after applying the provided function to each array element of both
Example:
const tips_symmetricDifference = (x, y, fn) => { const sA = new Set(x.map(v => fn(v))), sB = new Set(y.map(v => fn(v))); return [...x.filter(x => !sB.has(fn(x))), ...y.filter(x => !sA.has(fn(x)))]; }; console.log(tips_symmetricDifference([3.5, 5.5], [5.5, 7.5], Math.floor));
Output:
[3.5, 7.5]
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