# 10 examples of 'how to square a number in javascript' in JavaScript

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``17function square(value) {18    return value * value;19}``
``160function square(n) {161    return n*n;162}``
``213function sq ( num ) {214	return num * num;215}``
``18function squareDigits(num){19  return +num.toString().split('').map(digit =&gt; Math.pow(digit, 2)).join('');20}``
``3function double(number) {4  const result = 2 * number5  return result6}``
``31function square(a) {32  return a * a;33}``
``107function two(num) {108  if (num &lt; 10)109    return '0' + num;110  else111    return num;112}``
``558function to_number(a) {559  try {560    a = round(a);561    if (a &lt; 0) {562      return 0563    }564    if (!a) {565      a = 0566    }567  } catch (b) {568    a = 0569  }570  return a571}``
``27function isSquare(n) {28  if (n === 0 || n === 1) return true;29  for (let i = 0; i &lt;= n / 2; i++) {30    const valueSquared = i ** 2;31    if (valueSquared === n) {32      return true33    } else if (valueSquared &gt; n) {34      return false;35    }36  }37  return false;38}``
``1function singleNumber(nums){2    let length = nums.length3    let res = 04    for(let i =0;i``