Answers for "es6 check if variable is nuber"

javascript check if number

function isNumber(n) { return /^-?[\d.]+(?:e-?\d+)?$/.test(n); } 

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isNumber('123'); // true  
isNumber('123abc'); // false  
isNumber(5); // true  
isNumber('q345'); // false
isNumber(null); // false
isNumber(undefined); // false
isNumber(false); // false
isNumber('   '); // false

Posted by: Guest on May-21-2020

javascript check if variable is number

function isNumber(n) {
  return !isNaN(parseFloat(n)) && !isNaN(n - 0);
}

Posted by: Guest on May-22-2020

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Answers for "es6 check if variable is nuber"

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Answers for "es6 check if variable is nuber"

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