Answers for "how to check for a number and not an integer javascript"

18

javascript is number an integer

Number.isInteger(value)

//returns a Boolean
Posted by: Guest on January-18-2020
0

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

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