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JavaScript JavaScript Functions Arrow Functions Testing for Number Arguments

nasser mohammed
nasser mohammed
12,193 Points

Testing for Number Arguments Pass a string argument

Hi. When I pass a string argument like '10', the function not work well, either when I did the testing.

const getRandom = (lower, upper) => { if (isNaN(lower) || isNaN(upper)) { document.querySelector('main').innerHTML = <h2>The 2 values should be numbers</h2>; } else { const random = Math.floor(Math.random() * (upper - lower + 1)) + lower; const main = document.querySelector('main').innerHTML = <h2>${random} is a random number between ${lower} and ${upper}<h2>; return main; } };

getRandom('10',40);

the result is: 310 is a random number between 10 and 40