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@fupslot
Created June 16, 2016 14:30
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function safeParse(n) {
n = +n;
if (isNaN(n)) throw new TypeError('NANUMERR');
if (0 > n) throw new TypeError('NEGNUMERR');
return n
}
function safeFixed(n) {
return (safeParse(n)).toFixed('2');
}
try {
console.log(safeFixed(3));
console.log(safeFixed(-3.12));
console.log(safeFixed('-3.4'));
console.log(safeFixed(3.987643));
// console.log(safeParseFloat(-3.4));
// console.log(safeParseFloat('-3.4'));
// console.log(safeParseFloat('-3,4'));
// console.log(safeParseFloat('-3b4'));
// console.log(safeParseFloat('#3b4'));
console.log(safeFixed('#3b4'));
} catch (ex) {
console.log(ex.message);
}
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