Comments (7)
function isNumeric(str) {
if (str === '') return false;
const specialStr = ['Infinity', 'undefined', 'null'];
if (specialStr.some(s => str.indexOf(s) !== -1)) return false;
const n = Number(str)
return n === n;
}
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function isNumeric(str) {
if (typeof str !== 'string' || str === '') {
return false;
}
const num = Number(str);
return num < Infinity && num > -Infinity;
}
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function isNumeric(obj) {
return !isNaN(parseFloat(obj)) && isFinite(obj);
}
function isNumeric(str) {
if (str === '' || str == null) return false;
const num = Number(str);
return num < Infinity && num > -Infinity;
}
from fe-interview.
function isNumeric(obj) { return !isNaN(parseFloat(obj)) && isFinite(obj); } function isNumeric(str) { if (str === '' || str == null) return false; const num = Number(str); return num < Infinity && num > -Infinity; }
快来认领啦
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认领 ̄□ ̄||
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认领 ̄□ ̄||
done 你在群里么?加个微信方便交流
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function isNumberic (str) {
str = str ? Number(str) : Number("str");
return !isNaN(str);
};
from fe-interview.
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