数字千分位并四舍五入保留两位小数

function isNumber (val) {return /^[0-9]+.?[0-9]*$/.test(val);}export const numberFormat = (data) => {if (!isNumber(data)) {return '';}let n = Number(data);return n.toLocaleString(undefined, {minimumFractionDigits: 2, maximumFractionDigits: 2 });};