var numberFormat = function (value) { var param = {}; var k = 10000, sizes = ['', '万', '亿', '万亿'], i; if(value < k){ param.value =value param.unit='' }else{ i = Math.floor(Math.log(value) / Math.log(k)); param.value = ((value / Math.pow(k, i))).toFixed(2); param.unit = sizes[i]; } return param; } console.log(numberFormat(15222256.33))