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<script> const claPrice = (function(){
const sale = {
"800": (price) => price -= 700, "200": (price) => price -= 100, "10%": (price) => price *= 0.1, } function claPrice(price,type) {
if(!sale[type]) return "没有这个折扣"; return sale[type](price); } claPrice.add = function(type,fn) {
if(sale[type]) return "该折扣已经存在"; sale[type] = fn; return "添加成功"; } claPrice.remove = function(type) {
delete sale[type]; } return claPrice; }()) claPrice.add("20%",(price) => price *= 0.2); claPrice.remove("20%"); console.log(claPrice(1000,"20%")); </script>
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