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pagesCreateOrder/index/util.js

@@ -0,0 +1,52 @@
+//判断商品是否可以下单
+export function isCanBuy(goods,isStock) {
+    return goods.isGrounding && goods.isPauseSale == 0 && (isStock?goods.stockNumber > 0:true) ;
+}
+
+
+// 一个数组是否包含另外一个数组全部元素
+function arrayContainsAll(arr1, arr2) {
+  for (let i = 0; i < arr2.length; i++) {
+    if (!arr1.includes(arr2[i])) {
+      return false;
+    }
+  }
+  return true;
+}
+
+//n项 n-1项组合，生成全部结果
+function generateCombinations(arr, k) {
+  let result = [];
+
+  function helper(index, current) {
+    if (current.length === k) {
+      result.push(current.slice()); // 使用slice()来避免直接修改原始数组
+    } else {
+      for (let i = index; i < arr.length; i++) {
+        current.push(arr[i]); // 将当前元素添加到组合中
+        helper(i + 1, current); // 递归调用，索引增加以避免重复选择相同的元素
+        current.pop(); // 回溯，移除当前元素以便尝试其他组合
+      }
+    }
+  }
+
+  helper(0, []); // 从索引0开始，初始空数组作为起点
+  return result;
+}
+
+function returnReverseVal(val, isReturnString = true) {
+  const isBol = typeof val === "boolean";
+  const isString = typeof val === "string";
+  let reverseNewval = "";
+  if (isBol) {
+    reverseNewval = !val;
+  }
+  if (isString) {
+    reverseNewval = val === "true" ? "false" : "true";
+  }
+  return reverseNewval;
+}
+
+export default{
+	isCanBuy,arrayContainsAll,generateCombinations,returnReverseVal
+}