change(Crontab): 还原原版，不作修改

- 移除了对 this.$options.propsData.check 的冗余判断
- 直接使用 this.$options.propsData.check 初始化 checkNum
- 删除了 created 钩子中对 check 函数的冗余赋值
- 简化了 cycleTotal 和 averageTotal 计算属性中的条件判断

src/components/Crontab/second.vue

@@ -43,7 +43,7 @@ export default {
 			average01: 0,
 			average02: 1,
 			checkboxList: [],
-			checkNum: this.$options && this.$options.propsData && this.$options.propsData.check ? this.$options.propsData.check : (val) => val
+			checkNum: this.$options.propsData.check
 		}
 	},
 	name: 'crontab-second',
@@ -97,14 +97,14 @@ export default {
 	computed: {
 		// 计算两个周期值
 		cycleTotal: function () {
-			const cycle01 = typeof this.checkNum === 'function' ? this.checkNum(this.cycle01, 0, 58) : this.cycle01
-			const cycle02 = typeof this.checkNum === 'function' ? this.checkNum(this.cycle02, cycle01 ? cycle01 + 1 : 1, 59) : this.cycle02
+			const cycle01 = this.checkNum(this.cycle01, 0, 58)
+			const cycle02 = this.checkNum(this.cycle02, cycle01 ? cycle01 + 1 : 1, 59)
 			return cycle01 + '-' + cycle02;
 		},
 		// 计算平均用到的值
 		averageTotal: function () {
-			const average01 = typeof this.checkNum === 'function' ? this.checkNum(this.average01, 0, 58) : this.average01
-			const average02 = typeof this.checkNum === 'function' ? this.checkNum(this.average02, 1, 59 - average01 || 0) : this.average02
+			const average01 = this.checkNum(this.average01, 0, 58)
+			const average02 = this.checkNum(this.average02, 1, 59 - average01 || 0)
 			return average01 + '/' + average02;
 		},
 		// 计算勾选的checkbox值合集
@@ -112,12 +112,6 @@ export default {
 			let str = this.checkboxList.join();
 			return str == '' ? '*' : str;
 		}
-	},
-	created() {
-		// 如果props传入了check函数，就使用props的check函数
-		if (typeof this.check === 'function') {
-			this.checkNum = this.check;
-		}
 	}
 }
 </script>