add ui

ui/src/components/CountDown/CountDown.vue

@@ -0,0 +1,102 @@
+<template>
+  <span>
+    {{ lastTime | format }}
+  </span>
+</template>
+
+<script>
+
+function fixedZero (val) {
+  return val * 1 < 10 ? `0${val}` : val
+}
+
+export default {
+  name: 'CountDown',
+  props: {
+    format: {
+      type: Function,
+      default: undefined
+    },
+    target: {
+      type: [Date, Number],
+      required: true
+    },
+    onEnd: {
+      type: Function,
+      default: () => ({})
+    }
+  },
+  data () {
+    return {
+      dateTime: '0',
+      originTargetTime: 0,
+      lastTime: 0,
+      timer: 0,
+      interval: 1000
+    }
+  },
+  filters: {
+    format (time) {
+      const hours = 60 * 60 * 1000
+      const minutes = 60 * 1000
+
+      const h = Math.floor(time / hours)
+      const m = Math.floor((time - h * hours) / minutes)
+      const s = Math.floor((time - h * hours - m * minutes) / 1000)
+      return `${fixedZero(h)}:${fixedZero(m)}:${fixedZero(s)}`
+    }
+  },
+  created () {
+    this.initTime()
+    this.tick()
+  },
+  methods: {
+    initTime () {
+      let lastTime = 0
+      let targetTime = 0
+      this.originTargetTime = this.target
+      try {
+        if (Object.prototype.toString.call(this.target) === '[object Date]') {
+          targetTime = this.target
+        } else {
+          targetTime = new Date(this.target).getTime()
+        }
+      } catch (e) {
+        throw new Error('invalid target prop')
+      }
+
+      lastTime = targetTime - new Date().getTime()
+
+      this.lastTime = lastTime < 0 ? 0 : lastTime
+    },
+    tick () {
+      const { onEnd } = this
+
+      this.timer = setTimeout(() => {
+        if (this.lastTime < this.interval) {
+          clearTimeout(this.timer)
+          this.lastTime = 0
+          if (typeof onEnd === 'function') {
+            onEnd()
+          }
+        } else {
+          this.lastTime -= this.interval
+          this.tick()
+        }
+      }, this.interval)
+    }
+  },
+  beforeUpdate () {
+    if (this.originTargetTime !== this.target) {
+      this.initTime()
+    }
+  },
+  beforeDestroy () {
+    clearTimeout(this.timer)
+  }
+}
+</script>
+
+<style scoped>
+
+</style>

ui/src/components/CountDown/index.js

@@ -0,0 +1,3 @@
+import CountDown from './CountDown'
+
+export default CountDown

ui/src/components/CountDown/index.md

@@ -0,0 +1,34 @@
+# CountDown 倒计时
+
+倒计时组件。
+
+
+
+引用方式：
+
+```javascript
+import CountDown from '@/components/CountDown/CountDown'
+
+export default {
+    components: {
+        CountDown
+    }
+}
+```
+
+
+
+## 代码演示  [demo](https://pro.loacg.com/test/home)
+
+```html
+<count-down :target="new Date().getTime() + 3000000" :on-end="onEndHandle" />
+```
+
+
+
+## API
+
+| 参数      | 说明                                      | 类型         | 默认值 |
+|----------|------------------------------------------|-------------|-------|
+| target | 目标时间 | Date | - |
+| onEnd |  倒计时结束回调 | funtion | -|