uniapp 自定义组件

先上图我们已抽奖为例:
uniapp 自定义组件

1. 完整代码:

<template>
	<view class="content">

		<view class="base_all_center " style="width: 90vw; height: 90vw; border-radius: 5px;z-index: 10; background-image: url(../../static/img_cj_back.png);
			 background-repeat:no-repeat;background-size: 100% 100%;">
			<view class="base_column" style="width: 80%; height: 80%;">
				<!-- 第一行 -->
				<view class="base_row base_cell">
					<view class="base_all_center base_column cell_child" :style="{'background-color':color_one}">
						<image :src="list_prze[0].prize_img" class="cell_img"></image>
						<text class="cell_text">{{list_prze[0].prize_text}}</text>
					</view>

					<view style="width: 5%; height: 100%;"></view>

					<view class="base_all_center base_column cell_child" :style="{'background-color':color_two}">
						<image :src="list_prze[1].prize_img" class="cell_img"></image>
						<text class="cell_text">{{list_prze[1].prize_text}}</text>
					</view>

					<view style="width: 5%; height: 100%;"></view>

					<view class="base_all_center base_column cell_child" :style="{'background-color':color_three}">
						<image :src="list_prze[2].prize_img" class="cell_img"></image>
						<text class="cell_text">{{list_prze[2].prize_text}}</text>
					</view>
				</view>


				<!-- 第二行 -->
				<view style="width: 100%; height: 5%;"></view>
				<view class="base_row base_cell">
					<view class="base_all_center base_column cell_child" :style="{'background-color':color_eight}">
						<image :src="list_prze[7].prize_img" class="cell_img"></image>
						<text class="cell_text">{{list_prze[7].prize_text}}</text>
					</view>

					<view style="width: 5%; height: 100%;"></view>

					<view class="base_all_center base_column cell_child"
						style="background-color:#FF3A58; border-radius: 5px;" @click="luckDraw()">
						<text style="color: #FFFFFF; font-size: 26px;">抽奖</text>
					</view>

					<view style="width: 5%; height: 100%;"></view>

					<view class="base_all_center base_column cell_child" :style="{'background-color':color_four}">
						<image :src="list_prze[3].prize_img" class="cell_img"></image>
						<text class="cell_text">{{list_prze[3].prize_text}}</text>
					</view>
				</view>

				<!-- 第三行 -->
				<view style="width: 100%; height: 5%;"></view>
				<view class="base_row base_cell">
					<view class="base_all_center base_column cell_child" :style="{'background-color':color_seven}">
						<image :src="list_prze[6].prize_img" class="cell_img"></image>
						<text class="cell_text">{{list_prze[6].prize_text}}</text>
					</view>

					<view style="width: 5%; height: 100%;"></view>

					<view class="base_all_center base_column cell_child" :style="{'background-color':color_six}">
						<image :src="list_prze[5].prize_img" class="cell_img"></image>
						<text class="cell_text">{{list_prze[5].prize_text}}</text>
					</view>

					<view style="width: 5%; height: 100%;"></view>

					<view class="base_all_center base_column cell_child" :style="{'background-color':color_five}">
						<image :src="list_prze[4].prize_img" class="cell_img"></image>
						<text class="cell_text">{{list_prze[4].prize_text}}</text>
					</view>
				</view>
			</view>
		</view>
	</view>
</template>

<script>
	export default {
		name: "MyLuckDraw", // 控件名称
		props: { // 可配置的数据
			// 支持的数据类型
			// String
			// Number
			// Boolean
			// Function
			// Object
			// Array
			// Symbol

			time_once: { // 切换一个所需时间单位ms
				type: Number,
				default: 40
			},

			num_win: { // 中奖号码
				type: Number,
				default: 1
			},

			num_count: { // 一共转动几次
				type: Number,
				default: 7
			},

			is_random: { // 是否随机中间
				type: Boolean,
				default: true
			},

			list_prze: { // 数据
				type: Array
			}
		},

		data() {
			return {
				num_row: 1, // 第几个被选中了
				num_now_count: 0, // 当前转了几次
				num_select_win: 0, // 抽中

				text_prize: '', // 抽中的奖品

				color_no: "#FFFFFF", // 没有选择颜色
				color_yes: "#FF9900", // 选中的颜色

				color_one: "#FF9900",
				color_two: "#FFFFFF",
				color_three: "#FFFFFF",
				color_four: "#FFFFFF",
				color_five: "#FFFFFF",
				color_six: "#FFFFFF",
				color_seven: "#FFFFFF",
				color_eight: "#FFFFFF",
				color_nine: "#FFFFFF",

			}
		},
		onLoad() {

		},
		methods: {
			// 抽奖
			luckDraw() {
				this.num_select_win = this.num_win;

				if (this.num_select_win < 1) { // 中奖号小于1
					return;
				}

				if (this.list_prze.length < 8) { // 没有实物信息
					return;
				}

				this.setPrizeText(); // 设置中奖文字

				this.num_row = 1; // 初始化选中
				this.num_now_count = 0;

				this.startRow();
			},

			// 设置中奖文字
			setPrizeText() {
				if (this.is_random) { // 是否随机中间
					this.num_select_win = 1 + (Math.floor(Math.random() * this.list_prze.length));
				}

				console.log("随机:", this.num_select_win)

				switch (this.num_select_win) {
					case 1:
						this.text_prize = this.list_prze[0].prize_text; // 当前抽中的物品
						break;
					case 2:
						this.text_prize = this.list_prze[1].prize_text; // 当前抽中的物品
						break;
					case 3:
						this.text_prize = this.list_prze[2].prize_text; // 当前抽中的物品
						break;
					case 4:
						this.text_prize = this.list_prze[3].prize_text; // 当前抽中的物品
						break;
					case 5:
						this.text_prize = this.list_prze[4].prize_text; // 当前抽中的物品
						break;
					case 6:
						this.text_prize = this.list_prze[5].prize_text; // 当前抽中的物品
						break;
					case 7:
						this.text_prize = this.list_prze[6].prize_text; // 当前抽中的物品
						break;
					case 8:
						this.text_prize = this.list_prze[7].prize_text; // 当前抽中的物品
						break;
				}
			},

			/**
			 * 开始抽奖
			 */
			startRow() {
				let that = this;
				setTimeout(() => {
					that.selectCell(); // 调用颜色方法
				}, that.time_once);
			},

			/**
			 * 选中cell
			 */
			selectCell(position) {
				this.num_row++; // 当前选中的第几个
				this.num_now_count++; // 当前转了几个
				switch (this.num_row) {
					case 1:
						this.color_one = this.color_yes;
						this.color_two = this.color_no;
						this.color_three = this.color_no;
						this.color_four = this.color_no;
						this.color_five = this.color_no;
						this.color_six = this.color_no;
						this.color_seven = this.color_no;
						this.color_eight = this.color_no;

						break;
					case 2:
						this.color_one = this.color_no;
						this.color_two = this.color_yes;
						this.color_three = this.color_no;
						this.color_four = this.color_no;
						this.color_five = this.color_no;
						this.color_six = this.color_no;
						this.color_seven = this.color_no;
						this.color_eight = this.color_no;

						break;
					case 3:
						this.color_one = this.color_no;
						this.color_two = this.color_no;
						this.color_three = this.color_yes;
						this.color_four = this.color_no;
						this.color_five = this.color_no;
						this.color_six = this.color_no;
						this.color_seven = this.color_no;
						this.color_eight = this.color_no;

						break;
					case 4:
						this.color_one = this.color_no;
						this.color_two = this.color_no;
						this.color_three = this.color_no;
						this.color_four = this.color_yes;
						this.color_five = this.color_no;
						this.color_six = this.color_no;
						this.color_seven = this.color_no;
						this.color_eight = this.color_no;

						break;
					case 5:
						this.color_one = this.color_no;
						this.color_two = this.color_no;
						this.color_three = this.color_no;
						this.color_four = this.color_no;
						this.color_five = this.color_yes;
						this.color_six = this.color_no;
						this.color_seven = this.color_no;
						this.color_eight = this.color_no;

						break;
					case 6:
						this.color_one = this.color_no;
						this.color_two = this.color_no;
						this.color_three = this.color_no;
						this.color_four = this.color_no;
						this.color_five = this.color_no;
						this.color_six = this.color_yes;
						this.color_seven = this.color_no;
						this.color_eight = this.color_no;

						break;
					case 7:
						this.color_one = this.color_no;
						this.color_two = this.color_no;
						this.color_three = this.color_no;
						this.color_four = this.color_no;
						this.color_five = this.color_no;
						this.color_six = this.color_no;
						this.color_seven = this.color_yes;
						this.color_eight = this.color_no;

						break;
					case 8:
						this.color_one = this.color_no;
						this.color_two = this.color_no;
						this.color_three = this.color_no;
						this.color_four = this.color_no;
						this.color_five = this.color_no;
						this.color_six = this.color_no;
						this.color_seven = this.color_no;
						this.color_eight = this.color_yes;

						this.num_row = 0;
						break;
					default:
						this.num_row = 0;
						break;
				}

				if (this.num_now_count < (this.num_count * 8) + (this.num_select_win - 1)) { // 一共转动7次
					this.startRow(); // 再次调用抽奖
				} else {
					console.log("执行了")
					this.onSuccess();
				}

			},

			// 抽奖成功
			onSuccess() {
				this.$emit("MySuccess", {
					"data": this.text_prize
				})
			},
		}
	}
</script>

<style>
	.content {
		display: flex;
		flex-direction: column;
		align-items: center;
		justify-content: center;
	}

	/* 水平,垂直居中 */
	.base_all_center {
		display: flex;
		justify-content: center;
		align-items: center;
	}

	/* 垂直居中 */
	.base_center_vertical {
		display: flex;
		align-items: center;
	}

	/* 水平居中 */
	.base_center_horizontal {
		display: flex;
		justify-content: center;
	}

	/* 垂直布局 */
	.base_column {
		display: flex;
		flex-direction: column;
	}

	/* 横向布局 */
	.base_row {
		display: flex;
		flex-direction: row;
	}

	/* ******************************* */
	/* 一行cell */
	.base_cell {
		width: 100%;
		height: 30%;
	}

	/* 单个cell */
	.cell_child {
		width: 30%;
		height: 100%;
		border-radius: 5px;
	}

	/* cell 文字 */
	.cell_text {
		font-size: 12px;
		color: #000000;
	}

	/* cell图片 */
	.cell_img {
		width: 60%;
		height: 60%;
		border-radius: 3px;
	}
</style>

使用方法

	<MyLuckDraw :num_win="num_win" :list_prze="list_prize" @MySuccess="f_MySuccess" >
	</MyLuckDraw>

	<view v-if="is_dialog_show" class="base_dialog base_all_center" @click="closeDialog()">

		<view class="base_all_center"
			style="width: 75%; height: 40%; background-color: #FFFFFF; border-radius: 10px;">
			<text style="font-size: 20px; color: #000000;">您抽中了:{{text_prize}}</text>
		</view>

	</view>
</view>

完整的代码已经给出了。接下来就是分析了。

1.封装控件需要:暴露名称,提供参数,增加事件(只有第一个也可以)如图所示:

uniapp 自定义组件
props中支持的参数类型有: String ; Number ; Boolean ; Function ; Object ; Array ; Symbol这几种。
下面是具体的参数类型:type 是数据类型,default 是默认值,如果不需要可省略defalut。

控件中的事件传递

例如抽奖结束了需要返回抽中的信息,就需要在控件中定义了,如下图所示:
uniapp 自定义组件
如果没有返回值可以不写{}中的内容。

如何使用组件?

1.导入控件;2使用组件
uniapp 自定义组件
做完这两步,就可以在页面中随意使用该组件了:
图中标的已经很清楚了,这里不再赘述了。
uniapp 自定义组件
当组件MyLuckDraw中的onSuccess()方法执行后,index.vue 绑定的f_MySuccess()方法便会执行。
uniapp 自定义组件

看不懂的话,就跟着敲一遍就行了,一遍不行再来一遍~
完结,撒花~

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