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							- <template>
 
- 	<view class="u-char-box">
 
- 		<view class="u-char-flex">
 
- 			<input :disabled="disabledKeyboard" :value="valueModel" type="number" :focus="focus" :maxlength="maxlength" class="u-input" @input="getVal"/>
 
- 			<view v-for="(item, index) in loopCharArr" :key="index">
 
- 				<view :class="[breathe && charArrLength == index ? 'u-breathe' : '', 'u-char-item',
 
- 				charArrLength === index && mode == 'box' ? 'u-box-active' : '',
 
- 				mode === 'box' ? 'u-box' : '']" :style="{
 
- 					fontWeight: bold ? 'bold' : 'normal',
 
- 					fontSize: fontSize + 'rpx',
 
- 					width: width + 'rpx',
 
- 					height: width + 'rpx',
 
- 					color: inactiveColor,
 
- 					borderColor: charArrLength === index && mode == 'box' ? activeColor : inactiveColor
 
- 				}">
 
- 					<view class="u-placeholder-line" :style="{
 
- 							display: charArrLength === index ? 'block' : 'none',
 
- 							height: width * 0.5 +'rpx'
 
- 						}"
 
- 						v-if="mode !== 'middleLine'"
 
- 					></view>
 
- 					<view v-if="mode === 'middleLine' && charArrLength <= index" :class="[breathe && charArrLength == index ? 'u-breathe' : '', charArrLength === index ? 'u-middle-line-active' : '']"
 
- 					 class="u-middle-line" :style="{height: bold ? '4px' : '2px', background: charArrLength === index ? activeColor : inactiveColor}"></view>
 
- 					<view v-if="mode === 'bottomLine'" :class="[breathe && charArrLength == index ? 'u-breathe' : '', charArrLength === index ? 'u-buttom-line-active' : '']"
 
- 					 class="u-bottom-line" :style="{height: bold ? '4px' : '2px', background: charArrLength === index ? activeColor : inactiveColor}"></view>
 
- 					<block v-if="!dotFill"> {{ charArr[index] ? charArr[index] : ''}}</block>
 
- 					<block v-else>
 
- 						<text class="u-dot">{{ charArr[index] ? '●' : ''}}</text>
 
- 					</block>
 
- 				</view>
 
- 			</view>
 
- 		</view>
 
- 	</view>
 
- </template>
 
- <script>
 
- 	/**
 
- 	 * messageInput 验证码输入框
 
- 	 * @description 该组件一般用于验证用户短信验证码的场景,也可以结合uView的键盘组件使用
 
- 	 * @tutorial https://www.uviewui.com/components/messageInput.html
 
- 	 * @property {String Number} maxlength 输入字符个数(默认4)
 
- 	 * @property {Boolean} dot-fill 是否用圆点填充(默认false)
 
- 	 * @property {String} mode 模式选择,见上方"基本使用"说明(默认box)
 
- 	 * @property {String Number} value 预置值
 
- 	 * @property {Boolean} breathe 是否开启呼吸效果,见上方说明(默认true)
 
- 	 * @property {Boolean} focus 是否自动获取焦点(默认false)
 
- 	 * @property {Boolean} bold 字体和输入横线是否加粗(默认true)
 
- 	 * @property {String Number} font-size 字体大小,单位rpx(默认60)
 
- 	 * @property {String} active-color 当前激活输入框的样式(默认#2979ff)
 
- 	 * @property {String} inactive-color 非激活输入框的样式,文字颜色同此值(默认#606266)
 
- 	 * @property {String | Number} width 输入框宽度,单位rpx,高等于宽(默认80)
 
- 	 * @property {Boolean} disabled-keyboard 禁止点击输入框唤起系统键盘(默认false)
 
- 	 * @event {Function} change 输入内容发生改变时触发,具体见官网说明
 
- 	 * @event {Function} finish 输入字符个数达maxlength值时触发,见官网说明
 
- 	 * @example <u-message-input mode="bottomLine"></u-message-input>
 
- 	 */
 
- 	export default {
 
- 		name: "u-message-input",
 
- 		props: {
 
- 			// 最大输入长度
 
- 			maxlength: {
 
- 				type: [Number, String],
 
- 				default: 4
 
- 			},
 
- 			// 是否用圆点填充
 
- 			dotFill: {
 
- 				type: Boolean,
 
- 				default: false
 
- 			},
 
- 			// 显示模式,box-盒子模式,bottomLine-横线在底部模式,middleLine-横线在中部模式
 
- 			mode: {
 
- 				type: String,
 
- 				default: "box"
 
- 			},
 
- 			// 预置值
 
- 			value: {
 
- 				type: [String, Number],
 
- 				default: ''
 
- 			},
 
- 			// 当前激活输入item,是否带有呼吸效果
 
- 			breathe: {
 
- 				type: Boolean,
 
- 				default: true
 
- 			},
 
- 			// 是否自动获取焦点
 
- 			focus: {
 
- 				type: Boolean,
 
- 				default: false
 
- 			},
 
- 			// 字体是否加粗
 
- 			bold: {
 
- 				type: Boolean,
 
- 				default: false
 
- 			},
 
- 			// 字体大小
 
- 			fontSize: {
 
- 				type: [String, Number],
 
- 				default: 60
 
- 			},
 
- 			// 激活样式
 
- 			activeColor: {
 
- 				type: String,
 
- 				default: '#2979ff'
 
- 			},
 
- 			// 未激活的样式
 
- 			inactiveColor: {
 
- 				type: String,
 
- 				default: '#606266'
 
- 			},
 
- 			// 输入框的大小,单位rpx,宽等于高
 
- 			width: {
 
- 				type: [Number, String],
 
- 				default: '80'
 
- 			},
 
- 			// 是否隐藏原生键盘,如果想用自定义键盘的话,需设置此参数为true
 
- 			disabledKeyboard: {
 
- 				type: Boolean,
 
- 				default: false
 
- 			}
 
- 		},
 
- 		watch: {
 
- 			// maxlength: {
 
- 			// 	// 此值设置为true,会在组件加载后无需maxlength变化就会执行一次本监听函数,无需再created生命周期中处理
 
- 			// 	immediate: true,
 
- 			// 	handler(val) {
 
- 			// 		this.maxlength = Number(val);
 
- 			// 	}
 
- 			// }, 
 
- 			value: {
 
- 				immediate: true,
 
- 				handler(val) {
 
- 					// 转为字符串
 
- 					val = String(val);
 
- 					// 超出部分截掉
 
- 					this.valueModel = val.substring(0, this.maxlength);
 
- 				}
 
- 			},
 
- 		},
 
- 		data() {
 
- 			return {
 
- 				valueModel: ""
 
- 			}
 
- 		},
 
- 		computed: {
 
- 			// 是否显示呼吸灯效果
 
- 			animationClass() {
 
- 				return (index) => {
 
- 					if (this.breathe && this.charArr.length == index) return 'u-breathe';
 
- 					else return '';
 
- 				}
 
- 			},
 
- 			// 用于显示字符
 
- 			charArr() {
 
- 				return this.valueModel.split('');
 
- 			},
 
- 			charArrLength() {
 
- 				return this.charArr.length;
 
- 			},
 
- 			// 根据长度,循环输入框的个数,因为头条小程序数值不能用于v-for
 
- 			loopCharArr() {
 
- 				return new Array(this.maxlength);
 
- 			}
 
- 		},
 
- 		methods: {
 
- 			getVal(e) {
 
- 				let {
 
- 					value
 
- 				} = e.detail
 
- 				this.valueModel = value;
 
- 				// 判断长度是否超出了maxlength值,理论上不会发生,因为input组件设置了maxlength属性值
 
- 				if (String(value).length > this.maxlength) return;
 
- 				// 未达到maxlength之前,发送change事件,达到后发送finish事件
 
- 				this.$emit('change', value);
 
- 				if (String(value).length == this.maxlength) {
 
- 					this.$emit('finish', value);
 
- 				}
 
- 			}
 
- 		}
 
- 	}
 
- </script>
 
- <style scoped lang="scss">
 
- 	@import "../../libs/css/style.components.scss";
 
- 	@keyframes breathe {
 
- 		0% {
 
- 			opacity: 0.3;
 
- 		}
 
- 		50% {
 
- 			opacity: 1;
 
- 		}
 
- 		100% {
 
- 			opacity: 0.3;
 
- 		}
 
- 	}
 
- 	.u-char-box {
 
- 		text-align: center;
 
- 	}
 
- 	.u-char-flex {
 
- 		@include vue-flex;
 
- 		justify-content: center;
 
- 		flex-wrap: wrap;
 
- 		position: relative;
 
- 	}
 
- 	.u-input {
 
- 		position: absolute;
 
- 		top: 0;
 
- 		left: -100%;
 
- 		width: 200%;
 
- 		height: 100%;
 
- 		text-align: left;
 
- 		z-index: 9;
 
- 		opacity: 0;
 
- 		background: none;
 
- 	}
 
- 	.u-char-item {
 
- 		position: relative;
 
- 		width: 90rpx;
 
- 		height: 90rpx;
 
- 		margin: 10rpx 10rpx;
 
- 		font-size: 60rpx;
 
- 		font-weight: bold;
 
- 		color: $u-main-color;
 
- 		line-height: 90rpx;
 
- 		@include vue-flex;
 
- 		justify-content: center;
 
- 		align-items: center;
 
- 	}
 
- 	.u-middle-line {
 
- 		border: none;
 
- 	}
 
- 	.u-box {
 
- 		box-sizing: border-box;
 
- 		border: 2rpx solid #cccccc;
 
- 		border-radius: 6rpx;
 
- 	}
 
- 	.u-box-active {
 
- 		overflow: hidden;
 
- 		animation-timing-function: ease-in-out;
 
- 		animation-duration: 1500ms;
 
- 		animation-iteration-count: infinite;
 
- 		animation-direction: alternate;
 
- 		border: 2rpx solid $u-type-primary;
 
- 	}
 
- 	.u-middle-line-active {
 
- 		background: $u-type-primary;
 
- 	}
 
- 	.u-breathe {
 
- 		animation: breathe 2s infinite ease;
 
- 	}
 
- 	.u-placeholder-line {
 
- 		/* #ifndef APP-NVUE */
 
- 		display: none;
 
- 		/* #endif */
 
- 		position: absolute;
 
- 		left: 50%;
 
- 		top: 50%;
 
- 		transform: translate(-50%, -50%);
 
- 		width: 2rpx;
 
- 		height: 40rpx;
 
- 		background: #333333;
 
- 		animation: twinkling 1.5s infinite ease;
 
- 	}
 
- 	.u-animation-breathe {
 
- 		animation-name: breathe;
 
- 	}
 
- 	.u-dot {
 
- 		font-size: 34rpx;
 
- 		line-height: 34rpx;
 
- 	}
 
- 	.u-middle-line {
 
- 		height: 4px;
 
- 		background: #000000;
 
- 		width: 80%;
 
- 		position: absolute;
 
- 		border-radius: 2px;
 
- 		top: 50%;
 
- 		left: 50%;
 
- 		transform: translate(-50%, -50%);
 
- 	}
 
- 	.u-buttom-line-active {
 
- 		background: $u-type-primary;
 
- 	}
 
- 	.u-bottom-line {
 
- 		height: 4px;
 
- 		background: #000000;
 
- 		width: 80%;
 
- 		position: absolute;
 
- 		border-radius: 2px;
 
- 		bottom: 0;
 
- 		left: 50%;
 
- 		transform: translate(-50%);
 
- 	}
 
- </style>
 
 
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