| 123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148149150151152153154155156157158159160161162163164165166167168169170171172173174175176177178179180181182183184185186187188189190191192193194195196197198199200201202203204205206207208209210211212213214215216217218219220221222223224225226227228229230231232233234235236237238239240241242243244245246247248249250251252253254255256257258259260261262263264265266267268269270271272273274275276277278279280281282283284285286287288289290291292293294295296297298299300301302303304305306307308309310311 | <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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