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252 lines
7.3 KiB
252 lines
7.3 KiB
<template> |
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<view class="u-code-input"> |
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<view |
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class="u-code-input__item" |
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:style="[itemStyle(index)]" |
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v-for="(item, index) in codeLength" |
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:key="index" |
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> |
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<view |
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class="u-code-input__item__dot" |
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v-if="dot && codeArray.length > index" |
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></view> |
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<text |
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v-else |
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:style="{ |
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fontSize: $u.addUnit(fontSize), |
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fontWeight: bold ? 'bold' : 'normal', |
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color: color |
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}" |
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>{{codeArray[index]}}</text> |
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<view |
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class="u-code-input__item__line" |
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v-if="mode === 'line'" |
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:style="[lineStyle]" |
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></view> |
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<!-- #ifndef APP-PLUS --> |
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<view v-if="isFocus && codeArray.length === index" :style="{backgroundColor: color}" class="u-code-input__item__cursor"></view> |
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<!-- #endif --> |
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</view> |
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<input |
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:disabled="disabledKeyboard" |
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type="number" |
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:focus="focus" |
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:value="inputValue" |
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:maxlength="maxlength" |
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:adjustPosition="adjustPosition" |
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class="u-code-input__input" |
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@input="inputHandler" |
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:style="{ |
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height: $u.addUnit(size) |
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}" |
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@focus="isFocus = true" |
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@blur="isFocus = false" |
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/> |
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</view> |
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</template> |
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<script> |
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import props from './props.js'; |
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/** |
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* CodeInput 验证码输入 |
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* @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 |
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* @tutorial https://www.uviewui.com/components/codeInput.html |
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* @property {String | Number} maxlength 最大输入长度 (默认 6 ) |
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* @property {Boolean} dot 是否用圆点填充 (默认 false ) |
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* @property {String} mode 显示模式,box-盒子模式,line-底部横线模式 (默认 'box' ) |
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* @property {Boolean} hairline 是否细边框 (默认 false ) |
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* @property {String | Number} space 字符间的距离 (默认 10 ) |
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* @property {String | Number} value 预置值 |
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* @property {Boolean} focus 是否自动获取焦点 (默认 false ) |
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* @property {Boolean} bold 字体和输入横线是否加粗 (默认 false ) |
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* @property {String} color 字体颜色 (默认 '#606266' ) |
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* @property {String | Number} fontSize 字体大小,单位px (默认 18 ) |
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* @property {String | Number} size 输入框的大小,宽等于高 (默认 35 ) |
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* @property {Boolean} disabledKeyboard 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 (默认 false ) |
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* @property {String} borderColor 边框和线条颜色 (默认 '#c9cacc' ) |
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* @property {Boolean} disabledDot 是否禁止输入"."符号 (默认 true ) |
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* |
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* @event {Function} change 输入内容发生改变时触发,具体见上方说明 value:当前输入的值 |
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* @event {Function} finish 输入字符个数达maxlength值时触发,见上方说明 value:当前输入的值 |
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* @example <u-code-input v-model="value4" :focus="true"></u-code-input> |
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*/ |
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export default { |
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name: 'u-code-input', |
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mixins: [uni.$u.mpMixin, uni.$u.mixin, props], |
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data() { |
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return { |
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inputValue: '', |
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isFocus: this.focus |
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} |
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}, |
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watch: { |
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value: { |
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immediate: true, |
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handler(val) { |
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// 转为字符串,超出部分截掉 |
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this.inputValue = String(val).substring(0, this.maxlength) |
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} |
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}, |
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}, |
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computed: { |
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// 根据长度,循环输入框的个数,因为头条小程序数值不能用于v-for |
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codeLength() { |
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return new Array(Number(this.maxlength)) |
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}, |
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// 循环item的样式 |
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itemStyle() { |
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return index => { |
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const addUnit = uni.$u.addUnit |
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const style = { |
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width: addUnit(this.size), |
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height: addUnit(this.size) |
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} |
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// 盒子模式下,需要额外进行处理 |
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if (this.mode === 'box') { |
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// 设置盒子的边框,如果是细边框,则设置为0.5px宽度 |
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style.border = `${this.hairline ? 0.5 : 1}px solid ${this.borderColor}` |
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// 如果盒子间距为0的话 |
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if (uni.$u.getPx(this.space) === 0) { |
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// 给第一和最后一个盒子设置圆角 |
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if (index === 0) { |
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style.borderTopLeftRadius = '3px' |
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style.borderBottomLeftRadius = '3px' |
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} |
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if (index === this.codeLength.length - 1) { |
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style.borderTopRightRadius = '3px' |
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style.borderBottomRightRadius = '3px' |
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} |
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// 最后一个盒子的右边框需要保留 |
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if (index !== this.codeLength.length - 1) { |
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style.borderRight = 'none' |
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} |
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} |
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} |
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if (index !== this.codeLength.length - 1) { |
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// 设置验证码字符之间的距离,通过margin-right设置,最后一个字符,无需右边框 |
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style.marginRight = addUnit(this.space) |
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} else { |
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// 最后一个盒子的有边框需要保留 |
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style.marginRight = 0 |
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} |
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return style |
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} |
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}, |
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// 将输入的值,转为数组,给item历遍时,根据当前的索引显示数组的元素 |
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codeArray() { |
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return String(this.inputValue).split('') |
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}, |
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// 下划线模式下,横线的样式 |
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lineStyle() { |
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const style = {} |
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style.height = this.hairline ? '2px' : '4px' |
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style.width = uni.$u.addUnit(this.size) |
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// 线条模式下,背景色即为边框颜色 |
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style.backgroundColor = this.borderColor |
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return style |
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} |
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}, |
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methods: { |
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// 监听输入框的值发生变化 |
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inputHandler(e) { |
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const value = e.detail.value |
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this.inputValue = value |
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// 是否允许输入“.”符号 |
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if(this.disabledDot) { |
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this.$nextTick(() => { |
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this.inputValue = value.replace('.', '') |
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}) |
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} |
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// 未达到maxlength之前,发送change事件,达到后发送finish事件 |
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this.$emit('change', value) |
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// 修改通过v-model双向绑定的值 |
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this.$emit('input', value) |
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// 达到用户指定输入长度时,发出完成事件 |
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if (String(value).length >= Number(this.maxlength)) { |
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this.$emit('finish', value) |
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} |
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} |
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} |
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} |
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</script> |
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<style lang="scss" scoped> |
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@import "../../libs/css/components.scss"; |
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$u-code-input-cursor-width: 1px; |
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$u-code-input-cursor-height: 40%; |
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$u-code-input-cursor-animation-duration: 1s; |
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$u-code-input-cursor-animation-name: u-cursor-flicker; |
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.u-code-input { |
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@include flex; |
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position: relative; |
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overflow: hidden; |
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&__item { |
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@include flex; |
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justify-content: center; |
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align-items: center; |
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position: relative; |
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&__text { |
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font-size: 15px; |
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color: $u-content-color; |
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} |
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&__dot { |
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width: 7px; |
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height: 7px; |
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border-radius: 100px; |
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background-color: $u-content-color; |
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} |
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&__line { |
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position: absolute; |
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bottom: 0; |
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height: 4px; |
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border-radius: 100px; |
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width: 40px; |
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background-color: $u-content-color; |
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} |
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/* #ifndef APP-PLUS */ |
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&__cursor { |
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position: absolute; |
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top: 50%; |
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left: 50%; |
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transform: translate(-50%,-50%); |
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width: $u-code-input-cursor-width; |
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height: $u-code-input-cursor-height; |
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animation: $u-code-input-cursor-animation-duration u-cursor-flicker infinite; |
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} |
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/* #endif */ |
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} |
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&__input { |
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// 之所以需要input输入框,是因为有它才能唤起键盘 |
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// 这里将它设置为两倍的屏幕宽度,再将左边的一半移出屏幕,为了不让用户看到输入的内容 |
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position: absolute; |
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left: -750rpx; |
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width: 1500rpx; |
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top: 0; |
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background-color: transparent; |
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text-align: left; |
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} |
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} |
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/* #ifndef APP-PLUS */ |
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@keyframes u-cursor-flicker { |
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0% { |
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opacity: 0; |
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} |
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50% { |
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opacity: 1; |
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} |
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100% { |
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opacity: 0; |
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} |
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} |
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/* #endif */ |
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</style>
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