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145 lines
2.8 KiB
Markdown
145 lines
2.8 KiB
Markdown
# PasswordInput 密码输入框
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### 介绍
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带网格的输入框组件，可以用于输入支付密码、短信验证码等，通常与[数字键盘](#/zh-CN/number-keyboard)组件配合使用
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### 引入
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```js
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import Vue from 'vue';
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import { PasswordInput, NumberKeyboard } from 'vant';
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Vue.use(PasswordInput);
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Vue.use(NumberKeyboard);
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```
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## 代码演示
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### 基础用法
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```html
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<!-- 密码输入框 -->
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<van-password-input
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:value="value"
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info="密码为 6 位数字"
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:focused="showKeyboard"
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@focus="showKeyboard = true"
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/>
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<!-- 数字键盘 -->
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<van-number-keyboard
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:show="showKeyboard"
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@input="onInput"
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@delete="onDelete"
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@blur="showKeyboard = false"
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/>
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```
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```js
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export default {
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data() {
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return {
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value: '123',
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showKeyboard: true
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};
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},
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methods: {
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onInput(key) {
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this.value = (this.value + key).slice(0, 6);
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},
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onDelete() {
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this.value = this.value.slice(0, this.value.length - 1);
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}
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}
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}
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```
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### 自定义长度
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```html
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<van-password-input
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:value="value"
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:length="4"
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:gutter="15"
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:focused="showKeyboard"
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@focus="showKeyboard = true"
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/>
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```
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### 明文展示
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```html
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<van-password-input
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:value="value"
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:mask="false"
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:focused="showKeyboard"
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@focus="showKeyboard = true"
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/>
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```
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### 错误提示
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通过`error-info`属性可以设置错误提示信息，例如当输入六位时提示密码错误
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```html
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<!-- 密码输入框 -->
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<van-password-input
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:value="value"
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:error-info="errorInfo"
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:focused="showKeyboard"
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@focus="showKeyboard = true"
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/>
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<!-- 数字键盘 -->
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<van-number-keyboard
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:show="showKeyboard"
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@input="onInput"
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@delete="onDelete"
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@blur="showKeyboard = false"
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/>
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```
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```js
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export default {
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data() {
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return {
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value: '123',
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showKeyboard: true,
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errorInfo: ''
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};
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},
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methods: {
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onInput(key) {
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this.value = (this.value + key).slice(0, 6);
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if (this.value.length === 6) {
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this.errorInfo = '密码错误';
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} else {
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this.errorInfo = '';
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}
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},
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onDelete() {
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this.value = this.value.slice(0, this.value.length - 1);
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}
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}
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}
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```
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## API
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### Props
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| 参数 | 说明 | 类型 | 默认值 |
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|------|------|------|------|
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| value | 密码值 | *string* | `''` |
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| info | 输入框下方文字提示 | *string* | - |
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| error-info | 输入框下方错误提示 | *string* | - |
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| length | 密码最大长度 | *number \| string* | `6` |
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| gutter | 输入框格子之间的间距，如 `20px` `2em`，默认单位为`px` | *number \| string* | `0` |
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| mask | 是否隐藏密码内容 | *boolean* | `true` |
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| focused `v2.1.8` | 是否已聚焦，聚焦时会显示光标 | *boolean* | `false` |
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### Events
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| 事件名 | 说明 | 回调参数 |
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|------|------|------|
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| focus | 输入框聚焦时触发 | - |
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