element plus入门

使用图标

• 案例一
• 参考
• 官网

# 安装
npm install --save @element-plus/icons-vue
 

• 在某子组件中引入并注册为自己的组件，就可以使用图标了

<template>
    <div>
        <el-icon><Avatar /></el-icon>
        <el-icon><Unlock /></el-icon>      
    </div>
</template>
 
<script lang="ts">
import { Avatar, Unlock } from '@element-plus/icons'
export default {
  components: {
    Unlock,
    Avatar
  },
  data() {
    return {
 
    }
  }
}
</script>
 
<style lang="less">
</style>
 

• 案例二
• 参考

# 安装依赖element plus
npm install element-plus@1.0.2-beta.69
# 安装图标依赖
npm install @element-plus/icons
 
<template>
<el-icon :size='20'><check /></el-icon>
</template>
<script lang = "ts" scoped>
// icon
import { Edit, Check, Coffee } from '@element-plus/icons'
export default {
    components: {
        Edit,
        Check, 
        Coffee,
    },
}
</script>
 

表单验证

• 官网
• 案例地址
• vite2 + vue3 + element plus + sass + ts

案例一

• 表单验证

// form使用表单验证
:rules="rules"
 
// 定义验证规则
rules: {
  name: [
    {
      required: true,
      message: 'Please input Activity name',
      trigger: 'blur',
    },
    {
      min: 5,
      max: 10,
      message: 'Length should be 3 to 5',
      trigger: 'blur',
    },
  ],
},
 

• 完整代码

点击查看详情

<template>
  <el-form
    ref="ruleForm"
    :model="ruleForm"
    :rules="rules"
    label-width="120px"
    class="demo-ruleForm"
  >
    <!-- 文本框 -->
    <el-form-item label="Activity name" prop="name">
      <el-input v-model="ruleForm.name"></el-input>
    </el-form-item>
    <!-- 文本域 -->
    <el-form-item label="Activity form" prop="desc">
      <el-input v-model="ruleForm.desc" type="textarea"></el-input>
    </el-form-item>
    <!-- 提交按钮 -->
    <el-form-item>
      <el-button type="primary" @click="submitForm('ruleForm')"
        >Create</el-button
      >
      <!-- 重置按钮 -->
      <el-button @click="resetForm('ruleForm')" class="reset">Reset</el-button>
    </el-form-item>
  </el-form>
</template>
 
<script lang="ts" scoped>
export default {
  data() {
    return {
      ruleForm: {
        name: '',
        desc: '',
      },
      // 验证规则
      rules: {
        name: [
          {
            required: true,
            message: 'Please input Activity name',
            trigger: 'blur',
          },
          {
            min: 5,
            max: 10,
            message: 'Length should be 3 to 5',
            trigger: 'blur',
          },
        ],
      },
    }
  },
  // 提交按钮、重置按钮 的方法
  methods: {
    submitForm(formName) {
      this.$refs[formName].validate((valid) => {
        if (valid) {
          alert('submit!')
        } else {
          console.log('error submit!!')
          return false
        }
      })
    },
    resetForm(formName) {
      this.$refs[formName].resetFields()
    },
  },
}
</script>
 
<style scoped>
.el-form {
   border: 1px gray solid;
   width: 500px;
   height: 220px; 
   margin-top: 30px;
   margin-left: 30px;
   padding-top: 15px;
   padding-right: 25px;
}
.reset{
    margin-left: 20px;
}
</style>
 

案例二

• 自定义验证规则

# form开启验证
:rules="rules"
 
# 自定义验证规则
data() {
  // 回调方法
  const checkAge = (rule, value, callback) => {
    if (!value) {
      return callback(new Error('Please input the age'))
    }
    setTimeout(() => {
      if (!Number.isInteger(value)) {
        callback(new Error('Please input digits'))
      } else {
        if (value < 18) {
          callback(new Error('Age must be greater than 18'))
        } else {
          callback()
        }
      }
    }, 1000)
  }
  const validatePass = (rule, value, callback) => {
    if (value === '') {
      callback(new Error('Please input the password'))
    } else {
      if (this.ruleForm.checkPass !== '') {
        this.$refs.ruleForm.validateField('checkPass')
      }
      callback()
    }
  }
  const validatePass2 = (rule, value, callback) => {
    if (value === '') {
      callback(new Error('Please input the password again'))
    } else if (value !== this.ruleForm.pass) {
      callback(new Error("Two inputs don't match!"))
    } else {
      callback()
    }
  }
  return {
    ruleForm: {
      pass: '',
      checkPass: '',
      age: '',
    },
    // 自定义验证规则，使用回调方法
    rules: {
      pass: [{ validator: validatePass, trigger: 'blur' }],
      checkPass: [{ validator: validatePass2, trigger: 'blur' }],
      age: [{ validator: checkAge, trigger: 'blur' }],
    },
  }
},
 

• 完整代码

点击查看详情

<template>
  <el-form
    ref="ruleForm"
    :model="ruleForm"
    status-icon
    :rules="rules"
    label-width="120px"
    class="demo-ruleForm"
  >
    <!-- 密码框 -->
    <el-form-item label="Password" prop="pass">
      <el-input
        v-model="ruleForm.pass"
        type="password"
        autocomplete="off"
      ></el-input>
    </el-form-item>
    <!-- 确认密码框 -->
    <el-form-item label="Confirm" prop="checkPass">
      <el-input
        v-model="ruleForm.checkPass"
        type="password"
        autocomplete="off"
      ></el-input>
    </el-form-item>
    <!-- 年龄框 -->
    <el-form-item label="Age" prop="age">
      <el-input v-model.number="ruleForm.age"></el-input>
    </el-form-item>
    <el-form-item>
      <!-- 提交按钮 -->
      <el-button type="primary" @click="submitForm('ruleForm')"
        >Submit</el-button
      >
      <!-- 重置按钮 -->
      <el-button @click="resetForm('ruleForm')">Reset</el-button>
    </el-form-item>
  </el-form>
</template>
 
<script lang="ts" scoped>
export default {
  data() {
    // 回调方法
    const checkAge = (rule, value, callback) => {
      if (!value) {
        return callback(new Error('Please input the age'))
      }
      setTimeout(() => {
        if (!Number.isInteger(value)) {
          callback(new Error('Please input digits'))
        } else {
          if (value < 18) {
            callback(new Error('Age must be greater than 18'))
          } else {
            callback()
          }
        }
      }, 1000)
    }
    const validatePass = (rule, value, callback) => {
      if (value === '') {
        callback(new Error('Please input the password'))
      } else {
        if (this.ruleForm.checkPass !== '') {
          this.$refs.ruleForm.validateField('checkPass')
        }
        callback()
      }
    }
    const validatePass2 = (rule, value, callback) => {
      if (value === '') {
        callback(new Error('Please input the password again'))
      } else if (value !== this.ruleForm.pass) {
        callback(new Error("Two inputs don't match!"))
      } else {
        callback()
      }
    }
    return {
      ruleForm: {
        pass: '',
        checkPass: '',
        age: '',
      },
      // 自定义验证规则，使用回调方法
      rules: {
        pass: [{ validator: validatePass, trigger: 'blur' }],
        checkPass: [{ validator: validatePass2, trigger: 'blur' }],
        age: [{ validator: checkAge, trigger: 'blur' }],
      },
    }
  },
  // 提交按钮 重置按钮 的方法
  methods: {
    submitForm(formName) {
      this.$refs[formName].validate((valid) => {
        if (valid) {
          alert('submit!')
        } else {
          console.log('error submit!!')
          return false
        }
      })
    },
    resetForm(formName) {
      this.$refs[formName].resetFields()
    },
  },
}
</script>
 
<style scoped>
.el-form {
    border: 1px gray solid;
    width: 500px;
    height: 300px;
    margin-top: 30px;
    margin-left: 30px;
    padding-top: 15px;
    padding-right: 25px;
}
</style>