公司项目开发时,有一个需求,需要对输入的字符串按回车分隔并验证是否有重复项,效果如下:
表单代码:
html
<el-form-item label="IP地址条目:" prop="ipAddressEntry">
<el-input
type="textarea"
v-model="formData.ipAddressEntry"
:rows="5"
></el-input>
</el-form-item>
表单验证代码:
javascript
data() {
let isRepeat = (rule, value, callback) => {
if (this.formData.ipAddressEntry != ''){
const arr = this.formData.ipAddressEntry.split('\n');
const set = new Set(arr);
if (arr.length === set.size) {
callback()
} else {
callback('输入IP地址重复')
}
}
}
return{
rules: {
ipAddressEntry: [
{
required: true,
message: '请填写',
trigger: 'blur',
},
{ trigger: 'blur', validator: isRepeat },
],
}
}
}