Question

我在应用程序中使用react-select来显示选择框。下面是我选择的代码。

<Select
       className="custom-form-control mb-2"
       name="organization_options"
       options={this.organizationOptions()}
       placeholder={false}
       onChange={this.handleChange.bind(this)}
       value={selectedValue === "" ? this.organizationOptions()[0] : selectedValue}
/>

下面是我在选择框中已经拥有的选项

0: {value: "62", label: "Dfdf"}
1: {value: "128", label: "Dfdfdsf"}
2: {value: "151", label: "Fgfdgdfh"}
3: {value: "121", label: "Hhhfas"}
4: {value: "55", label: "My Sensor_56"}
5: {value: "13", label: "New Org"}
6: {value: "44", label: "Org 2"}
7: {value: "148", label: "Testing App"}

我有查询字符串中的值，如value =“ 55”，如果存在该值，我想在选择框中显示所选的值。

我尝试了2种不同的方式，如下所示，

1）

selectedValue='55'
defaultValue={this.organizationOptions().find(op => {
   return op.value === selectedValue
})}

2

defaultValue={{value: "55", label: "My Sensor_56"}}

但是没人能用，有人可以告诉我如何设置defaultV 还可以，如果我没有选择值，是否显示默认值？

Answer 1

这里是我们在组织选项中找到的默认值，并将其作为值传递给Select：

import React from 'react';
import Select from 'react-select';

export default class App extends React.Component {
  organizationOptions = () => {
    return [
       {value: "62", label: "Dfdf"},
       {value: "128", label: "Dfdfdsf"},
       {value: "151", label: "Fgfdgdfh"},
       {value: "121", label: "Hhhfas"},
       {value: "55", label: "My Sensor_56"},
       {value: "13", label: "New Org"},
       {value: "44", label: "Org 2"},
      {value: "148", label: "Testing App"}
    ]
  }

  render() {
    const selectedValue = "55"
    return (
      <Select
        value={this.organizationOptions().find(op => {
           return op.value === selectedValue
        })}
        onChange={this.handleChange}
        options={this.organizationOptions()}
      />
    );
  }
}

React-如何在react-select中设置默认值

1 个答案: