Question

在我的react网站上，我想获取下拉列表的值并存储选择的值，即如果用户选择Admin value = 1则存储在数据库中。我该怎么办？

   <div className="col-lg-12">
    <select className="form-control" name="roleId" value={this.state.roleId} onChange={this.handleChange} id="sel" style={{ marginTop: "35px" }} required>
     <option> Role</option>
     <option value="1">Admin</option>
     <option value="2">Teacher</option>
     <option value="3">TeamLead</option>
    </select>
   </div>

以下是我的功能

    handleChange = (event: any) => {
    this.setState({ [event.target.name]: event.target.value }, () => this.validateName())
}
    handleSubmit(event: any) {
    event.preventDefault();
    const { password, confirmPassword, name } = this.state
        if (password !== confirmPassword) {
            alert('passwords do not match')

        }
        else {
            axios.post('https://localhost:44310/api/Users/', this.state)
                .then((response: any) => {
                    console.log(response);
                    alert('User has been added successfully')
                })
                .catch(function (error: any) {
                    console.log(error);
                    alert('Sorry! Your request can not be processed at the moment')
                });
        }


    }

Answer 1

handleChange = (event: any) => {
this.setState({ roleId: event.target.value }, () => this.validateName()) }

我假设不管用户选择哪种选项，都需要将拖放的名称设为roleId。

此更改完成后，您将在this.state.roleId中拥有所选角色

在反应中获得下拉列表的价值

1 个答案: