在这里，我在 Formik Field 上调用 onChange 函数，但它没有调用？如何在 Formik 字段上调用自定义函数？
这是我在 React Component 下的自定义函数：
onStudentScore = (value, form) => {
alert("called");
const maxScore = value.writtenexammaxscore;
console.log(maxScore);
form.getFieldValue("writtenexammaxscore", maxScore);
if (maxScore > form.getFieldValue("writtenexamstudentsscore")) {
alert("MaxScore is less than StudentScore");
}
};
我的表单是在渲染下创建的，并在 StudentScore 字段上编写一个 onChange 函数。但它不叫？如何调用这个函数？
render() {
const { values, handleSubmit} = this.props
return (
return (
<div>
<h5 align="left">MidTerm Form</h5>
<Card>
<Form onSubmit={handleSubmit}>
<Row>
<Col span={4}>
<b>Written Exam:</b>
</Col>
<Col span={2}>
<Field
name="writtenexammaxscore"
component={AntInput}
type="text"
style={{ width: 40 }}
/>
</Col>
<Col span={2}>outof</Col>
<Col span={3}>
<Field
name="writtenexamstudentsscore"
component={AntInput}
type="text"
style={{ width: 40 }}
onChange={this.onStudentScore}
/>
// I wrote the function on field this way
</Col>
<Col span={2}>
<Divider type="vertical" />
</Col>
</Row>
<Row>
<Col span={10} />
<Col span={8} push={10}>
<Button type="primary" htmlType="submit">
Submit
</Button>
</Col>
</Row>
</Form>
</Card>
</div>
);
}
const MidTermForm = withFormik({
mapPropsToValues: () => ({
writtenexammaxscore: '',
writtenexamstudentsscore: '',
oralexammaximumscore: '',
oralexamstudentsscore: '',
}),
handleSubmit(values, { resetForm }) {
resetForm();
console.log(values)
}
})(MidTermFormComponent)
export default MidTermForm