如何访问对象变量的字段作为道具传递给它的子组件？

Question

I have a component that has another component to return.

var fieldValues = {
    firstName : null,
    lastName : null,
    gender : null,
    birthtday : null,
    dialingCode: null,
    mobileNumber : null,
    request_id: null,
    textCode : null,
    email : null,
    password : null,
    tagsSelectedList : [],
}

export default class SignUp extends React.Component {

    render() {

update

        return <SignUpTags
                    dialingCode = {fieldValues['dialingCode']}
                    mobileNumber = {fieldValues['mobileNumber']}
                    requestID = {fieldValues['request_id']}
                    nextStep={this.nextStep}
                    saveValues={this.saveValues}
                />
    }
}

When I load the page, I get the following errors:

dialingCode , mobileNumber and requestID are all undefined.

How can I access the object variable's fieds to pass as the props to its child component?

Answer 1

They should be fieldValues['dialingCode'] , fieldValues['mobileNumber'] and fieldValues['requestId'] .

Note the ' 's indicating they are key strings and aren't variables .