What does it mean when a javascript function is called like this func(foo)(bar)

Asked Apr 18 '19 at 06:50

Active Apr 18 '19 at 06:51

Viewed 60 times

I often see that a method is called with a second pair of parentheses.

For example the connect function in redux.

connect(
  mapStateToProps,
  mapDispatchToProps
)(TodoItem)

Or this function from antd

const prefixSelector = getFieldDecorator('prefix', {
      initialValue: '86',
    })(
      <Select style={{ width: 70 }}>
        <Option value="86">+86</Option>
        <Option value="87">+87</Option>
      </Select>
    );const prefixSelector = getFieldDecorator('prefix', {
      initialValue: '86',
    })(
      <Select style={{ width: 70 }}>
        <Option value="86">+86</Option>
        <Option value="87">+87</Option>
      </Select>
    );

What happens here and how is this concept called so that i can research it further?

asked Apr 18 '19 at 06:50

Joshua Beckers

5

Higher-order function - you can call a function that returns another function – CertainPerformance Apr 18 '19 at 06:51
You don't need to write return, it will return automatically. – Sameer Reza Khan Apr 18 '19 at 07:01
Hi, first of all, thank you for the edit and the links to the answer to my question. Since im new here, what is the code of conduct here? Should i delete the question since its dublicate or leave it for others to find who use the same wording? – Joshua Beckers Apr 18 '19 at 07:11
@JayBee: yes, better to leave this one. – Sergio Tulentsev Apr 18 '19 at 07:14

What does it mean when a javascript function is called like this func(foo)(bar)

0 Answers0