javascript - How to initialise array in react-native using es6? - Stack Overflow

admin管理员组

文章数量:1345116

I am trying to create empty array in react-native using es6. But while accessing it I get an error data not defined.

Here is the code snippet which I am using to initialise the array.

  constructor() {
    super();

    this.state = {
      search: "",
      data: []
    }
  }

Here is the code through which I am trying to populate the array and at the same time logging it

.then((responseData) => {
        this.setState({
          data: responseData.hits.hits.map(function(search){
            return{
              name: search._source.service_name
            }
          })
        })
        console.log(data);

I think so there is a problem in initialisation of array can anybody rectify it?

I am trying to create empty array in react-native using es6. But while accessing it I get an error data not defined.

Here is the code snippet which I am using to initialise the array.

  constructor() {
    super();

    this.state = {
      search: "",
      data: []
    }
  }

Here is the code through which I am trying to populate the array and at the same time logging it

.then((responseData) => {
        this.setState({
          data: responseData.hits.hits.map(function(search){
            return{
              name: search._source.service_name
            }
          })
        })
        console.log(data);

I think so there is a problem in initialisation of array can anybody rectify it?

• javascript
• arrays
• initialization
• react-native
• ecmascript-6

Share Improve this question Follow edited Dec 12, 2020 at 0:55 peterh 1 asked Aug 3, 2016 at 12:32 atifatif 76944 gold badges1313 silver badges2525 bronze badges

Add a ment  | 

2 Answers 2

Sorted by: Reset to default 6

Your initializing of the array looks fine. You just can't access data like a local scoped variable. The data array in your example is a property/attribute of your state object.

So you need to access your data array like this: this.state.data

Try console.log(this.state.data) instead of console.log(data)

本文标签： javascriptHow to initialise array in reactnative using es6Stack Overflow