How To Format And Display Json Data Using Array.map In Reactjs?

I am trying to display data which is stored as userList state variable. I am trying to map each object and display name and email parameter from each object but it does not display

Solution 1:

As per your model schema, your user object contains userName and not name, so you would write user.userName in your displayUsers method, Also a key param is helpful in performance optimisation and you should add a unique key on the element returned by the iterator

displayUsers(){
        returnthis.state.userList.map( user => {
          return(
            <divclassName="item-card"key={user.id}><divclassName="info"><divclassName="username">Username: {user.userName}</div></div><divclassName="del-wrap"><imgsrc={require("../../images/cancel.svg")}/></div></div>
            );
        })
  } 

Solution 2:

You need to add a key to the root element of map object to be returned. `

displayUsers(){
    returnthis.state.userList.map( user => {
      return(
        <divkey={user.name}className="item-card"><divclassName="info"><divclassName="username">Username: {user.name}</div></div><divclassName="del-wrap"><imgsrc={require("../../images/cancel.svg")}/></div></div>
        );
    })
  }

Solution 3:

Before I edited your title, this would be a handy shortcut to display formatted JSON data right in the document.

displayUsers = () => <pre>{JSON.stringify(this.state.userList, null, '  ')}</pre>

to only display userName and email, use a whitelist array like this

JSON.stringify(this.state.userList, ["userName", "email"], '  ')

You can read more about JSON.stringify(value[, replacer[, space]])here.