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Alexander D
8,685 PointsUnable to loop through the list
Hello there,
As always I like to break things around and use my code rather than what is there on the workspace. Also, I wanted to review the previous lesson with Dave here:
https://teamtreehouse.com/library/processing-json-data-2
I am trying to loop through the list we import from the URL, and print a very simple HTML list that includes astronauts names in the HTML page.
The code is the following:
//sending a request.
function send () {
var xhr = new XMLHttpRequest();
xhr.onreadystatechange = function () {
if (xhr.readyState === 4 && xhr.status === 200) {
let astronauts = JSON.parse(xhr.responseText);
//creating a list with the information we get from the link
var listHTML = '<ul class="list">'
for (let i = 0; i < astronauts.length; i++) {
listHTML += "<li>" + people[i].name + "</li>"
}
listHTML += '</ul>' //closing string
console.log(astronauts);
// Here I have selected the DIV in the HTML file. I am printing the list there.
document.getElementById('people').innerHTML = listHTML;
}
};
xhr.open("GET", 'http://api.open-notify.org/astros.json');
xhr.send();
}
//this is the button that should fire the function:
btn.addEventListener('click', (event) => {
send ()
});
Somewhat I am unable to loop through what I get from the server: "{message: "success", people: Array(6), number: 6}".
This array of arrays contains 6 "people" , which are:
1: {name: "Nick Hague", craft: "ISS"} 2: {name: "Christina Koch", craft: "ISS"} 3: {name: "Alexander Skvortsov", craft: "ISS"} 4: {name: "Luca Parmitano", craft: "ISS"} 5: {name: "Andrew Morgan", craft: "ISS"}
What am I doing wrong?
2 Answers
anthony amaro
8,686 Pointshello alexander. it seems that you are trying to loop on an object. you actually need to get to the array.
let astronauts = JSON.parse(xhr.responseText);
let arr = astronauts.people;
// here just change arr.length in your loop.
i hope this solves your issue.
Alexander D
8,685 Pointsanthony amaro it worked like a charm! Thanks a lot!