function fetch() { var main = new XMLHttpRequest(); main.onreadystatechange = function() { var loader = ''; if (this.readyState == 0) { document.getElementById("output").innerHTML = '

request not initialized

' + loader; } else if (this.readyState == 1) { document.getElementById("output").innerHTML = '

server connection established

' + loader; } else if (this.readyState == 2) { document.getElementById("output").innerHTML = '

request received

' + loader; } else if (this.readyState == 3) { document.getElementById("output").innerHTML = '

processing request

' + loader; } else if (this.readyState == 4 && this.status == 200) { var data = JSON.parse(this.responseText); final = '

' + data.login + '

'; validate(data.bio, '

' + data.bio + '

'); validate(data.name, '

Name: ' + data.name + '

'); validate(data.email, '

' + data.email + '

'); validate(data.location, '

Location: ' + data.location + '

'); validate(data.twitter_username, '

Twitter: ' + data.twitter_username + '

'); validate(data.blog, '

Blog/ Website

'); validate(data.followers, '

Followers: ' + data.followers + '

'); validate(data.following, '

Following: ' + data.following + '

'); validate(data.public_repos, '

Repositories: ' + data.public_repos + '

'); validate(data.public_gists, '

Gists: ' + data.public_gists + '

'); document.getElementById("output").innerHTML = final; } else { document.getElementById("output").innerHTML = '

Something went wrong

' + loader; } }; main.open("GET", "https://api.github.com/users/" + document.getElementById("user").value, true); main.send(); } document.getElementById("user") .addEventListener("keyup", function(event) { event.preventDefault(); if (event.keyCode === 13) { document.getElementById("start").click(); } }); function validate(name, fill) { if (name !== null && name !== "") { final = final + fill; } } var final;

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