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ReadJSON.html
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ReadJSON.html
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<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<style type="text/css">
h2 {
font: 18 px "Lato", sans - serif;
font-weight: bold;
text-shadow: 1 px 1 px;
align-items: center;
justify-content: center;
}
.center {
text-align: center;
font: 24 px "Lato", sans - serif;
font-weight: bold;
margin-left: 10%;
margin-right: 10%;
width: 80%;
}
form.search input[type=text] {
padding: 10 px;
font-size: 17 px;
border: 2px solid rgb(163, 198, 236);
float: left;
width: 28%;
background: white;
margin-left: 36%;
margin-right: 36%;
margin-bottom: 12px;
height: 18px;
}
form.search button {
float: left;
background: rgb(240, 240, 240);
color: black;
font-size: 17px;
font-weight: bold;
border: 1px solid rgb(131, 128, 128);
cursor: pointer;
margin-left: 43%;
margin-right: 43%;
width: 16%;
border-radius: 5px;
height: 24px;
}
</style>
<script type="text/javascript">
var jsonDoc;
function loadJSON(url) {
try {
var xmlhttp = new XMLHttpRequest();
xmlhttp.open("GET", url, false); //open, send, responseText are
xmlhttp.send(); //properties of XMLHTTPRequest
jsonDoc = xmlhttp.responseText;
} catch (err) {
throw "There seems to some problem in locating the URL. File does not exist. Please check again your URL!"
}
return jsonDoc;
}
function LoadJSONUrl() {
try {
var url = document.getElementById("fileLocation").value;
if (url) {
loadJSON(url);
ShowCars();
} else {
throw "Filename left empty! Please enter JSON Filename in the above search box !!"
}
} catch (err) {
alert(err)
}
}
function ShowCars() {
try {
var obj = JSON.parse(jsonDoc);
} catch (err) {
throw "Invalid JSON File ! Error in Parsing. Please Check!!"
}
var txt = "";
var header = obj.Mainline.Table.Header.Data;
var rows = obj.Mainline.Table.Row;
txt += "<table border='1' width='100%' height='100%'>"
txt += "<tr>";
if (header === undefined) {
throw "Header values are missing in JSON!!"
}
for (var i = 0; i < header.length; i++) {
txt += "<td nowrap><b>" + header[i] + "</b></td>";
}
txt += "</tr>";
if (rows === undefined) {
throw "There are no entries for manufactures in JSON ! No Rows tag found !!"
}
var carsTag = ["Rank", "Group", "Hubs", "Vehicles", "HomePage", "Logo"];
for (var j = 0; j < rows.length; j++) {
txt += "<tr>";
var rowInfo = rows[j];
var k = 0;
for (var r in rowInfo) {
var key = carsTag[k];
k++;
var insertRow = rowInfo[key];
txt += "<td>";
if (insertRow != null) {
switch (key) {
case "Hubs":
txt = showHubs(txt, insertRow.Hub);
break;
case "HomePage":
txt += "<a href = \"" + rowInfo[key] + "\">" + rowInfo[key] + "</a>";
break;
case "Logo":
txt += "<img src = \"" + rowInfo[key] + "\" height=\"150px\" width=\"150px\">";
break;
default:
txt += rowInfo[key];
break;
}
} else {
txt += "";
}
txt += "</td>";
}
txt += "</tr>";
}
var left = (screen.width - 1100) / 2;
var top = (screen.height - 1000) / 4;
var newWindow = window.open('/', 'myWindow', 'scrollbars=1,resizable=1,height=1000,width=1100,top=' + top + ', left=' + left);
newWindow.document.open("text/html");
newWindow.document.write(txt);
newWindow.document.close();
}
function showHubs(str, hubs) {
str += "<ul>";
for (var h in hubs) {
if (h == 0) {
str += "<li><b>" + hubs[h] + "</b></li>"
} else {
str += "<li>" + hubs[h] + "</li>";
}
}
str += "</ul>";
return str;
}
</script>
</head>
<body>
<div style="height:100%;width:70%;margin-left:15%;margin-right:15%;margin-top:10%;">
<form class="search">
<center>
<h2> Enter URL for largest manufacturers by production (2017) List JSON File </h2>
</center>
<input id="fileLocation" type="text">
<button type="submit" onclick="LoadJSONUrl()">Submit Query</button>
</form>
</div>
</body>
</html>