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object-explorer.html
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<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1">
<title>JavaScript Object Explorer</title>
<link href="https://cdnjs.cloudflare.com/ajax/libs/normalize/5.0.0/normalize.min.css" rel="stylesheet">
<style>table,th,td{border:1px solid #000;border-collapse:collapse;border-spacing:0}pre{margin:0}</style>
</head>
<body>
<h1>JavaScript Object Explorer</h1>
<p><input type="text" class="input" value="window"><button type="button" class="submit">Submit</button></p>
<table class="output"></table>
<script>
(function() {
if (typeof document.getElementsByClassName !== 'function') {
document.getElementsByClassName = function(match) {
var result = [],
elements = document.getElementsByTagName('*'),
i, elem;
match = ' ' + match + ' ';
for (i = 0; i < elements.length; i++) {
elem = elements[i];
if ((' ' + (elem.className || elem.getAttribute('class')) + ' ').indexOf(match) > -1) {
result.push(elem);
}
}
return result;
};
}
})();
</script>
<script>
(function() {
function garbageToString(obj) {
var div = document.createElement('div');
div.appendChild(document.createTextNode(String(obj)));
return div.innerHTML;
}
document.getElementsByClassName('submit')[0].onclick = function() {
var str = document.getElementsByClassName('input')[0].value;
var out = '';
try {
var obj = eval(str);
out += '<tr><th>' + str + '</th><th><pre>' + Object.prototype.toString.call(obj) + '</pre></th><th><pre>' + garbageToString(obj) + '</pre></th></tr>';
for (var property in obj) {
out += '<tr><td>' + property + '</td><td><pre>' + Object.prototype.toString.call(obj[property]) + '</pre></td><td><pre>' + garbageToString(obj[property]) + '</pre></td></tr>';
}
} catch (e) {
out += '<tr><th colspan="3">' + e.name + ': ' + e.message + '</th></tr>';
} finally {
document.getElementsByClassName('output')[0].innerHTML = out;
}
};
document.getElementsByClassName('submit')[0].onclick();
})();
</script>
</body>
</html>