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<html>
<head></head>
<body>
<script src="three.min.js"></script>
<script>
const scripts = [
[ 'Exercise 04', 'ex04.js' ],
[ 'Exercise 05', 'ex05.js' ],
[ 'Exercise 06', 'ex06.js' ],
];
</script>
<script>
const scrCont = document.createElement('nav');
scrCont.id = 'scrCont';
document.body.insertBefore(scrCont, document.body.firstChild);
const scrSel = document.createElement('select');
scrSel.id = 'scrSel';
scrCont.appendChild(scrSel);
function renderScr (index) {
var temp = document.createElement('script');
temp.src = scripts[index][1];
temp.id = scripts[index][1];
document.body.appendChild(temp);
}
for (var i = 0; i < scripts.length; i++) {
var temp = document.createElement('option');
temp.value = i;
temp.text = scripts[i][0];
scrSel.appendChild(temp);
}
var oldIndex = scrSel.value;
renderScr(scrSel.value);
scrSel.onchange = function() {
document.body.removeChild(document.getElementById(scripts[oldIndex][1]));
document.body.removeChild(document.getElementsByTagName('canvas')[0]);
renderScr(scrSel.value);
oldIndex = scrSel.value;
}
</script>
</body>
</html>
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