html
html
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<!DOCTYPE html>
<html>
<head>
<title>Page Title</title>
</head>
<body>
</body>
</html>
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css
css
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body {
}
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js
js
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function once(fn, context) {
var result;
return function() {
if(fn) {
result = fn.apply(context || this, arguments);
fn = null;
}
return result;
};
}
var fireOnce = once(function() {
console.log('BOOM');
});
fireOnce();
fireOnce();
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