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Method for including external js files in html and calling parameterized functions

Introduce external js files in html and call parameterized functions in js files

1 Project Structure

2 Write a.js, test.html

//a.js
function abc(str) {
  alert(str);
}
//test.html
<html>
<head>
<script type="text/javascript" src="a.js"></script>
<script type="text/javascript">
  window.onload = function() {
	var fun = abc; //reference abc function
	fun(123);
  };
 </script>
</head>
<body>
</body>
</html>

3 Test Results

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Basic Tutorial
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