関数の定義

JavaScriptの例

<SCRIPT LANGUAGE="JavaScript">
	document.write("f(x) = x * x <P>");
	document.write("f(2) = ", f(2), "<P>");
	document.write("f(5) = ", f(5), "<P>");

	function f(x) {
		return x*x;
	}
</SCRIPT>

上記の実行結果