call javascript function in butom code example

Example 1: how to call a function with a button in javascript

<script>
		function myFunction()
		{
			document.write("<h1>HELLO</h1>")
		}
	</script>
<button onclick="myFunction()">Click</button>

Example 2: calling function on click html

<img src="hospital.png" id="hospitals" onclick="damarkers();">

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Html Example

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