button functions html

1<script>
2 function myFunction() {
3   alert("ALERT");
4 }
5</script>
6<button onclick="myFunction">Click</button>

1<script>
2  $(document).ready(function(){
3    $('#MyButton').click(function(){
4       CapacityChart();
5    });
6  });
7</script>
8
9<input type="button" value="Capacity Chart" id="MyButton" >

1<button onclick="myFunction()">Click me</button>
2
3<p id="demo"></p>
4
5<script>
6function myFunction() {
7  document.getElementById("demo").innerHTML = "Hello World";
8}
9</script>