why when I click a button on an html page it reloads code example

Example 1: how to refresh page on click of button

<button type="button" onClick="refreshPage()">Close</button>


<script>
function refreshPage(){
    window.location.reload();
} 
</script>

Example 2: reload pageon button click

<button type="button" onClick="window.location.reload();">Close</button>