PHP AJAX button click counter - php

Question

i want to make a button click counter. When you click the button the text from it changes, when the button is clicked i want to write to the database but i can't manage this.
<button type="button" class="btn btn-info" style="width:90%;" id="textChanger" onclick="counter;"><h4><i class="glyphicon glyphicon-earphone" aria-hidden="true"> </i> XXXX XXX XXX <h6>Show Number</h6></h4></button>
document.getElementById("textChanger").onclick= function(){
document.getElementById("textChanger").innerHTML="<h4><i class=\"glyphicon glyphicon-earphone\" aria-hidden=\"true\"> </i> <?php echo $nrTelefonAnunt ?> </h4>";
}
this is the code that i manage the text change, now what can i do to write to the database, i tried some methods but none worked

Answer 1

Thanks everybody for the answers i manged by adding this:
$('#textChanger').click(function(){
$.ajax({
url : 'rate.php?idanunt="<?php echo $idAnunt ?>"',
type : 'post',
success : function(data){
}
});
});

Answer 2

Try this
<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.1.1/jquery.min.js"></script>
<button type="button" class="btn btn-info" style="width:90%;" id="textChanger" onclick="counter;">1</button>
<script>
document.getElementById("textChanger").onclick= function(){
var count = document.getElementById("textChanger").innerHTML;
count = parseInt(count) + 1;
document.getElementById("textChanger").innerHTML=count;
}
</script>

Answer 3

Try this
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.1.1/jquery.js"></script>
<button type="button" class="btn btn-info" style="width:90%;" id="textChanger" onclick="counter;"><h4><i class="glyphicon glyphicon-earphone" aria-hidden="true"> </i> <span>XXXXX</span> <h6>Show Number</h6></h4></button>
<script>
count=0;
$(document).on("click","button",function(){
count++;
$('span').text(count);
});
</script>