JavaScript My label is not counting up label counting machine,label counting machine price,label counting sensor,

Why is this code not working? So far I have only got it to work as an input. I need it to work as a label or span. I need the label to count up 1 number on every click.

<html>
<head>
    <script type="text/javascript">
        var a = 1;

        function increase () {
            document.getElementById("text").value=a;
            a=a+1;
        }            
    </script>
</head>

<body>
    <button type="button" onclick="increase()">show</button>
    <label type="text" id="text">0</label>
</body>

Answer:1

try this fiddle

i have tried parseInt()

 var a = parseInt(document.getElementById("text").innerHTML);

 a++;
 console.log(a);
 document.getElementById("text").innerHTML = a;
Answer:2

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