how to change the text of the button with js code example

Example 1: javascript change button text onclick

<!DOCTYPE html>
<html>
<body>

<button id="demo" onclick="myFunction()">Click me to change my HTML content (innerHTML).</button>

<script>
function myFunction() {
  document.getElementById("demo").innerHTML = "Paragraph changed!";
}
</script>

</body>
</html>

Example 2: html get button text

ar all = document.getElementsByTagName('*'); 
for (var i=0, max=all.length; i < max; i++) 
{
var elem = all[i];
if(elem.getAttribute("id") == 'ext-gen26'){
    if(elem.attributes != null){
        for (var x = 0; x < elem.attributes.length; x++) {
            var attrib = elem.attributes[x];
            alert(attrib.name + " = " + attrib.value);  
        }
    }
}
};

Tags:

Html Example

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