Question

First I have created a <div>....</div> which is hidden on pageload using javascript function. Then I have created an empty textbox using forms. Now when anyone clicks a button then the whole content of the hidden <div>....</div> should be loaded in the textbox in the form. What should be code for this?

Answer 1

maybe this way

<div id="hiddendiv"><strong>some</strong> content</div>
<button onclick="copyfunction();">click me</button>
<textarea id="textarea"></textarea>

<script>
    function copyfunction() {
        var textarea = document.getElementById('textarea');
        var hiddendiv = document.getElementById('hiddendiv');
        textarea.value = hiddendiv.innerText;
    }
</script>

tested, it works