I'll make it quick. I researched a lot but I'm not sure why this is not working.
I have a textarea tag which I want to set to 'data-something' tag using setAttribute("data-something","") command and it works just fine if I just list it out there. However what I'm doing is I"m creating a button that when clicked sets the attribute of the textarea to 'data-something', and no matter what it fails to operate when I nest setAttribute inside a myFunction and set button onclick="myFunction()". I'd appreciate if someone could explain a workaround that.
Thanks a ton for your patience.
This is what works:
<textarea></textarea>
<script>
textarea.setAttribute("data-something","")
</script>
This is what doesn't work
<textarea></textarea>
<button onclick="myFunction()"></button>
<script>
function myFunction(){
textarea.setAttribute("data-something","")
}
</script>
You have to give you element a handle getElementById then make the change
function myFunction(){
let textarea = document.getElementById("Foo");
textarea.setAttribute("data-something","This is the set Data");
console.log(textarea);
}<textarea id="Foo"></textarea>
<button onclick="myFunction()">Click me</button>