Setting the value of a textarea moves the cursor to the end. So you just need to save the value, clear it, focus it, and re-apply the value and you’re good.
$("button").on("click", function() {
// cache textarea as we need it more than once
var textarea = $("textarea"),
// save old value as we need to clear it
val = textarea.val();
// focus textarea, clear value, re-apply
textarea
.focus()
.val("")
.val(val);
});This demo does that but also applies a little bit of UX. If the textarea’s current value doesn’t end in a space, add one. Just so you can click-and-keep-typing as you might.
You could make it a plugin as well:
$.fn.focusToEnd = function() {
return this.each(function() {
var v = $(this).val();
$(this).focus().val("").val(v);
});
};