JSFiddle - React, Tailwind, and code Playground
HTML
<INPUT class="input_checkItem" TYPE="text" NAME="n_checkbox" VALUE="1234" id="1" checked>
<label for="1">The value of this label is Yes</label>
JavaScript
$(".input_checkItem").change(function() {
if (this.click) {
$(this).next('label').text('done');
} else
alert(2);
});