JSFiddle - React, Tailwind, and code Playground

HTML

<form action="/" class="search">
    <fieldset>
        <label for="pesquisar">
            Buscar</label>
        <input type="text" id="pesquisar">
        <button type="submit" class="send-search"></button>
    </fieldset>
</form>

JavaScript

$("#pesquisar").focusout(function(){
	if($(this).val() == ""){
  	$(this).hide("slow", function(){
    	$("label[for='pesquisar']").click(function(){
      	$("#pesquisar").show("slow");
      })
    });
  }
})