How can i show same result jquery (inset a sapn tag after input element ) to javascript. : i am new learner to JavaScript.
I have lot of try for inser a span tag after input element.
I can do it by jQuery ,But i want to convert it JavaScript. 
please tell me anyone for my problem. 
This is my jQuery code i want to same result by JavaScript 
`jQuery(document).ready(function(){
	jQuery('#selector_id').after('<span class="arrow"></span>');
});`
