Answers for "how to hide a button in javascript"

hide div on button click javascript

<style>
	function hideDiv(){
		var closedDiv  = document.getElementById("closableDiv");
		closedDiv.style.display = "none";
	}
</style>
<button id="closableDiv" onClick="hideDiv()"> </button>

js hide div

//If you have jquery, you can use the following method:
$("#mydiv").hide(); //hides div.
$("#mydiv").show(); //shows div.
//If you don't have jquery...
//search up the following: html how to add jquery

how to make hide/show btn in js

let btnName = document.getElementById('btnId');
btnName.addEventListener('click', ()=>{
  let element = document.getElementById('elementId');
	if (element.style.display != 'inline'){
    	element.style.display = 'inline';
    }
  else{
    element.style.display = 'none'
  }
})