js input value is empty code example

Example 1: how to make input field empty in javascript

Assuming the element you want to change has the id question, so you can do

document.getElementById("question").value = "";

Example 2: hhow to check input is null in html using js

function required(inputtx) 
   {
     if (inputtx.value.length == 0)
      { 
         alert("message");  	
         return false; 
      }  	
      return true; 
    }