javascript form submit on button click check if required fields not empty

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Micaela
30 Jun 2016
1if(document.getElementById("question").value.length == 0)
2{
3    alert("empty")
4}
source
Jazlyn
22 Jul 2017
1const inputFeilds = document.querySelectorAll("input");
2
3const validInputs = Array.from(inputFeilds).filter( input => input.value !== "");
4
5console.log(validInputs) //[array with valid inputs]
source
Paolo
15 Mar 2019
1const checkEmpty = document.querySelector('#checkIt');
2checkEmpty.addEventListener('input', function () {
3  if (checkEmpty.value && // if exist AND
4    checkEmpty.value.length > 0 && // if value have one charecter at least
5    checkEmpty.value.trim().length > 0 // if value is not just spaces
6  ) 
7  { console.log('value is:    '+checkEmpty.value);}
8  else {console.log('No value'); 
9  }
10});
Fabiana
10 Jan 2017
1<input type="text" id="checkIt" required />
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