/Html/Javascript check if input is empty

Javascript check if input is empty

How to check if all inputs are not empty with javascript

const inputFeilds = document.querySelectorAll("input");

const validInputs = Array.from(inputFeilds).filter( input => input.value !== "");

console.log(validInputs) //[array with valid inputs]

If input value is null do something

if(document.getElementById("question").value.length == 0)
{
    alert("empty")
}

Javascript check if input is empty

<!-- check if any input field in "Form" is empty using JS -->

<script type="text/javascript">
  function validateForm() {
    var a = document.forms["Form"]["answer_a"].value;
    var b = document.forms["Form"]["answer_b"].value;
    if (!a || !b) {
      alert("Please Fill All Required Fields");
      return false;
    }
  }
</script>

<form method="post" name="Form" onsubmit="return validateForm()" action="">
  <input type="text" name="answer_a" value="">
  <input type="password" name="answer_b" value="password">
</form>

Source: stackoverflow.com

Javascript check if input is empty

if(document.getElementById("question").value.length == 0)
{
    console.log("empty")
}

Similar codes

1 vote242 views2 answers
How to link a local css file in html
Html
0 vote229 views1 answer
Scrool immagini html
Html
0 vote231 views1 answer
How to make text appear at tope left in html
Html
0 vote222 views1 answer
Bootstrap modal search box
Html
0 vote220 views1 answer
Education html templates
Html
1 vote232 views1 answer
Ardhaan's world
Html
0 vote236 views1 answer
Phpstrom goto bookmark
Html
0 vote236 views1 answer
Font jrxml
Html
13 votes215 views5 answers
Html div
Html
0 vote242 views1 answer
Image urol in src local image
Html