JQuery how can i check if the textbox is empty

Question

I'm trying to know if the textbox is empty when i change of textbox, how can i do it? i tried to create a script, but i totally failed.

I'm new at jQuery.

Here my js script

$("#description").blur(function())){
if ($("#description").val() == "") alert ("Empty!");
}}

I want to know if my textarea is empty or not

<label>Description</label>
<textarea cols="55" rows="3" id="description" name="description">
</textarea>
<br><br>

What do i need to do? I dont want to call a function inside the textarea

possible duplicate of [Check if textbox has empty value](http://stackoverflow.com/questions/1565193/check-if-textbox-has-empty-value) — Jorge, Apr 04 '14 at 13:39

score 1 · Answer 1 · answered Apr 04 '14 at 13:38

1

Wrap it in dom ready

$(document).ready(function () {
    $("#description").blur(function () {
        if ($("#description").val() == "") alert("Empty!");
    });
});

aLso your syntax has some mistakes

answered Apr 04 '14 at 13:38

Anoop Joshi P

score 0 · Answer 2 · answered Apr 04 '14 at 13:38

0

Use change

$("#description").on('change',function(){
  if(this.value == "") alert("Empty");
});

answered Apr 04 '14 at 13:38

Adil Shaikh

score 0 · Accepted Answer · answered Apr 04 '14 at 13:39

0

$("#description").blur(function(){
if ($("#description").val() == ""){ alert ("Empty!")};
});

answered Apr 04 '14 at 13:39

RGS

score 0 · Answer 4 · answered Apr 04 '14 at 13:40

0

$(document).ready(function () {
    if ($('#element').is(':empty')){
       //do something
     }
});

answered Apr 04 '14 at 13:40

Bertotz

4 Answers4