Setting value to null using jQuery

Question

I have an Id City on page which is basically a model property. I want to set it as null. I am trying this to achieve it:

$("#City").val(null);

But it is not setting the value to null.

By "it" do you mean the value of the element, the innerHTML of the element, or the ID of the element? — rink.attendant.6
– rink.attendant.6, Commented Sep 25, 2013 at 15:45

adeneo · Accepted Answer · 2013-09-25 15:45:41Z

43

You don't set an elements value to null, as HTML has no concept of null, undefined etc, you remove the attribute, or better yet, set it to an empty string:

$("#City").val("");

answered Sep 25, 2013 at 15:45

adeneo

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Comments

Suresh Atta · Accepted Answer · 2013-09-25 15:43:28Z

6

If you are trying to set/remove Id

$("#City").attr("id","");

or use removeAttr()

If you are trying to set the value inside that ,

$("#City").val("");

answered Sep 25, 2013 at 15:43

Suresh Atta

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user1850534 · Accepted Answer · 2013-09-25 15:57:57Z

3

Using normal javascript , try using setAttribute method ,

document.getElementById("City").setAttribute("value" , "");

or without using the setAttribute method,

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

answered Sep 25, 2013 at 15:57

user1850534

Comments

deformhead · Accepted Answer · 2013-09-25 20:00:48Z

0

You can remove Id using jQuery prop() or attr() methods like this :

$('#City').prop('id', null);

or like this :

$('#City').attr('id', null);

Just in case :

jQuery Documentation for prop() method

jQuery Documentation for attr() method

edited Sep 25, 2013 at 20:00

answered Sep 25, 2013 at 16:15

deformhead

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