Set textbox value

Question

How can I set the value of a textBox value using Javascript?

I can read the value of the txtUserName field in my AJAX method. But in the two commented rows give an error:

  function handle_geolocation_query(position) {

       // $("input#MainContent_txtEnlem").val() = position.coords.latitude;
       // $("input#MainContent_txtBoylam").val() = position.coords.longitude;
        PageMethods.SendLocation($("input#MainContent_txtUserName").val(), position.coords.latitude, position.coords.longitude);
    }

I'm using jQuery 1.4.1.

Peter-Paul van Gemerden · Accepted Answer · 2011-12-30 14:15:43Z

4

The error in you code is that you are assigning the value to function. What you should do is pass the value as agrument, so your code will be:

$("#MainContent_txtEnlem").val( position.coords.latitude);
$("#MainContent_txtBoylam").val(position.coords.longitude);

Some other points:

If you are making use of id then there is no need to write input#....
This is a jQuery function. It's not pure JavaScript.

edited Dec 30, 2011 at 14:15

Peter-Paul van Gemerden

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answered Dec 30, 2011 at 13:14

Pranay Rana

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1 Comment

Peter-Paul van Gemerden Over a year ago

Just to elaborate: val() returns the value. So you're trying to assigning the new value to the string that was returned, not to any property of the <input>.

John · Accepted Answer · 2011-12-30 13:14:35Z

0

You should be able to just use $("#textboxId").val("some text"); What error does it give when you try this?

answered Dec 30, 2011 at 13:14

John

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Comments

Camilo Martin · Accepted Answer · 2011-12-30 13:18:16Z

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I think it gives you an error because you're trying to assign a value to a function.

answered Dec 30, 2011 at 13:18

Camilo Martin

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