How to remove/change an input value using javascript

Question

How do I remove the value 'Anonymous' in this input that I have and replace it with a placeholder text 'Your name' using javascript/jquery? I don't have access to the HTML code.

This is what I have so far, but don't really know where to go from there.

document.getElementById('txtYourName').placeholder =' Your Name ';

HTML

<input id="txtYourName" type="text" value="Anonymous" name="txtYourName"></input>

add document.getElementById('txtYourName').value = "";, the placeholder is only visible if the input has no value. — adeneo
– adeneo, Commented Mar 21, 2014 at 18:32

Charlie74 · Accepted Answer · 2014-03-21 18:42:25Z

1

Add this second line here... A placeholder is only seen when the value happens to be blank. With the code below, you can set the placeholder, as well as erase the default value in your field.

document.getElementById('txtYourName').placeholder =' Your Name ';  
document.getElementById('txtYourName').value = "";

Demo: http://jsfiddle.net/723vL/

edited Mar 21, 2014 at 18:42

answered Mar 21, 2014 at 18:33

Charlie74

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Comments

Felix · Accepted Answer · 2014-03-21 18:43:08Z

1

You can use .val():

$('#txtYourName').val('');

or pure javascript using:

document.getElementById('txtYourName').value = ""

If you want to set new value then just put your value inside "", like:

$('#txtYourName').val('new value');

With jQuery, your final code should look like:

$('#txtYourName').attr('placeholder','Your name');
$('#txtYourName').val('');

Fiddle Demo

With pure JS, you final code should look like:

document.getElementById('txtYourName').placeholder ='Your name';  
document.getElementById('txtYourName').value = "";

Fiddle Demo

edited Mar 21, 2014 at 18:43

answered Mar 21, 2014 at 18:32

Felix

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2 Comments

Suman Bogati Over a year ago

why pure javascript is poor?

Abhishek Prakash Over a year ago

Can you explain why javascript is poor?

Jeremy J Starcher · Accepted Answer · 2014-03-21 18:34:13Z

0

That should do it, so long as you are running that script either on an onload event, jquery's ready event or at the very bottom of the page, once the DOM has been rendered.

Are you getting an error in your console?

answered Mar 21, 2014 at 18:34

Jeremy J Starcher

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Comments

A J · Accepted Answer · 2014-03-21 18:35:45Z

0

try this

returns value:

$('#txtYourName').attr("value");

sets value

$('#txtYourName').attr("value", "");

answered Mar 21, 2014 at 18:35

A J

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3 Comments

Charlie74 Over a year ago

Actually, this is incorrect. This changes the value of the field, but does not set the placeholder text (or show the placeholder text). The OP is looking to clear out the value, not set it.

A J Over a year ago

@Charlie74 : OP can always set "new_value" to "" , right?

Charlie74 Over a year ago

Correct, that would be more of what the OP is asking.

Gautam · Accepted Answer · 2014-03-21 18:33:08Z

-1

use

document.getElementById('txtYourName').value ='some vaue';

if you are using jQuery then you can use

$("#txtYourName").val('some value');

answered Mar 21, 2014 at 18:33

Gautam

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2 Comments

Charlie74 Over a year ago

Actually, this is incorrect. This changes the value of the field, but does not set the placeholder text (or show the placeholder text). The OP is looking to clear out the value, not set it.

Gautam Over a year ago

@Charlie74 he wants to change the value "how to remove/change an input value using javascript"

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