label input for child theme us js

[chubbychub]

I have a wordpress theme and someone wrote a script as a child theme:
this is the view source code:

<label for="sf3_textsearch_textsearch">Text Search</label>
<input id="sf3_textsearch_textsearch" value="" name="sf3_textsearch_textsearch" placeholder="searching something here" type="text">

from the script below:

jQuery('document').ready(function () {
    jQuery('.wpl_search_fields.textsearch input').each(function(ev){
            jQuery(this).attr("placeholder", "searching something here ");
    })
});

I want to do the same thing but from this:

<label>Price</label>
<input id="sf3_unit_price" class="wpl_search_widget_field_unit" name="sf3_unit_price" value="260" type="hidden">

This Is my first post and don't have a clue on what or how java is, please help, thankyou.

[SurfMan]

You are looking at JavaScript code. Java is not the same as JavaScript.

Besides that, you are not giving out enough information to start helping you. Prepare a better question and find a Wordpress forum to drop that in.