Javascript Form Reset Elements Values By Elements Shared Name Plus Suffix

»»» shrink text ««« ««« enlarge text »»»

OBJECTIVE: given a form with a set of elements sharing the same name prefix followed by a progressive number, reset their values.  
A simple task - a similar task is Javascript Form Clear Default Input Values Upon Submit.

function resetValuesByName(form, namePrefix, start, newValue){
if(typeof namePrefix!='string'){namePrefix='';}; start=Math.abs(start)||0; newValue=newValue||'';
for(var i=start; form[namePrefix+i]; i++){form[namePrefix+i].value=newValue;}
return false;
}

Remove colors  
 
INPUTS: first the form object such as, for instance, it would be retrieved via document.getElementById  
Then a string representing the shared prefix name of all the form fields whose values must be reset.  
Then an optional number, defaulting to zero, representing the starting number to append to the previous argument, and to increment by one unit at each iteration, in order to locate the form elements.  
Then an optional string, defaulting to an empty string, which is the new value to assign.  
 
RETURNS: boolean false  
 
CAVEATS: the function uses the associative nature of every form, that holds as its properties its elements by element names.  
Of course, if the numerical progression of the suffix is broken (that is, a prefix name followed by 1,2,3 and then, say, suddenly jumping to prefix followed by 5 instead than by 4) the function would halt.  
 
Example of use:

<script>
//include your function here, then:
</script>

<form id="foo">Fill in, then click the reset link:<br />
<input type="text" name="a_name_prefix1" /><br />
<input type="text" name="a_name_prefix2" /><br />
<input type="text" name="other_name" /><br />
<input type="text" name="a_name_prefix3" /><br />
</form><br />
<a href="#" onclick="return resetValuesByName( document.getElementById('foo'), 'a_name_prefix', 1 )">reset</a>

Remove colors

Visitors: 8,953
Overall visits to all the topics: 5,065,968
Daily average (Calculated from the website subscription day): 2,078.77 Optional sorting commands:
Normal order: click here
Order by amount of visits: click here
Current order: by category: Books Other categories available for this author (Limited data report: 100):
Advice: Martial Arts and Self Defense(4), Books(236), Boxing(2), Critical Reviews and Essays(4), Dictionaries(1), Emergency Care(4), Epistles Letters and Advice(5), Fantasy Epics and Fables(1), History and Documents(5), Humor and Jokes(2), Methematics(2), Music and Lyrics(6), News Digests and Press Reviews(1), Novels Poetry and Stories(3), Philosophy Reviews(7), Poetry(1), Programming(4), Programming Ajax(2), Programming Javascript(82), Programming Php(52), Psychology(1), Quotes(1), Religion Esoterica and Spirituality(13), Scientifical Reviews(4), Self Improvement(1), Sport Activities and Apparels(1), Tarots(1) Showing topics: 1, 10
Available total: 450 View only a list of the snippets by this author: click here.
Other topics available for this author: click on any title below to view the complete item: