Freelance Web Development Portal - Avoid submitting empty fields to server

This little javascript function with customization ofcourse will submit to the server ony fields with values in them. Example..

[searchform]
name -> empty
email ->
age -> empty

normal query string - search.php?name=&email=address%40host.com&email&age=

with this functionality - search.php?email=address%40host.com

You can also use this with some tweaks if for some reason you wanted to submit information for several different forms.

Javascript Code:


function doSearch(){
    var s = document.getElementById('s_form')
    var isvalid = new Array()
    var v_hash = new Array()
    
    for(i=0;i
        if(s.elements[i].type=='text' && s.elements[i].value.length > 0 ){
                isvalid.push(s.elements[i].name)
                v_hash.push(s.elements[i].value)
                }
        }
    switch(isvalid.length){
        case 0:
        alert("You must enter a keyword in atleast one field")
        default:
        filter_form = document.createElement('FORM')
        filter_form.setAttribute('name','filter_search')
        filter_form.setAttribute('action','search.php')
        filter_form.setAttribute('method','get')
        
        for(i in isvalid){
            
            filter_field = document.createElement('INPUT')
            filter_field.setAttribute('name',isvalid[i])
            filter_field.setAttribute('type','hidden')
            filter_field.setAttribute('value',v_hash[i])
            filter_form.appendChild(filter_field)
            }
        submit_field = document.createElement('INPUT')
        submit_field.setAttribute('name','do')
        submit_field.setAttribute('type','hidden')
        submit_field.setAttribute('value','search')
        filter_form.appendChild(submit_field)
        document.getElementById('maincell').appendChild(filter_form)
        filter_form.submit()
        }
    
    
}