CODEWITHSUNDEEP
javascriptforms
Eddy Unruh
Eddy Unruh

Reputation: 309

Submit only non empty fields from Form

That is the form:

<form action="" method="GET">
  <input type="text" name="para1">
  <input type="text" name="para2">
  <input type="submit" value="search">
</form>

Now when I fill out only the first field I get example.com/?para1=value&para2= But I just want it to be example.com/?para1=value because para2 don't contains value. How can I do this? Should be possible with JS or anything?

Upvotes: 14

Views: 10202

Answers (3)

Darius Houle
Darius Houle

Reputation: 465

Something like this would be the plain javascript version:

<form id="theform" action="" method="GET" onsubmit="return removeEmpties()">
    <input type="text" name="para1"/>
    <input type="text" name="para2"/>
    <input type="submit" value="search"/>
</form>
<script>
  function removeEmpties() {
        var form = document.getElementById("theform");
        var inputs = form.children;
        var remove = [];
        for(var i = 0; i < inputs.length; i++) {
            if(inputs[i].value == "") {
                remove.push(inputs[i]);
            }
        }

        if(remove.length == inputs.length - 1)
          return false;

        for(var i = 0; i < remove.length; i++) 
          form.removeChild(remove[i]);
        return true;
    }
</script>

Upvotes: 3

Ted
Ted

Reputation: 4166

put onclick on submit button to call submitFunc() , rather than use form action:

<input type="button" onClick="submitFunc();" value="Pass Parameters"/>

js functions:

<script language="javascript" type="text/javascript">

function submitFunc()
{
   loopRemove("text",3);
   document.testform.action = "file:///C:/Users/mwafi/Desktop/test.html";
   document.testform.submit();
}

function loopRemove(startName,count)
{
  for(var i=1;i<=count;i++)
  {
    if(document.getElementById(startName+i).value=="")
    {
        var t = document.getElementById(startName+i);
        t.parentNode.removeChild(t);
    }
  }  
}

</script>

full code with HTML form:

<html>

<title>Pass non-empty parameters</title>

<head>

<script language="javascript" type="text/javascript">

function submitFunc()
{
   loopRemove("text",3);
   document.testform.action = "http://www.google.com/";
   document.testform.submit();
}

function loopRemove(startName,count)
{
  for(var i=1;i<=count;i++)
  {
    if(document.getElementById(startName+i).value=="")
    {
        var t = document.getElementById(startName+i);
        t.parentNode.removeChild(t);
    }
  }  
}

</script>

</head>

<body onload="document.testform.reset();">

 <form name="testform">

  <h3>Pass Non-empty parameters</h3>

  Parameter 1 : <input type="text" name="text1" id="text1" /><br>
  Parameter 2 : <input type="text" name="text2" id="text2" /><br>
  Parameter 3 : <input type="text" name="text3" id="text3" /><br><br>
  <input type="button" onClick="submitFunc();" value="Pass Parameters"/>

 <form>

</body>

</html>

remember don't use form action.

source: http://www.scriptsplash.com/2009/07/passing-only-non-empty-fields-on-form.html

Upvotes: 0

Rashmin Javiya
Rashmin Javiya

Reputation: 5222

Try this,

Include jQuery and use following snippet.

$(document).ready(function(){
    $("form").submit(function(){
        $("input").each(function(index, obj){
            if($(obj).val() == "") {
                $(obj).remove();
            }
        });
    });
});

Upvotes: 20

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