CODEWITHSUNDEEP
javascriptphpjquerycodeigniter
Kavin Smk
Kavin Smk

Reputation: 800

Get the previous value of textbox

I have a text box for codeigniter shopping cart's qty.

<input type="text" id="txt-box_one<?php echo $items['id']; ?><?php echo $items['rowid'] ?>" value="<?php echo $items['qty']; ?> " class="small-txtbox">

I wrote a ajax function onmouseleave for the textbox div.

if the user enters text box value as 4at first and change it to 0 at second means i want to change the textbox value to 4 again.

js code: 

function chng(id,rowid,divid,pid,price,divtotal)
{
    var inc = $('#'+id).val();
    var upd = 'update';
    if(inc < 1)
  {
    // $('#'+id).val('1');
    var retVal = confirm("Are You Sure to Remove This Item From Baskets?");
   if( retVal == true ){
      var inc = 0;
   }
   else {   { $('#'+id).val(1); var inc = 1; }   }

  }

        $.ajax({
        type: "POST",
        data: "qty="+inc+"&row="+rowid+"&upd="+upd+"&pid="+pid+"&price="+price,
        url: "<?php echo base_url('grocery/text')?>",
        success: function(html){
        $('#'+divid).html(html);
        if( retVal == true ){
        location.reload();
        }
        }
    });

}

Upvotes: 1

Views: 2188

Answers (4)

Pratap Patil
Pratap Patil

Reputation: 234

You can do this using jQuery with something like :

jquery code:

<script type="text/javascript">
   $(document).ready(function(){
     $("#qty").change(function(){ 
        if($(this).val()<=0){            
            $(this).val($("#qtyold").val());
        }
        var ch_val=$(this).val();
        $("#qtyold").val(ch_val);
     });
  });
</script>

HTML Code:

<input type="text" id="qty" value=""  />

Please let me know if it's working

Upvotes: 0

Sathya
Sathya

Reputation: 5308

function getValue() {
    var val = $.trim($("#quantity").val());

    val = parseFloat(val);
    val = isNaN(val) ? 0 : val;

    return val;
}

$("#quantity")
.on("keyup", function() {
    var val = getValue();

    if (val) {
        $("#quantity").data("old-value", val)
    }
})
.on("blur", function(){
    var val = getValue();

    if (val == 0) {
        $("#quantity").val($("#quantity").data("old-value"));
    }
})

JsFiddle DEMO

Upvotes: 1

Amit Soni
Amit Soni

Reputation: 1427

You can try this jQuery approach also

var count;
$("#count").on("keyup",function(){
    if($(this).val() == 0)
        return;

    count = $(this).val();

});

$("#count").on("blur",function(){
    if($(this).val() == 0){
        $(this).val(count);
    }
});

DEMO

Upvotes: 1

cyber_rookie
cyber_rookie

Reputation: 665

In order to compare in this way, 

if(inc < 1)

you will have to parse it into an integer, so use

if(parseInt(inc) < 1)

Upvotes: 0

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