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Thread: Input range, rounding "bug" problems

  1. #1
    Join Date
    Aug 2012
    Posts
    10

    Input range, rounding "bug" problems

    I have notised rounding problems
    but donīt know how to solve them


    Code:
    <script src="jquery-1.8.0.min.js"></script>
    <script>
    	 $(function() {
    	   var el, newPoint, newPlace, offset;
    	   $("input[type='range']").change(function() {
    	     el = $(this);
    	     width = el.width();
    	     newPoint = (el.val() - el.attr("min")) / (el.attr("max") - el.attr("min"));
    	     offset = -1.3;
    	     if (newPoint < 0) { newPlace = 0;  }
    	     else if (newPoint > 1) { newPlace = width; }
    	     else { newPlace = width * newPoint + offset; offset -= newPoint;}
    	     el
    	       .next("output")
    	       .css({
    	         left: newPlace,
    	         marginLeft: offset + "%"
    	       })
    	       .text(el.val());
    	   })
    	   .trigger('change');
    	 });
    	</script>
        
        <script type="text/javascript"><!--
    function updatesum() {
    document.form.sum.value = parseFloat(document.form.sum1.value) * parseFloat(document.form.sum2.value) / 10 }
    //--></script>
    
    
    
    <form name="form">
    <div>
    <input id="sum1" onChange="updatesum()" name="sum1" type="range" step="0.1" min=0 max=20 value=0 style="width: 100%;">Sum1
          
    <output for="sum1">1</output>
    </div>
    
    <div>
    <input id="sum2" onChange="updatesum()" name="sum2" type="range" step="0.5" min=1 max=10 value=2 style="width: 100%;">Sum2
    
    <output for="sum2">1</output>
    </div>
    
    <div>
    Total sum
    <input name="sum" type="text" value="0" size="5" readonly>  
    </div>

  2. #2
    Join Date
    Aug 2012
    Posts
    10
    Examples of the rounding problem
    the slider give me this

    0
    0.1
    0.2
    0.30000000000000004
    0.4
    0.5
    0.6000000000000001
    0.7000000000000001
    0.8
    0.9
    1

  3. #3
    Join Date
    May 2004
    Location
    Manhattan NY
    Posts
    6,028
    .toFixed(1) on the output should fix it.

  4. #4
    Join Date
    Aug 2012
    Posts
    10
    Quote Originally Posted by JPnyc View Post
    .toFixed(1) on the output should fix it.
    Yes, my frient google told me that to just
    but I realy donīt know how to
    can you give me a example

  5. #5
    Join Date
    Aug 2012
    Posts
    10
    Changed this code, and now the input name="sum" works
    but how to fix this for the two outputs ?

    Code:
    document.form.sum.value = parseFloat(document.form.sum1.value) * parseFloat(document.form.sum2.value) / 10 }
    
    document.form.sum.value = (parseFloat(document.form.sum1.value) * parseFloat(document.form.sum2.value) / 10).toFixed(2); }

  6. #6
    Join Date
    May 2004
    Location
    Manhattan NY
    Posts
    6,028
    You only need it for your final output. It'll force a round-up and fixed dec. places, whatever # you set.

  7. #7
    Join Date
    Aug 2012
    Posts
    10
    My first code didnīt work with most mobilephones and some browsers
    the sliders didnīt work so I made this instead, but my Javascript skills ar not to good
    so I cant find out how to to get the sum in the last Div witout a submit button

    Code:
    <script>
            $(function() {
              $( "#slider1" ).slider({
                value:0,
                min: 0,
                max: 20,
                step: 0.1,
                slide: function( event, ui ) {
                  $( "#sum1" ).val( ui.value + " l");
                }
              });
              $( "#sum1" ).val( $( "#slider1" ).slider( "value" )  +" l");
            });
            </script>
            
            <script>
            $(function() {
              $( "#slider2" ).slider({
                value:0,
                min: 0,
                max: 10,
                step: 0.5,
                slide: function( event, ui ) {
                  $( "#sum2" ).val( ui.value + " %");
                }
              });
              $( "#sum2" ).val( $( "#slider2" ).slider( "value" )  +" %");
            });
            </script>
    
    
    <script type="text/javascript"><!--
    function updatesum() {
    document.form.sum.value = (parseFloat(document.form.sum1.value) * parseFloat(document.form.sum2.value) / 10).toFixed(2); }
    //--></script>
    
        
       <form name="form">
            <div>
            <input type="text" onChange="updatesum()" name="sum1" id="sum1" style="border:0; font-weight:bold;" />
            <div id="slider1"></div>
            </div>
    
           <div>
            <input type="text" onChange="updatesum()" name="sum2" id="sum2" style="border:0; font-weight:bold;" />
            <div id="slider2"></div>
            </div>
    
    <div>   
    <input name="sum" type="text" value="0" size="5" readonly>  
     </div>
        </form>

  8. #8
    Join Date
    Aug 2012
    Posts
    10
    Se new thred instead

  9. #9
    Join Date
    Aug 2012
    Posts
    10

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