Custom Tooltip on JQPlot Line Chart

Question

I am trying to get a custom tool tip for the line graph as I want the tool tip to describe the points in greater detail rather than the value of that point. (Image attached further explaining what I am on about)

I have given an attempt on how to do it.

Below is my code:

<script type="text/javascript">        $('#page3a').live('pageshow', function () {
        var s1 = [1, 2, 3, 4, 5];
        var s2 = ["Message 1", "Message 2", "Message 3", "Message 4", "Message 5"];

        var lineGraph1 = $.jqplot('lineGraph1', [s1,s2], {

            animate: true,
            seriesDefault: {
                showMarker: false,
                pointLabels: { show: true }
            },

            grid: {
                drawBorder: false,
                drawGridlines: false,
                background: '#eafaff',
                shadow: false
            },
            axesDefaults: {
                show: false,

                showTicks: false,
                showTickMarks: false

            },

            highlighter: {
                show: true,
                sizeAdjust: 8,
                tooltipLocation: 'n',
                tooltipAxes: 'piered',
               formatString:'%s',
                fadeTooltip: true,
                tooltipFadeSpeed: "fast",
                useAxesFormatters: false

            }

        });
    });</script>

Any help would be greatly appreciated. :)

Answer 1

There is a configuration option that allows you to provide a custom callback method that is called to retrieve the tooltip contents:

highlighter: {
    tooltipContentEditor: function (str, seriesIndex, pointIndex) {
        return str + "<br/> additional data";
    },

    // other options just for completeness
    show: true,
    showTooltip: true,
    tooltipFade: true,
    sizeAdjust: 10,
    formatString: '%s',
    tooltipLocation: 'n',
    useAxesFormatters: false,
}

Answer 2

I have made slight edits to nick_w's answer. But I have the desired effect now, just pasting the code to help others in the future.

<script type="text/javascript">     

   $('#page3a').live('pageshow', function () {
          var s1 = [1, 2, 3, 4, 5];
          var s2 = ["Message 1", "Message 2", "Message 3", "Message 4", "Message 5"];

          var lineGraph1 = $.jqplot('lineGraph1', [s1, s2], {

              animate: true,
              seriesDefault: {
                  showMarker: false,
                  pointLabels: { show: true }
              },

              grid: {
                  drawBorder: false,
                  drawGridlines: false,
                  background: '#eafaff',
                  shadow: false
              },
              axesDefaults: {
                  show: false,

                  showTicks: false,
                  showTickMarks: false

              }
          });

          $('#lineGraph1').bind('jqplotDataMouseOver', function (ev, seriesIndex, pointIndex, data) {

              var mouseX = ev.mouseX; //these are going to be how jquery knows where to put the div that will be our tooltip
              var mouseY = ev.mouseY;
              $('#chartpseudotooltip').html(s2[pointIndex] );
              var cssObj = {
                  'position': 'absolute',
                  'font-weight': 'bold',
                  'left': mouseX + 'px', //usually needs more offset here
                  'top': mouseY + 'px',
                  'background-color': 'white',
                  'z-index':'1'
              };
              $('#chartpseudotooltip').css(cssObj);

          });

          $('#lineGraph1').bind('jqplotDataUnhighlight', function (ev) {
              $('#chartpseudotooltip').html('');
          });
      });</script>

To call this script the following was added to my content div.

<div id="lineGraph1" style="margin-top: 20px; margin-left: 160px; width: 350px; height: 350px">
        <div id="chartpseudotooltip"></div>