Is it possible to write legend to a separate division with jqPlot

问题

I want to write the legend to a separate div, is this possible with jqPlot

legend: { 
   show: true,
   placement: 'outside',
   fontSize: '11px',
   location: 'n'
}

回答1:

Here our the two function which you can use:

function graphLegendCreation(cnt){
    var parentNode = _g("dmGraphLegend")//trying to get the div element with id dmGraphLegend
        , newLegendItemNode = Util.ce("span") //creating an span element
        , newLegendItemSelect = Util.cep("input", { //creating an input element
            "type":"checkbox",
            "name":"graphLegend",
            "checked":true,
            "value":cnt
        })
        , newLegendItemIconNode = Util.cep("canvas", {
            "id":"series_icon_"+cnt,
            "className":"series_icons"
        });
        newLegendItemIconNode.style.display = "inline-block";
        newLegendItemIconNode.style.position = "relative";
        if(parentNode) {
            newLegendItemNode.innerHTML = graphPlot.series[cnt].label; 
            newLegendItemSelect = Util.ac(newLegendItemSelect,parentNode);
            newLegendItemSelect.checked = true;

            Util.addEvent(newLegendItemSelect,"click", function(e) {
                graphPlot.series[this.value].show = newLegendItemSelect.checked;
                graphPlot.redraw(false);
            })
            newLegendItemIconNode = Util.ac(newLegendItemIconNode,parentNode);
            newLegendItemNode = Util.ac(newLegendItemNode,parentNode);
            Util.ac(Util.ce("br"),parentNode);
        }
}


function showlegend() {
    var cntr = 0
    ,len = 0
    ,iconNodes
    ,legendItemIconNode
    ,seriesSequence = 0
    ,context
    ,bMarker;

        iconNodes = Util.Style.g("series_icons");
        len = iconNodes.length;
        for(cntr = 0; cntr < len; cntr++) {
            legendItemIconNode = iconNodes[cntr];
            if ($.browser.msie) {
                G_vmlCanvasManager.initElement(legendItemIconNode);
            }
            context = legendItemIconNode.getContext('2d');
            bMarker = new nMarkerRenderer({
                size:8,
                color:graphPlot.series[cntr].color,
                style:graphPlot.series[cntr].markerOptions.style
            });
            bMarker.draw(12,12,context, {});
        }

}

CSS: .series_icons{width:20px;height:20px;}

GraphLegendCreation function you have to call that each time you create a entry inside legend. ShowLegend is just going to create that legend icons.

The "nMarkrenderer" is already a defined function. Get that function from jsfiddle file

Let me know you want more help with this. It works for sure on IE. tried and tested

来源：https://stackoverflow.com/questions/16832218/is-it-possible-to-write-legend-to-a-separate-division-with-jqplot

标签

javascript

jquery

jqplot