我想在 jqplot 中有一个工具提示悬停突出显示的东西。问题是我希望它在轴上提供更多细节。所以格式化程序应该不同。我无法让它显示秒数：
这里有一个 JS 文件！
我希望时间戳显示为小时：分钟：秒，这将是格式字符串“%H:%M:%S”或“%T”或“%X”。但是我该怎么做呢？
highlighter: {
show: true,
sizeAdjust: 3,
//useAxesFormatters: false,
//tooltipFormatString: '%H:%M:%S',
formatString: '<table class="jqplot-highlighter"><tr><td>tijd:</td><td>%s</td></tr><tr><td>snelheid:</td><td>%s</td></tr></table>',
},
这个问题很老，但我一直在寻找相同的问题，并且有一个选项（即使在此处使用的版本中）可以做到：
http://jsfiddle.net/coma/DWFTb/151/
highlighter: {
show: true,
sizeAdjust: 3,
tooltipContentEditor: function(str, seriesIndex, pointIndex, jqPlot) {
return series[seriesIndex][pointIndex][0];
}
}...
我希望这对其他人有帮助。
我正在寻找同样的问题，不幸的是还没有答案。我带来的丑陋解决方案是修改 jqplot.highlighter.js 以获得我想要的。这是我如何做到的，
声明 xAxisFormatString 和 yAxisFormatString 属性
// prop: xAxisFormatString
// If this is provided then it will override the axesformatter format string
this.xAxisFormatString = '';
// prop: xAxisFormatString
// If this is provided then it will override the axesformatter format string
this.yAxisFormatString = '';
然后在 showtooltip 方法中使用 this 而不是轴格式字符串
var xfstr = series._xaxis._ticks[0].formatString;
if('' != hl.xAxisFormatString) {
xfstr = hl.xAxisFormatString;
}
var yfstr = series._yaxis._ticks[0].formatString;
if('' != hl.yAxisFormatString) {
yfstr = hl.yAxisFormatString;
}
调用图表时，
highlighter: {
show: true,
useAxesFormatters: true,
xAxisFormatString: '%m-%Y',
formatString: 'hi - %s',
sizeAdjust: 7.5
},
我有 useAxesFormatters true 因为我不想弄乱工具提示格式字符串。我可以使用相同的格式化程序，但我想覆盖格式化字符串。这样我就可以正常工作了。
这是完整的 jqplot.highlighter.js
/**
* jqPlot
* Pure JavaScript plotting plugin using jQuery
*
* Version: 1.0.0b2_r792
*
* Copyright (c) 2009-2011 Chris Leonello
* jqPlot is currently available for use in all personal or commercial projects
* under both the MIT (http://www.opensource.org/licenses/mit-license.php) and GPL
* version 2.0 (http://www.gnu.org/licenses/gpl-2.0.html) licenses. This means that you can
* choose the license that best suits your project and use it accordingly.
*
* Although not required, the author would appreciate an email letting him
* know of any substantial use of jqPlot. You can reach the author at:
* chris at jqplot dot com or see http://www.jqplot.com/info.php .
*
* If you are feeling kind and generous, consider supporting the project by
* making a donation at: http://www.jqplot.com/donate.php .
*
* sprintf functions contained in jqplot.sprintf.js by Ash Searle:
*
* version 2007.04.27
* author Ash Searle
* http://hexmen.com/blog/2007/03/printf-sprintf/
* http://hexmen.com/js/sprintf.js
* The author (Ash Searle) has placed this code in the public domain:
* "This code is unrestricted: you are free to use it however you like."
*
*/
(function($) {
$.jqplot.eventListenerHooks.push(['jqplotMouseMove', handleMove]);
/**
* Class: $.jqplot.Highlighter
* Plugin which will highlight data points when they are moused over.
*
* To use this plugin, include the js
* file in your source:
*
* > <script type="text/javascript" src="plugins/jqplot.highlighter.js"></script>
*
* A tooltip providing information about the data point is enabled by default.
* To disable the tooltip, set "showTooltip" to false.
*
* You can control what data is displayed in the tooltip with various
* options. The "tooltipAxes" option controls wether the x, y or both
* data values are displayed.
*
* Some chart types (e.g. hi-low-close) have more than one y value per
* data point. To display the additional values in the tooltip, set the
* "yvalues" option to the desired number of y values present (3 for a hlc chart).
*
* By default, data values will be formatted with the same formatting
* specifiers as used to format the axis ticks. A custom format code
* can be supplied with the tooltipFormatString option. This will apply
* to all values in the tooltip.
*
* For more complete control, the "formatString" option can be set. This
* Allows conplete control over tooltip formatting. Values are passed to
* the format string in an order determined by the "tooltipAxes" and "yvalues"
* options. So, if you have a hi-low-close chart and you just want to display
* the hi-low-close values in the tooltip, you could set a formatString like:
*
* > highlighter: {
* > tooltipAxes: 'y',
* > yvalues: 3,
* > formatString:'<table class="jqplot-highlighter">
* > <tr><td>hi:</td><td>%s</td></tr>
* > <tr><td>low:</td><td>%s</td></tr>
* > <tr><td>close:</td><td>%s</td></tr></table>'
* > }
*
*/
$.jqplot.Highlighter = function(options) {
// Group: Properties
//
//prop: show
// true to show the highlight.
this.show = $.jqplot.config.enablePlugins;
// prop: markerRenderer
// Renderer used to draw the marker of the highlighted point.
// Renderer will assimilate attributes from the data point being highlighted,
// so no attributes need set on the renderer directly.
// Default is to turn off shadow drawing on the highlighted point.
this.markerRenderer = new $.jqplot.MarkerRenderer({shadow:false});
// prop: showMarker
// true to show the marker
this.showMarker = true;
// prop: lineWidthAdjust
// Pixels to add to the lineWidth of the highlight.
this.lineWidthAdjust = 2.5;
// prop: sizeAdjust
// Pixels to add to the overall size of the highlight.
this.sizeAdjust = 5;
// prop: showTooltip
// Show a tooltip with data point values.
this.showTooltip = true;
// prop: tooltipLocation
// Where to position tooltip, 'n', 'ne', 'e', 'se', 's', 'sw', 'w', 'nw'
this.tooltipLocation = 'nw';
// prop: fadeTooltip
// true = fade in/out tooltip, flase = show/hide tooltip
this.fadeTooltip = true;
// prop: tooltipFadeSpeed
// 'slow', 'def', 'fast', or number of milliseconds.
this.tooltipFadeSpeed = "fast";
// prop: tooltipOffset
// Pixel offset of tooltip from the highlight.
this.tooltipOffset = 2;
// prop: tooltipAxes
// Which axes to display in tooltip, 'x', 'y' or 'both', 'xy' or 'yx'
// 'both' and 'xy' are equivalent, 'yx' reverses order of labels.
this.tooltipAxes = 'both';
// prop; tooltipSeparator
// String to use to separate x and y axes in tooltip.
this.tooltipSeparator = ', ';
// prop; tooltipContentEditor
// Function used to edit/augment/replace the formatted tooltip contents.
// Called as str = tooltipContentEditor(str, seriesIndex, pointIndex)
// where str is the generated tooltip html and seriesIndex and pointIndex identify
// the data point being highlighted. Should return the html for the tooltip contents.
this.tooltipContentEditor = null;
// prop: useAxesFormatters
// Use the x and y axes formatters to format the text in the tooltip.
this.useAxesFormatters = true;
// prop: xAxisFormatString
// If this is provided then it will override the axesformatter format string
this.xAxisFormatString = '';
// prop: xAxisFormatString
// If this is provided then it will override the axesformatter format string
this.yAxisFormatString = '';
// prop: tooltipFormatString
// sprintf format string for the tooltip.
// Uses Ash Searle's javascript sprintf implementation
// found here: http://hexmen.com/blog/2007/03/printf-sprintf/
// See http://perldoc.perl.org/functions/sprintf.html for reference.
// Additional "p" and "P" format specifiers added by Chris Leonello.
this.tooltipFormatString = '%.5P';
// prop: formatString
// alternative to tooltipFormatString
// will format the whole tooltip text, populating with x, y values as
// indicated by tooltipAxes option. So, you could have a tooltip like:
// 'Date: %s, number of cats: %d' to format the whole tooltip at one go.
// If useAxesFormatters is true, values will be formatted according to
// Axes formatters and you can populate your tooltip string with
// %s placeholders.
this.formatString = null;
// prop: yvalues
// Number of y values to expect in the data point array.
// Typically this is 1. Certain plots, like OHLC, will
// have more y values in each data point array.
this.yvalues = 1;
// prop: bringSeriesToFront
// This option requires jQuery 1.4+
// True to bring the series of the highlighted point to the front
// of other series.
this.bringSeriesToFront = false;
this._tooltipElem;
this.isHighlighting = false;
$.extend(true, this, options);
};
var locations = ['nw', 'n', 'ne', 'e', 'se', 's', 'sw', 'w'];
var locationIndicies = {'nw':0, 'n':1, 'ne':2, 'e':3, 'se':4, 's':5, 'sw':6, 'w':7};
var oppositeLocations = ['se', 's', 'sw', 'w', 'nw', 'n', 'ne', 'e'];
// axis.renderer.tickrenderer.formatter
// called with scope of plot
$.jqplot.Highlighter.init = function (target, data, opts){
var options = opts || {};
// add a highlighter attribute to the plot
this.plugins.highlighter = new $.jqplot.Highlighter(options.highlighter);
};
// called within scope of series
$.jqplot.Highlighter.parseOptions = function (defaults, options) {
// Add a showHighlight option to the series
// and set it to true by default.
this.showHighlight = true;
};
// called within context of plot
// create a canvas which we can draw on.
// insert it before the eventCanvas, so eventCanvas will still capture events.
$.jqplot.Highlighter.postPlotDraw = function() {
// Memory Leaks patch
if (this.plugins.highlighter && this.plugins.highlighter.highlightCanvas) {
this.plugins.highlighter.highlightCanvas.resetCanvas();
this.plugins.highlighter.highlightCanvas = null;
}
if (this.plugins.highlighter && this.plugins.highlighter._tooltipElem) {
this.plugins.highlighter._tooltipElem.emptyForce();
this.plugins.highlighter._tooltipElem = null;
}
this.plugins.highlighter.highlightCanvas = new $.jqplot.GenericCanvas();
this.eventCanvas._elem.before(this.plugins.highlighter.highlightCanvas.createElement(this._gridPadding, 'jqplot-highlight-canvas', this._plotDimensions, this));
this.plugins.highlighter.highlightCanvas.setContext();
var elem = document.createElement('div');
this.plugins.highlighter._tooltipElem = $(elem);
elem = null;
this.plugins.highlighter._tooltipElem.addClass('jqplot-highlighter-tooltip');
this.plugins.highlighter._tooltipElem.css({position:'absolute', display:'none'});
this.eventCanvas._elem.before(this.plugins.highlighter._tooltipElem);
};
$.jqplot.preInitHooks.push($.jqplot.Highlighter.init);
$.jqplot.preParseSeriesOptionsHooks.push($.jqplot.Highlighter.parseOptions);
$.jqplot.postDrawHooks.push($.jqplot.Highlighter.postPlotDraw);
function draw(plot, neighbor) {
var hl = plot.plugins.highlighter;
var s = plot.series[neighbor.seriesIndex];
var smr = s.markerRenderer;
var mr = hl.markerRenderer;
mr.style = smr.style;
mr.lineWidth = smr.lineWidth + hl.lineWidthAdjust;
mr.size = smr.size + hl.sizeAdjust;
var rgba = $.jqplot.getColorComponents(smr.color);
var newrgb = [rgba[0], rgba[1], rgba[2]];
var alpha = (rgba[3] >= 0.6) ? rgba[3]*0.6 : rgba[3]*(2-rgba[3]);
mr.color = 'rgba('+newrgb[0]+','+newrgb[1]+','+newrgb[2]+','+alpha+')';
mr.init();
mr.draw(s.gridData[neighbor.pointIndex][0], s.gridData[neighbor.pointIndex][1], hl.highlightCanvas._ctx);
}
function showTooltip(plot, series, neighbor) {
// neighbor looks like: {seriesIndex: i, pointIndex:j, gridData:p, data:s.data[j]}
// gridData should be x,y pixel coords on the grid.
// add the plot._gridPadding to that to get x,y in the target.
var hl = plot.plugins.highlighter;
var elem = hl._tooltipElem;
if (hl.useAxesFormatters) {
var xf = series._xaxis._ticks[0].formatter;
var yf = series._yaxis._ticks[0].formatter;
var xfstr = series._xaxis._ticks[0].formatString;
if('' != hl.xAxisFormatString)
xfstr = hl.xAxisFormatString;
var yfstr = series._yaxis._ticks[0].formatString;
if('' != hl.yAxisFormatString)
yfstr = hl.yAxisFormatString;
var str;
var xstr = xf(xfstr, neighbor.data[0]);
var ystrs = [];
for (var i=1; i<hl.yvalues+1; i++) {
ystrs.push(yf(yfstr, neighbor.data[i]));
}
if (hl.formatString) {
switch (hl.tooltipAxes) {
case 'both':
case 'xy':
ystrs.unshift(xstr);
ystrs.unshift(hl.formatString);
str = $.jqplot.sprintf.apply($.jqplot.sprintf, ystrs);
break;
case 'yx':
ystrs.push(xstr);
ystrs.unshift(hl.formatString);
str = $.jqplot.sprintf.apply($.jqplot.sprintf, ystrs);
break;
case 'x':
str = $.jqplot.sprintf.apply($.jqplot.sprintf, [hl.formatString, xstr]);
break;
case 'y':
ystrs.unshift(hl.formatString);
str = $.jqplot.sprintf.apply($.jqplot.sprintf, ystrs);
break;
default: // same as xy
ystrs.unshift(xstr);
ystrs.unshift(hl.formatString);
str = $.jqplot.sprintf.apply($.jqplot.sprintf, ystrs);
break;
}
}
else {
switch (hl.tooltipAxes) {
case 'both':
case 'xy':
str = xstr;
for (var i=0; i<ystrs.length; i++) {
str += hl.tooltipSeparator + ystrs[i];
}
break;
case 'yx':
str = '';
for (var i=0; i<ystrs.length; i++) {
str += ystrs[i] + hl.tooltipSeparator;
}
str += xstr;
break;
case 'x':
str = xstr;
break;
case 'y':
str = ystrs.join(hl.tooltipSeparator);
break;
default: // same as 'xy'
str = xstr;
for (var i=0; i<ystrs.length; i++) {
str += hl.tooltipSeparator + ystrs[i];
}
break;
}
}
}
else {
var str;
if (hl.tooltipAxes == 'both' || hl.tooltipAxes == 'xy') {
str = $.jqplot.sprintf(hl.tooltipFormatString, neighbor.data[0]) + hl.tooltipSeparator + $.jqplot.sprintf(hl.tooltipFormatString, neighbor.data[1]);
}
else if (hl.tooltipAxes == 'yx') {
str = $.jqplot.sprintf(hl.tooltipFormatString, neighbor.data[1]) + hl.tooltipSeparator + $.jqplot.sprintf(hl.tooltipFormatString, neighbor.data[0]);
}
else if (hl.tooltipAxes == 'x') {
str = $.jqplot.sprintf(hl.tooltipFormatString, neighbor.data[0]);
}
else if (hl.tooltipAxes == 'y') {
str = $.jqplot.sprintf(hl.tooltipFormatString, neighbor.data[1]);
}
}
if ($.isFunction(hl.tooltipContentEditor)) {
// args str, seriesIndex, pointIndex are essential so the hook can look up
// extra data for the point.
str = hl.tooltipContentEditor(str, neighbor.seriesIndex, neighbor.pointIndex, plot);
}
elem.html(str);
var gridpos = {x:neighbor.gridData[0], y:neighbor.gridData[1]};
var ms = 0;
var fact = 0.707;
if (series.markerRenderer.show == true) {
ms = (series.markerRenderer.size + hl.sizeAdjust)/2;
}
var loc = locations;
if (series.fillToZero && series.fill && neighbor.data[1] < 0) {
loc = oppositeLocations;
}
switch (loc[locationIndicies[hl.tooltipLocation]]) {
case 'nw':
var x = gridpos.x + plot._gridPadding.left - elem.outerWidth(true) - hl.tooltipOffset - fact * ms;
var y = gridpos.y + plot._gridPadding.top - hl.tooltipOffset - elem.outerHeight(true) - fact * ms;
break;
case 'n':
var x = gridpos.x + plot._gridPadding.left - elem.outerWidth(true)/2;
var y = gridpos.y + plot._gridPadding.top - hl.tooltipOffset - elem.outerHeight(true) - ms;
break;
case 'ne':
var x = gridpos.x + plot._gridPadding.left + hl.tooltipOffset + fact * ms;
var y = gridpos.y + plot._gridPadding.top - hl.tooltipOffset - elem.outerHeight(true) - fact * ms;
break;
case 'e':
var x = gridpos.x + plot._gridPadding.left + hl.tooltipOffset + ms;
var y = gridpos.y + plot._gridPadding.top - elem.outerHeight(true)/2;
break;
case 'se':
var x = gridpos.x + plot._gridPadding.left + hl.tooltipOffset + fact * ms;
var y = gridpos.y + plot._gridPadding.top + hl.tooltipOffset + fact * ms;
break;
case 's':
var x = gridpos.x + plot._gridPadding.left - elem.outerWidth(true)/2;
var y = gridpos.y + plot._gridPadding.top + hl.tooltipOffset + ms;
break;
case 'sw':
var x = gridpos.x + plot._gridPadding.left - elem.outerWidth(true) - hl.tooltipOffset - fact * ms;
var y = gridpos.y + plot._gridPadding.top + hl.tooltipOffset + fact * ms;
break;
case 'w':
var x = gridpos.x + plot._gridPadding.left - elem.outerWidth(true) - hl.tooltipOffset - ms;
var y = gridpos.y + plot._gridPadding.top - elem.outerHeight(true)/2;
break;
default: // same as 'nw'
var x = gridpos.x + plot._gridPadding.left - elem.outerWidth(true) - hl.tooltipOffset - fact * ms;
var y = gridpos.y + plot._gridPadding.top - hl.tooltipOffset - elem.outerHeight(true) - fact * ms;
break;
}
elem.css('left', x);
elem.css('top', y);
if (hl.fadeTooltip) {
// Fix for stacked up animations. Thnanks Trevor!
elem.stop(true,true).fadeIn(hl.tooltipFadeSpeed);
}
else {
elem.show();
}
elem = null;
}
function handleMove(ev, gridpos, datapos, neighbor, plot) {
var hl = plot.plugins.highlighter;
var c = plot.plugins.cursor;
if (hl.show) {
if (neighbor == null && hl.isHighlighting) {
var ctx = hl.highlightCanvas._ctx;
ctx.clearRect(0, 0, ctx.canvas.width, ctx.canvas.height);
if (hl.fadeTooltip) {
hl._tooltipElem.fadeOut(hl.tooltipFadeSpeed);
}
else {
hl._tooltipElem.hide();
}
if (hl.bringSeriesToFront) {
plot.restorePreviousSeriesOrder();
}
hl.isHighlighting = false;
ctx = null;
}
else if (neighbor != null && plot.series[neighbor.seriesIndex].showHighlight && !hl.isHighlighting) {
hl.isHighlighting = true;
if (hl.showMarker) {
draw(plot, neighbor);
}
if (hl.showTooltip && (!c || !c._zoom.started)) {
showTooltip(plot, plot.series[neighbor.seriesIndex], neighbor);
}
if (hl.bringSeriesToFront) {
plot.moveSeriesToFront(neighbor.seriesIndex);
}
}
}
}
})(jQuery);
我尝试使用昏迷的答案，但首先将其修改为：
return jqPlot.series[seriesIndex]._plotData[pointIndex][0];
这是一个hack（因为它使用_plotData），然后将其更改为
return jqPlot.data[seriesIndex][pointIndex][0];
这应该没问题。
如果你想使用荧光笔，你可以通过将格式设置tickOptions为荧光笔使用的格式来快速获得想要的结果。
否则，您必须为自己服务，如此jqplotMouseMove处所示。