让我尝试解释一下问题的技术细节:
目标:在鼠标悬停在图例上时显示自定义文本。
我有一个DevExtreme jQuery chart，我需要在图例鼠标悬停时在dxTooltip中显示一些自定义文本
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<svg xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" version="1.1" fill="none" stroke="none" stroke-width="0" class="dxc dxc-chart" style="line-height:normal;-ms-user-select:none;-moz-user-select:none;-webkit-user-select:none;-webkit-tap-highlight-color:rgba(0, 0, 0, 0);display:block;overflow:hidden;touch-action:pan-x pan-y pinch-zoom;-ms-touch-action:pan-x pan-y pinch-zoom;" width="446" height="350" onclick="void(0)" direction="ltr"><defs><clipPath id="DevExpress_66"><rect x="0" y="0" width="446" height="345" transform="translate(0,0)"></rect></clipPath><pattern id="DevExpress_77" width="5" height="5" patternUnits="userSpaceOnUse"><rect x="0" y="0" width="5" height="5" transform="translate(0,0)" fill="#ffa500" opacity="0.75"></rect><path d="M 2.5 -2.5 L -2.5 2.5 M 0 5 L 5 0 M 7.5 2.5 L 2.5 7.5" stroke-width="2" stroke="#ffa500" transform="translate(0,0)"></path></pattern><pattern id="DevExpress_78" width="5" height="5" patternUnits="userSpaceOnUse"><rect 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transform="translate(0,0)"><g transform="translate(105,303)"><rect x="0" y="0" width="12" height="12" transform="translate(5,0)" fill="#ffa500" aria-describedby="97b142ed-caf7-4617-68d7-f34ed9a0ec27"></rect><text x="0" y="0" transform="translate(11,29)" style="fill:#767676;font-family:'Segoe UI', 'Helvetica Neue', 'Trebuchet MS', Verdana;font-weight:400;font-size:12px;cursor:default;" text-anchor="middle" title="AET">AET</text><rect x="0" y="0" width="12" height="12" transform="translate(51,0)" fill="red" aria-describedby="456ea7c6-7ff1-4d4a-22c1-2ebe97b7a184"></rect><text x="0" y="0" transform="translate(57,29)" style="fill:#767676;font-family:'Segoe UI', 'Helvetica Neue', 'Trebuchet MS', Verdana;font-weight:400;font-size:12px;cursor:default;" text-anchor="middle" title="BLTX">BLTX</text><rect x="0" y="0" width="12" height="12" transform="translate(103,0)" fill="green" aria-describedby="d134e27b-d152-d4db-bb3c-98bac2226892"></rect><text x="0" y="0" transform="translate(109,29)" style="fill:#767676;font-family:'Segoe UI', 'Helvetica Neue', 'Trebuchet MS', Verdana;font-weight:400;font-size:12px;cursor:default;" text-anchor="middle" title="MSCT">MSCT</text><rect x="0" y="0" width="12" height="12" transform="translate(158,0)" fill="blue" aria-describedby="de338510-8bbd-a2d4-23d3-77cbd2f5366e"></rect><text x="0" y="0" transform="translate(164,29)" style="fill:#767676;font-family:'Segoe UI', 'Helvetica Neue', 'Trebuchet MS', Verdana;font-weight:400;font-size:12px;cursor:default;" text-anchor="middle" title="NOSO">NOSO</text><rect x="0" y="0" width="12" height="12" transform="translate(213,0)" fill="#955f71" aria-describedby="585db841-08fd-54c7-3baf-5831c993b4a6"></rect><text x="0" y="0" transform="translate(219,29)" style="fill:#767676;font-family:'Segoe UI', 'Helvetica Neue', 'Trebuchet MS', Verdana;font-weight:400;font-size:12px;cursor:default;" text-anchor="middle" title="UHCR">UHCR</text></g></g></svg>通过操作 onTooltipShown event ，我成功地在点鼠标悬停时显示带有自定义文本的工具提示。另外，this Google search result 也不是我们需要的。
onTooltipShown: function (e) {
var marker = e.target;
$(".tooltip-container").html("Argument: "+marker.argument + "<br/>Series name:" + GetFullSeriesName(marker.series.name) + "<br/>Value: " + parseInt(marker.value) + "<br/>Tag: " + marker.tag)
}
我尝试使用 dxTooltip control 来实现图例鼠标悬停:
function ShowFullPayerName() {
var PayerLegendBoxes = $("#chartContainer4 .dxc-legend g rect");
var PayerLegends = $("#chartContainer4 .dxc-legend g text");
var chart = $("#chartContainer4").dxChart();
PayerLegendBoxes.each(function () {
var nextElementHTML = this.nextSibling.innerHTML;
var currElementTip = nextElementHTML + "tip";
var currElement = this;
var title = chart.append("<span id=" + currElementTip + ">" + nextElementHTML + "</span>");
var tooltipSimple = $("#" + currElementTip).dxTooltip({
target: currElement,
content:"test"
}).dxTooltip("instance");
$(currElement).unbind().hover(function () { tooltipSimple.toggle() });
});
PayerLegends.each(function () {
var title = $(this).attr("title", this.innerHTML);
});
}
I'm not able to find a way to access
dxChart's tool tip from outside.
有没有办法从外部访问dxChart's tool tip？ (也许在 dxTooltip control 内部)
最佳答案
您可以更改图表tooltip option :
var chartInstance = $("#chartContainer4").dxChart("instance");
var tooltip = chartInstance.option("tooltip");
tooltip.color = "red";
chartInstance.option("tooltip", tooltip);
关于javascript - 有没有办法从外部访问 dxChart 工具提示？，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/38272117/