如何在Chart.js中显示工具提示？

Question

在本教程之后,此代码绘制折线图,​​但没有工具提示.我在这里错过了一些配置选项吗？在教程中有工具提示出现.

var chartData = {
    labels: ["January", "February", "March", "April", "May", "June", "July"],
    datasets: [
        {
            label: "My Second dataset",
            fillColor: "rgba(151,187,205,0.2)",
            strokeColor: "rgba(151,187,205,1)",
            pointColor: "rgba(151,187,205,1)",
            pointStrokeColor: "#fff",
            pointHighlightFill: "#fff",
            pointHighlightStroke: "rgba(151,187,205,1)",
            data: [28, 48, 40, 19, 86, 27, 90]
        }
    ]
};

var ctx = document.getElementById("chart").getContext("2d");
var myNewChart = new Chart(ctx).Line(chartData, {
    showTooltip: true,
    tooltipTemplate: "<%= value %>"
});

Answer 1

你使用的是什么版本的chart.js？

我可以确认工具提示使用v1.0.1-beta2

<script src="//cdnjs.cloudflare.com/ajax/libs/Chart.js/1.0.1-beta.2/Chart.min.js"></script>

但是不能使用v0.2.0.

版本1.0.1-beta2可从cdnjs获得.