我修改IECS的答案与chartjs工作2.7.1
var that = this;
this.chart = new Chart($("#chart"), {
type: 'bar',
data: {
labels: labels,
datasets: datasets
},
options: {
events: ["mousemove", "mouseout", "click", "touchstart", "touchmove", "touchend"],
onClick: function(e, data) {
var ctx = $("#chart")[0].getContext("2d");
var base = that.chart.chartArea.bottom;
var height = that.chart.chart.height;
var width = that.chart.chart.scales['x-axis-0'].width;
var offset = $('#chart').offset().top - $(window).scrollTop();
if(e.pageY > base + offset){
var count = that.chart.scales['x-axis-0'].ticks.length;
var padding_left = that.chart.scales['x-axis-0'].paddingLeft;
var padding_right = that.chart.scales['x-axis-0'].paddingRight;
var xwidth = (width-padding_left-padding_right)/count;
// don't call for padding areas
var bar_index = (e.offsetX - padding_left - that.chart.scales['y-axis-0'].width)/xwidth;
if(bar_index > 0 & bar_index < count){
bar_index = Math.floor(bar_index);
console.log(bar_index);
}
}
}
}
});
的主要区别是:
- chartjs较新版本的使用chart.scales阵列,而不是图表.scale with a bunch of values
- 我不得不从x偏移量中减去chart.scales ['y-axis-0'] .width获得正确的bar_index
- 我改变parseInt函数来Math.floor,只是个人喜好
如果你想光标,当你将鼠标悬停在他们这个改变,“悬停”添加到事件阵列和选项:
onHover: function(e) {
var ctx = $("#chart")[0].getContext("2d");
var base = that.chart.chartArea.bottom;
var height = that.chart.chart.height;
var width = that.chart.chart.scales['x-axis-0'].width;
var yOffset = $('#chart').offset().top - $(window).scrollTop();
var xOffset = $('#chart').offset().left - $(window).scrollLeft();
var left = xOffset + that.chart.scales['x-axis-0'].paddingLeft + that.chart.scales['x-axis-0'].left;
var right = xOffset + that.chart.scales['x-axis-0'].paddingRight + that.chart.scales['x-axis-0'].left + width;
if(e.pageY > base + yOffset && e.pageX > left && e.pageX < right){
e.target.style.cursor = 'pointer';
}
else {
e.target.style.cursor = 'default';
}
}
我做了一些修改,但是你的逻辑很完美 - 谢谢你。也非常感谢您的代码中的评论! – user3236859
关于如何制作标签可搜索文本,您有任何建议吗?我希望能够在控制+ F浏览器搜索中找到它们。 – user3236859