Chart.JS的条形图的mousein和mouseout事件? [英] Event on Chart.JS's Bar Chart's mousein and mouseout?
本文介绍了Chart.JS的条形图的mousein和mouseout事件?的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!
问题描述
我已经搜索了条形图和事件文档(我觉得有点困惑),我一直将鼠标悬停在条形图的条形图上(而不是图例!)时,无法弄清楚如何处理mousein和mouseout事件.目前,我能找到的最接近的是利用工具提示上的回调,如下所示:
I've scoured the bar chart and event docs (which I find a bit confusing) and I've been unable to figure out how to act on a mousein and mouseout event when hovering over a Bar chart's bars (not the legend!). Currently the closest I've been able to come is utilizing the callback on the tooltip like so:
options.tooltips = {
backgroundColor: 'rgba(0,0,0,0)',
fontColor: 'rgba(0,0,0,0)',
callbacks: {
label: function (tooltipItem) {
// flipping a bool here
}
}
};
此解决方案效果不佳,因为不知道指针何时离开该条,我不知道何时将布尔值向后翻转.这可能吗?
This solution doesn't work well because without knowing when the pointer leaves the bar I don't know when to flip the bool back. Is this possible?
推荐答案
以下是我的问题的解决方案:
Here's a solution to my issue:
options.tooltips = {
// Hide the tooltips
backgroundColor: 'rgba(0,0,0,0)',
displayColors: false,
callbacks: {
labelTextColor: function () {
return 'rgba(0,0,0,0)';
},
labelColor: function () {
return {
borderColor: 'rgba(0, 0, 0, 0)',
backgroundColor: 'rgba(0, 0, 0, 0)'
}
}
},
// Highlight the HTML elements on bar hover
custom: function(tooltipModel) {
if (tooltipModel.body === undefined) {
// flip bool false
return;
}
if (/* ... */) {
// flip bool true
}
return;
}
};
这篇关于Chart.JS的条形图的mousein和mouseout事件?的文章就介绍到这了,希望我们推荐的答案对大家有所帮助,也希望大家多多支持IT屋!
查看全文