覆盖默认事件处理程序行为的正确方法是什么(例如单击时切换跟踪可见性)?

108238 plotly.js

var clickVal = Events.triggerHandler(gd, 'plotly_legendclick', evtData);
if(clickVal === false) return;

if(numClicks === 1) {
    legend._clickTimeout = setTimeout(function() {
        handleClick(legendItem, gd, numClicks);
    }, DBLCLICKDELAY);
}
else if(numClicks === 2) {
    if(legend._clickTimeout) clearTimeout(legend._clickTimeout);
    gd._legendMouseDownTime = 0;

    var dblClickVal = Events.triggerHandler(gd, 'plotly_legenddoubleclick', evtData);
    if(dblClickVal !== false) handleClick(legendItem, gd, numClicks);
}

plotly_legendclick clickVal

if(clickVal === false) return;

if(numClicks === 1) {
    legend._clickTimeout = setTimeout(function() {
        handleClick(legendItem, gd, numClicks);
    }, DBLCLICKDELAY);
}

preventDefault 或 stopPropagation handleClick false

Alex C Johnson answers the question here .

https://github.com/plotly/plotly.js/pull/2581 gd.on('plotly_legendclick',function() { return false; })