[英]Unable to use this.set() for 'hoveredLabel' in D3 Bar Chart
In my Ember appliation I have a D3 Stacked Bar Chart and I am trying to set a 'hoveredLabel' value for use in my tooltip code. 在我的Ember应用程序中,我有一个D3堆积条形图,并且我试图设置一个“ hoveredLabel”值以在我的工具提示代码中使用。 The hover code is here:
悬停代码在这里:
.on('mouseover', d => {
this.set('hoveredLabel', d.data.label);
this.set('hoveredCount', d.data.count1);
console.log(d.data.label)
console.log(hoveredLabel)
})
.on('mouseout', () => {
this.set('hoveredLabel', null);
this.set('hoveredCount', null);
})
The console log for 'd.data.label' prints the correct label to the console when I hover over the bar. 当我将鼠标悬停在栏上时,“ d.data.label”的控制台日志会在控制台上打印正确的标签。 The 'hoveredLabel' console log returns an undefined error.
“ hoveredLabel”控制台日志返回未定义的错误。 I am using this code in another component and I get the desired result so I'm a bit stuck.
我在另一个组件中使用此代码,但得到了预期的结果,所以有点卡住了。
Full method chain: 完整的方法链:
svg.append("g")
.selectAll("g")
.data(series)
.enter().append("g")
.attr("fill", function(d) { return z(d.key); })
.selectAll("rect")
.data(function(d) { return d; })
.enter().append("rect")
.attr("width", x.bandwidth)
.attr("x", function(d) { return x(d.data.label); })
.attr("y", function(d) { return y(d[1]); })
.attr("height", function(d) { return y(d[0]) - y(d[1]); })
.on('start', (data, index) => {
if (index === 0) {
(function updateTether() {
Tether.position()
rafId = requestAnimationFrame(updateTether);
})();
}
})
.on('end interrupt', (data, index) => {
if (index === 0) {
cancelAnimationFrame(rafId);
}
})
.attr('opacity', d => {
let selected = this.get('selectedLabel');
return (selected && d.data.label !== selected) ? '0.5' : '1.0';
})
.on('mouseover', d => {
this.set('hoveredLabel', d.data.label);
this.set('hoveredCount', d.data.count1);
console.log(d.data.label)
console.log(hoveredLabel)
})
.on('mouseout', () => {
this.set('hoveredLabel', null);
this.set('hoveredCount', null);
})
.on('click', d => {
let clickedLabel = d.data.label;
let clickedCount = d.data.count1;
// console.log(clickedLabel, clickedCount)
if (this.get('on-click')) {
this.get('on-click')(clickedLabel);
} else {
if (clickedLabel === this.get('selectedLabel')) {
this.set('selectedLabel', '');
this.set('selectedCount', '');
} else {
this.set('selectedLabel', clickedLabel);
this.set('selectedCount', clickedCount);
}
this.buildChart()
}
});
If you are setting a property 'hoveredLabel' for a ember component , You should get them with 'get'. 如果要为余烬组件设置属性“ hoveredLabel”,则应使用“ get”获取它们。 I assume that 'this' is your ember component ?
我假设“这”是您的余烬组件?
Try 尝试
this.get('hoveredLabel')
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