I have attached a click event to an element of a D3 chart:
import * as d3 from 'd3';
const vis = {}
vis.svg = d3.select(element)
.append("svg")
.attr("width", 500)
.attr("height", 500)
vis.g = vis.svg
.append("g")
const circles = [20];
const myCircles = vis.g.selectAll('circle').data(circles).enter()
myCircles
.append('circle')
.attr('id', (d, i) => { return 'myCircle' + i})
.attr('cx', 100)
.attr('cy', 100)
.attr('r', (d, i) => d)
.attr('fill', 'gainsboro')
.attr('stroke', 'grey')
.on('click', function(event, d) {
d3.select(this).attr('stroke', 'black')
d3.select(this).attr('stroke-width', '2px')
})
Is there a way to fire this click event from outside of an element? I tried doing this:
d3.select("#myCircle0").click();
But it does not work. Is there an alternative way of firing D3 event for a specific element?
You have to dispatch the event:
d3.select("#myCircle0").dispatch("click");
Here is a demo with a slightly modified code, dispatching the click to the first circle:
const vis = {}
vis.svg = d3.select("body")
.append("svg")
.attr("width", 500)
.attr("height", 500)
vis.g = vis.svg
.append("g")
const circles = [20, 20, 20];
const myCircles = vis.g.selectAll('circle').data(circles).enter()
myCircles
.append('circle')
.attr('id', (d, i) => {
return 'myCircle' + i
})
.attr('cx', (_, i) => 100 + 50 * i)
.attr('cy', 100)
.attr('r', (d, i) => d)
.attr('fill', 'gainsboro')
.attr('stroke', 'grey')
.on('click', function(event, d) {
d3.select(this).attr('stroke', 'black')
d3.select(this).attr('stroke-width', '2px')
});
d3.select("#myCircle0").dispatch("click");<script src="https://d3js.org/d3.v7.min.js"></script>