How to invoke "click" event programmatically in d3?
Javascriptd3.jsJavascript Problem Overview
I'm trying like that (also at https://gist.github.com/1703994):
<!DOCTYPE html>
<html>
<head>
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<script type="text/javascript" src="http://mbostock.github.com/d3/d3.js?1.27.2"></script>
<script type="text/javascript" src="http://mbostock.github.com/d3/d3.time.js?1.27.2"></script>
<script type="text/javascript" src="js-libs/jquery-1.7.js"></script>
<style>
<!--
#test {
width: 400px;
height: 500px;
}
-->
</style>
</head>
<body>
<script type="text/javascript">
$(function() {
var w = 600,
h = 350;
var vis = d3.select("#test").append("svg:svg")
.attr("width", w)
.attr("height", h)
.append("svg:g")
.attr("transform", "translate(" + w / 2 + "," + h / 2 + ")");
var g = vis.selectAll("g")
.data([ { x:1 , y: 2} ])
.enter().append("svg:g");
g.append("svg:path")
.attr("fill", "red")
.attr("stroke", "red")
.attr("stroke-width", "10")
.attr("d", "M 100 350 l 150 -300")
g.select("path")
.on("click", function() { console.log("Hello"); });
// XXX: how to execute click programmaticaly?
})
</script>
<div id="test"></div>
</body>
</html>
But doesn't work
I think we may use https://github.com/mbostock/d3/wiki/Internals#wiki-dispatch_on
But how to do it?
Javascript Solutions
Solution 1 - Javascript
not sure why, but there appears to be a discrepancy with the way jQuery and d3 handle events that causes a jQuery induced click event $("#some-d3-element").click() to not dispatch to the d3 element.
a workaround:
jQuery.fn.d3Click = function () {
this.each(function (i, e) {
var evt = new MouseEvent("click");
e.dispatchEvent(evt);
});
};
and then call it:
$("#some-d3-element").d3Click();
Solution 2 - Javascript
Simply call the .on method as a getter for the registered value (i.e. your handler function), then call the result of that:
g.select("path").on("click")();
It gets a little more complicated if your handler uses the bound data and/or event fields, or if you've got multiple event listeners bound (e.g "click.thing1" and "click.thing2"). In that case, you're probably best off just firing a fake event using the standard DOM methods:
var e = document.createEvent('UIEvents');
e.initUIEvent('click', true, true, /* ... */);
g.select("path").node().dispatchEvent(e);
Solution 3 - Javascript
With D3 v4 you will likely want this:
d3.select('#some-id').dispatch('click');
Solution 4 - Javascript
This works. I'm using pie charts, so I'm selecting all the "selected" pie slices, and for each of them, retrieving the attached "click" callback (that I have attached in another portion of code not included here, using d3's .on() method) and then invoking with the expected parameters in the correct context.
d3.selectAll("g.selected").each(function(d, i) {
var onClickFunc = d3.select(this).on("click");
onClickFunc.apply(this, [d, i]);
});
Solution 5 - Javascript
This answer might be somewhat unrelated - but hopefully useful to someone searching for how to invoke a click event of a SVG element - since jQuery $(mySvgElement).trigger("click") won't work.
This is how you would programmatically trigger/invoke/raise a click event for a SVG element:
var ev = document.createEvent("SVGEvents");
ev.initEvent("click",true,true);
var target = $("svg>g>path[fill='#0011cc']").get(0); // get the SVG element here
target.dispatchEvent(ev); // like $(target).trigger('click') - but working!
Solution 6 - Javascript
I came this thread looking for a d3 mousemove event for angular unit testing.
@natevw answer
g.select("path").on("click")();
helped a lot on mouseover event. But, applying that to mousemove was giving an e.source null error.
The work around was to set the d3 event programmatically.
d3.event = document.createEvent('MouseEvent');
d3.event.initMouseEvent("mousemove");
d3.select(elm[0]).select("rect").on("mousemove")();
Hope this helps.
Solution 7 - Javascript
You can go super manual by getting the mouse event and passing it the arguments that d3 would otherwise provide for you. This gives you a fairly clean way to do it while still using d3 constructs. For a single element use the following:
var path = g.select('path');
path.on('click').call(path.node(), path.datum());
For multiple elements, you can trigger each one in turn:
g.selectAll('path').each(function(d, i) {
d3.select(this).on('click').apply(this, arguments);
});
The latter can also be used for a single element if your selector is specific enough, or if you use .select() instead of .selectAll() to only return the first element.
Solution 8 - Javascript
@handler answer did not work for me entirely. It would click the svg element but additional simulated events would not register. This is what worked for me:
function eventFire(el, etype){
if (el.fireEvent) {
el.fireEvent('on' + etype);
} else {
var evObj = document.createEvent('Events');
evObj.initEvent(etype, true, false);
el.dispatchEvent(evObj);
}
}
Usage:
eventFire(document.getElementById(element_id), 'click');
Solution 9 - Javascript
This is how I do it.
g.selectAll("path").on("click", function(d, i){
my_function(d, i);
});
I've found the the callbacks work with anonymous functions. So for the code above, any path that is clicked will call my_function and pass in the current datum d and index i of the path that was clicked.
Solution 10 - Javascript
I find next workaround:
d3.selectAll("path").each(function(d, i) {
onClickFunc.apply(this, [d, i]);
});
Where d is data and i is index this data
Solution 11 - Javascript
Try g.select("path").trigger("click")