javascript - How to invoke "click" event programmatically in d3?

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javascript - How to invoke "click" event programmatically in d3?

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

javascript - How to invoke "click" event programmatically in d3?

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>

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1 Answer

深蓝 · Answer 1 · 2021-10-16T22:31:07+0000

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();

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javascript - How to invoke "click" event programmatically in d3?

javascript - How to invoke "click" event programmatically in d3?

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