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<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="utf-8">
  <title>Lodash _.bindAll - click handler</title>
</head>
<body>
  <h1>_.bindAll - event handler</h1>
  <button id="save-btn" type="button">Save</button>
  <pre id="out"></pre>
  <script src="https://cdn.jsdelivr.net/npm/lodash@4.17.21/lodash.min.js"></script>
  <script>
    (function () {
      var widget = {
        label: "Save",
        clicks: 0,
        init: function () {
          document
            .getElementById("save-btn")
            .addEventListener("click", this.handleClick);
        },
        handleClick: function () {
          this.clicks += 1;
          document.getElementById("out").textContent =
            this.label + " clicked " + this.clicks + " time(s)";
        }
      };
      _.bindAll(widget, "handleClick", "init");
      widget.init();
    })();
  </script>
</body>
</html>

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Lodash _.bindAll - click handler (Try It)