refactor: Use pure JS equivalent of jQuery's $.ready()

https://stackoverflow.com/a/9899701

themes/typing/source/js/typing.js

@@ -23,44 +23,6 @@
     $('.fancybox').fancybox()
   }
 
-  // Add "Copy" button to code snippet
-  const code = document.getElementsByClassName('code')
-
-  for (let i = 0; i < code.length; i++) {
-    const button = document.createElement('button')
-    button.className = 'copy-button'
-    button.textContent = 'Copy'
-
-    code[i].appendChild(button)
-  }
-
-  $(document).ready(() => {
-    // Add copy to clipboard button for code snippet
-    const copyCode = new ClipboardJS('.copy-button', {
-      target: (trigger) => {
-        return trigger.previousElementSibling
-      }
-    })
-
-    copyCode.on('success', (event) => {
-      event.clearSelection()
-      event.trigger.textContent = 'Copied'
-      window.setTimeout(() => {
-        event.trigger.textContent = 'Copy'
-      }, 2000)
-    })
-
-    copyCode.on('error', (event) => {
-      event.trigger.textContent = 'Press "Ctrl + C" to copy'
-      window.setTimeout(() => {
-        event.trigger.textContent = 'Copy'
-      }, 2000)
-    })
-
-    // Initialize Cloudinary responsive function
-    const cl = cloudinary.Cloudinary.new({ cloud_name: 'curben' })
-    cl.responsive()
-  })
 })(jQuery)
 
 // Search button function
@@ -70,3 +32,48 @@ searchClick.onclick = function() {
   document.getElementById('searchTxt').value +
   '&group_id=&project_id=8306723&search_code=true&repository_ref=master')
 }
+
+// Add "Copy" button to code snippet
+const code = document.getElementsByClassName('code')
+
+for (let i = 0; i < code.length; i++) {
+  const button = document.createElement('button')
+  button.className = 'copy-button'
+  button.textContent = 'Copy'
+
+  code[i].appendChild(button)
+}
+
+/*
+* Copy button and Cloudinary functions.
+* Following functions only execute after
+* the 'document' is ready or
+* <script src> is executed.
+*/
+document.addEventListener('DOMContentLoaded', () => {
+  // Copy button
+  const copyCode = new ClipboardJS('.copy-button', {
+    target: (trigger) => {
+      return trigger.previousElementSibling
+    }
+  })
+
+  copyCode.on('success', (event) => {
+    event.clearSelection()
+    event.trigger.textContent = 'Copied'
+    window.setTimeout(() => {
+      event.trigger.textContent = 'Copy'
+    }, 2000)
+  })
+
+  copyCode.on('error', (event) => {
+    event.trigger.textContent = 'Press "Ctrl + C" to copy'
+    window.setTimeout(() => {
+      event.trigger.textContent = 'Copy'
+    }, 2000)
+  })
+
+  // Initialize Cloudinary responsive function
+  const cl = cloudinary.Cloudinary.new({ cloud_name: 'curben' })
+  cl.responsive()
+}, false);