Imperative Code

JavaScript
1

Can some help me to understand which one is the passed in (otherWindow) parameter.

Here is the code.

const Window = function(tabs) {
  this.tabs = tabs; 
};
Window.prototype.join = function(otherWindow) {
  this.tabs = this.tabs.concat(otherWindow.tabs);
  return this;
};
Window.prototype.tabOpen = function(tab) {
  this.tabs.push('new tab'); // Let's open a new tab for now
  return this;
};
Window.prototype.tabClose = function(index) {

  // Only change code below this line

  const tabsBeforeIndex = this.tabs.splice(0, index); // Get the tabs before the tab
  const tabsAfterIndex = this.tabs.splice(index + 1); // Get the tabs after the tab

  this.tabs = tabsBeforeIndex.concat(tabsAfterIndex); // Join them together

  // Only change code above this line

  return this;
 };
const workWindow = new Window(['GMail', 'Inbox', 'Work mail', 'Docs', 'freeCodeCamp']); // Your mailbox, drive, and other work sites

const socialWindow = new Window(['FB', 'Gitter', 'Reddit', 'Twitter', 'Medium']); // Social sites

const videoWindow = new Window(['Netflix', 'YouTube', 'Vimeo', 'Vine']); 
const finalTabs = socialWindow
  .tabOpen() // Open a new tab for cat memes
  .join(videoWindow.tabClose(2)) // Close third tab in video window, and join
  .join(workWindow.tabClose(1).tabOpen());
console.log(finalTabs.tabs);
2

here the function is created

and then it is used here twice
so in the first case otherWindow takes the value of videoWindow.tabClose(2). and in the other of workWindow.tabClose(1).tabOpen()

3

Thank you so much Ilenia! I got it now.

4

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