Tuesday, October 30, 2018

How to debug a web page on iOS - Part 2

In this post we will continue our pursuit to debug a web page on iOS. Wont it be nice, if we had Chrome Developer Tools kind of interface even for the iOS?

The second way to investigate webpage errors on iOS is going to achieve exactly that, but using Safari!

The Solution

Apple natively supports remote debugging of webpages on  iOS since iOS6. Here are the steps that are necessary to enabled it.
  • Open Settings app on iOS device
  • Click on Safari

  • Here, click on Advanced

  • Next, enable the Web Inspector switch.
  • Now, head over to your Mac and open Safari.
  • Click on Safari --> Preferences

  • Click on Advanced tab and enable Show Develop menu in menu bar 

  • This will Show a new menu item called Develop right next to the Window menu item.
  • Now, Connect your iOS device with the Mac using a cable.
  • Next, Open the Safari browser on the iOS device and open the webpage that you want to investigate.
  • Click on Develop and you should see your iOS device listed there.
  • Clicking on your iOS device name under the Develop menu, should show up all the web pages opened on the iOS safari browser.

  • Click on the webpage that you want to debug, this opens up the Safari Web Inspector 
  • Here, you can select elements, manipulate CSS, investigate console errors, look at all the network calls, profile your app and more. 
  • Notice when we inspect a div in the Web Inspector, it automatically gets highlighted on the iOS device



    Nice isn't it?

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    Have some Fun!