CODEWITHSUNDEEP
cssgoogle-chromegoogle-chrome-devtools
Abram
Abram

Reputation: 41954

Freeze screen in chrome debugger / DevTools panel for popover inspection?

I'm using the chrome inspector to try and analyze the z-index of a twitter bootstrap popover, and finding it extremely frustrating...

Is there a way to freeze the popover (while shown) so that I can assess and modify the associated CSS?

Placing a fixed 'hover' on the associated link does not cause the popover to appear.

Upvotes: 630

Views: 404573

Answers (15)

Nipun Raj
Nipun Raj

Reputation: 51

you can use the below script which lets to debug the popover when clicked.

document.addEventListener('click', ()=>{
    {debugger}
})

Upvotes: 5

Jecfish
Jecfish

Reputation: 4189

You can enable the Emulate a focused page setting in the Elements panel > Styles tab.

This setting is available the Style tab since the recent Chrome 123 updates.

The popover show/hide in Bootstrap is determine by the page's focus state (document.hasFocus()), not the element's hover state.

When you inspect the element with DevTools open, the focus is shifted to DevTools, which considered as a separate page. Therefore, we need to "fake" (emulate) the focus back to the page. There's a detailed explanation in this video.

emulate a focused page

Upvotes: 1

Phạm Huy Phát
Phạm Huy Phát

Reputation: 1116

Based on great idea of @frzsombor, I have written a chrome extension that help you freeze the DOM instantly for debugging and validating purpose. Under the hood, it call debugger command from chrome extension instead of waiting for the timeout in console to be triggered right at the moment / the state you want

https://chrome.google.com/webstore/detail/freeze-dom/onekmnelbichmlnmkecckkjjljifhefg

How to use it:

  • Open DevTools Panel
  • Right Click -> select 'Freeze DOM' or Press Cmd + Shift + Y (on Mac) / Cmd + Shift + Y (on Window, Ubuntu)

Upvotes: 3

user23461805
user23461805

Reputation: 51

Fn+F12-->3 dots in inspector right side-->more tools -->Rendering--> select Emulate a focused page

Upvotes: 5

JD Smith
JD Smith

Reputation: 1784

I found another way to do this.

If your element is shown by a click on a button then hides when focus is removed, just right-click and copy the button's selector, then go to the Elements panel in dev tools and hit Esc to open the console at the same time.

Then right-click again on the button and "inspect" to reveal that part of the HTML in the document.

Go back to your console and manually trigger the click event using: document.querySelector('#yourButtonSelector').click()

Then it goes into the desired state while your focus is on DevTools, and you can click around the Elements panel without causing it to disappear. Hope this helps!

Upvotes: 0

BingeCode
BingeCode

Reputation: 1699

You can use Bookmarklets to run a script to enter debugging mode (and thus freeze the viewport including all active states. It's the easiest method to inspect elements hidden behind a state if you ask me.

  1. Add a bookmark to your browser.
  2. Name it Freeze for example
  3. In the URL field, enter javascript: setTimeout(()=>{debugger}, 2000)
  4. Open Dev Tools (⌘ + Shift + C is my go to or F12)
  5. Click the Freeze bookmark
  6. Trigger the hover/active state in the view port as you normally would before 2s elapse
  7. Your view port is now frozen in the current state and you can inspect your previously hidden elements

Obviously you can change the interval until the debugger activates. Hope this helps!

Upvotes: 4

frzsombor
frzsombor

Reputation: 2560

UPDATE: As Brad Parks wrote in his comment there is a much better and easier solution with only one line of JS code:

run setTimeout(function(){debugger;},5000);, then go show your element and wait until it breaks into the Debugger

Original answer:

I just had the same problem, and I think I found an "universal" solution. (assuming the site uses jQuery)

  1. Go to elements tab in inspector
  2. Right click <body> and click "Edit as HTML"
  3. Add the following element after <body> then press Ctrl+Enter:
    <div id="debugFreeze" data-rand="0"></div>
  4. Right click this new element, and select "Break on..." -> "Attributes modifications"
  5. Now go to Console view and run the following command:
    setTimeout(function(){$("#debugFreeze").attr("data-rand",Math.random())},5000);
  6. Now go back to the browser window and you have 5 seconds to find your element and click/hover/focus/etc it, before the breakpoint will be hit and the browser will "freeze".
  7. Now you can inspect your clicked/hovered/focused/etc element in peace.

Of course you can modify the javascript and the timing, if you get the idea.

Upvotes: 146

Nandha
Nandha

Reputation: 335

I recently ran into this issue and pressing F8 solution didn't work for me. Here's how I froze the hover element.

  1. Right click the tag with the hover in Chrome and select it in Elements tab.
  2. On the right side window, select Event Listeners
  3. Expand the mouseout event
  4. click the remove button shown there.
  5. Now if you hover over your element, it will trigger mouseover event but cannot trigger mouseout when your curser leave the element, since we deleted that.

Hope this helps.enter image description here

Upvotes: 8

Vincent Gerris
Vincent Gerris

Reputation: 7537

None of the solutions worked for me, only the one as described on : https://developer.chrome.com/docs/devtools/javascript/disable/

for Linux ( for Mac use command instead of comtrol ):

  • Open developer tools ( ctrl + shift + I )
  • Run command window ( ctrl + shift + P )
  • Start typing javascript and select disable javascript

screenshot of instructions:

enter image description here

Upvotes: 2

M Ali Imtiaz
M Ali Imtiaz

Reputation: 159

Previously My Chrome Freeze feature was not working by pressing f8 shortcut Key , i use this walk around and goto Source Tab and just clicked on Pause / play on Script Execution button in right panel of chrome Dev tools in Source Tab, My short cut key that got fixed and started to work from then, Really thank full , Fixed my problem

Upvotes: 0

Vincent Tang
Vincent Tang

Reputation: 4170

I tried the other solutions here, they work but I'm lazy so this is my solution

  1. hover over the element to trigger expanded state
  2. ctrl+shift+c
  3. hover over element again
  4. right click
  5. navigate to the debugger

by right clicking it no longer registers mouse event since a context menu pops up, so you can move the mouse away safely

Upvotes: 6

Abram
Abram

Reputation: 41954

Got it working. Here was my procedure:

  1. Browse to the desired page
  2. Open the dev console - F12 on Windows/Linux or option + ⌘ + J on macOS
  3. Select the Sources tab in chrome inspector
  4. In the web browser window, hover over the desired element to initiate the popover
  5. Hit F8 on Windows/Linux (or fn + F8 on macOS) while the popover is showing. If you have clicked anywhere on the actual page F8 will do nothing. Your last click needs to be somewhere in the inspector, like the sources tab
  6. Go to the Elements tab in inspector
  7. Find your popover (it will be nested in the trigger element's HTML)
  8. Have fun modifying the CSS

Upvotes: 983

Brad Parks
Brad Parks

Reputation: 72271

To be able to inspect any element do the following. This should work even if it's hard to duplicate the hover state:

  • Run the following javascript in the console. This will break into the debugger in 5 seconds.

    setTimeout(function(){debugger;}, 5000)

  • Go show your element (by hovering or however) and wait until Chrome breaks into the Debugger.

  • Now click on the Elements tab in the Chrome Inspector, and you can look for your element there.
  • You may also be able to click on the Find Element icon (looks like a magnifying glass) and Chrome will let you go and inspect and find your element on the page by right clicking on it, then choosing Inspect Element

Note that this approach is a slight variation to this other great answer on this page.

Upvotes: 588

Leah Huyghe
Leah Huyghe

Reputation: 367

I found that this works really well in Chrome.

Right click on the element that you'd like to inspect, then click Force Element State > Hover. Screenshot attached.

Force element state

Upvotes: 24

Adrian Enriquez
Adrian Enriquez

Reputation: 8413

  1. Right click anywhere inside Elements Tab
  2. Choose Breakon... > subtree modifications
  3. Trigger the popup you want to see and it will freeze if it see changes in the DOM
  4. If you still don't see the popup, click Step over the next function(F10) button beside Resume(F8) in the upper top center of the chrome until you freeze the popup you want to see.

Upvotes: 65

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