Say i have an icon in a webpage and i would like to figure out what happens when i click that, how do i debug that with chrome debugger? Assuming that i have the non-minified code for the webpage.
i tried to do inspect element and attaching to event handlers which doesn help much.
<span id="__icon84" data-ui="__icon84" data-ui-icon-content="" class="UiIcon UiIconMirrorInRTL" style="font-family:'icons'"></span>
all i get is that the icon used is __icon84.
PS: i am new to JS.
Use the Event Listener Breakpoints sidebar pane in the Sources panel. Expand "Mouse" and check the "click" box. Then the debugger should break whenever you enter a "click" event handler.
Related
I am switching from debugging JS in Firefox to Chrome.
One thing that I am missing is this:
In Firefox I can see in the HTML see "[event]" that there is a custom event handler attached.
I think this preview is very handy.
In chrome I need to explicitly search for the event handler.
Is there a way to enable this feature (see event-handler in the tree) in chrome, too?
The feature you are looking for is available in google chrome dev tools
I have taken, the jobs links in stack overflow page itself, it has a click event handler, to see the event handler, select the Event Listeners tab in the right part(hilighted in Red) there is a possibility that it might be hiddent by >> , click to expand,
If the ancestor checkbox is checked please uncheck this, then you will get the clear view of for which event (e.g click) , on what element (e.g anchor tag), and on right side on which file with line number, click it to navigate there.
Hope this is what you are looking for.
it's available in chrome you can find it in developers option press
(CTRL+SHIFT+I) or F12
and then you will find tab named "Event Listener" in right hand upper corner if developer options is in full screen mode or else you'll find it it lower right corner.
And if you are unable to find that just simply find the >> symbol and click on it and select Event Listeners.
Here is the image for event listeners tab.
I think you can use getEventListners($0) api of chrome which gives the event listners of the particular selected element.
getEventListners($0) where $0 - The selected element in the DOM.
The console drawer can be added to the Elements tab by clicking on Esc key it will toggle the console drawer.Then in the console you can write getEventListners($0) as shown in the image.
As this is my first answer and don't have that much reputation as of now,it is not allowing me to directly add the image to the answer so I am really sorry for that. Please have a look at the image:
Inspecting google from my chrome browser.
my question is not about removing any event listeners.
i just want to remove/disable/hide that UI button that appears near any link to event listener function, which you can see in dev tools at Event Listeners tab, while hovering with a mouse. See a printscreen.
i am regularly used to click on the button instead of clicking on a link, and it completely erases the link i am willing to click.., it's embarrassing. Is there any way to disable this wonderful feature?
Have you thought about just making the window wider so they’re not as close?
I would like to interact with the page I am building with the console open. Unfortunately, if I trigger an event on my page the Dev Tools switches from "Console" to "Sources" and says "paused in debugger." It's driving me bananas. Is there a way to deactivate it?
How to deactivate breakpoints
Just press Ctrl + F8. Alternatively you can click the related button next to the buttons controlling the debugger.
This way the execution won't stop. It is especially useful when you try to inspect websites not under your control that left breakpoints (debugger command) in the source code, that might have been done intentionally to prevent you from doing said inspection.
You likely have a Breakpoint set on an Event. To remove it:
Open Debugger (F12)
Click on the Sources Tab
Click on the Event Listeners Breakpoints accordion dropdown (on the right)
Unselect (untick) each event that you do NOT want to break on.
Check your DOM, XHR and Event Listener breakpoints, and ensure they're unchecked/inactive.
To stop the debugger in Chrome, the circled icon should be deactivated (which will turn it grey colored):
Using Chrome , I need to debug the java-script handler that is executed when a specific button is clicked, without searching the java-script files.
Can I use Chrome's "inspect element" for the button to find java-script handler?
Or, is there a recommended tool?
How to achieve this?
p.s: Think of a complex app within a website, I need to debug the logic behind some buttons..
When you open the developer tools on the element tab if you select the element to debug you will see at your right a tab Event Listener. It is with the Styles tab. there you can inspect the event listener. In my opinion the best way is to add break points on the sources. You'll see.
I have various JS files included in an HTML page and am trying to debug when an event is being triggered. There is an issue in this app I'm helping out on where when the user presses the left or right arrows then the mousemove event is being triggered. In Chrome, I'm using the Developer Tools and am trying to find where this mousemove event is being triggered. In the Scripts tab of the Developer Tools, I have Event Listener breakpoints set for keyup and mousemove. When the page hits the breakpoints, both call stacks show jquery.js. How do I pinpoint and debug which element is triggering these events? I'd like to find a way to have the Developer Tools give me a line number of a file other than jquery.js.
Also, this issue only appears in Chrome for some reason.