'Clean up' jGrasp by clicking on File and pulling down to Close All. Only Chrome and Safari let you do mouse selection of elements while in debugger mode though, so in Edge or Firefox, you might have to do the drilling through the Elements tab to find what you need manually. Starting jGrasp: Most integrated development environments (IDEs) include a debugger. I tried this, and it works, in Chrome, Firefox, Edge, and Safari, so it’s a pretty cross-browser DevTools friendly trick. setTimeout(function(), 3000) Give yourself a few seconds to get the DOM how you need it, then the debugger will fire and you can inspect as needed. Or (Tim Holman taught me the trick) you can trigger it with a setTimeout() right from the console.
Jgrasp debugger wont pause very long code#
You can put that debugger statement right in your code where you need it (remember DevTools has to be open for it to work). This is your opportunity to select that otherwise-impossible thing to select and do what you need to do. No more events are fired and script excecution is completely paused. The trick is to fire a debugger right when you need itĪ debugger statement, when the DevTools are open, kinda freezes the DOM. This is very useful, but won’t help us here. It doesn’t fire the DOM event, it just simulates the CSS state. Try as I might, I just can’t target that newly-added element for inspection.Ĭhrome DevTools can simulate a :hover style, but that doesn’t really help us here. Then you can examine the values of the local variables i and number. If your application seems to be unresponsive, you can pause the program to analyze where your code is stuck. Now you can debug the program by clicking on the debug icon instead of the run icon (it is to the right of the run icon and looks like a ladybug). Say I inserted an element on the mouseenter event of a certain other element, then removed it on mouseleave. Pause, resume, restart, or stop the debugger. The DOM events needed to work with the DevTools themselves can interfere. Right click on something and “Inspect Element”, or, open DevTools and use its selection tools to grab what you need.īut… sometimes it can be difficult or impossible to target the element you need to target in the DevTools.
If you need to see (and play with) the styles on any given element, a quick inspection is only a few clicks away.
Jgrasp debugger wont pause very long full#
If you have the full JDK installed, you may need to change your PATH to correct this. I understand that Duktape isn't thread safe in general, but this is a particular case where it would be useful, when debugging, to be able to safely trigger a debugger pause from a separate mon. The DevTools (in any browser) are an invaluable development tool for CSS developers. November 4th, 2007, 05:52 PM Secondly, when I try to debug I get this error message and debugging doesn't work: It appears you are running jgrasp under the JRE (not JDK), or a version of Java that does not support integrated debugging.
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