Java Qui Nhon

How to access class variable inside Promise then() function?

https://stackoverflow.com/questions/48064389/how-to-access-class-variable-inside-promise-then-function

If you pass a function reference, this won't point to the local class instance anymore.

You can use bind

.then(this.extractData.bind(this))

or arrow functions

.then((res) => this.extractData(res))

to get the desired behavior.

'wmic' is not recognized as an internal or external command, operable program or batch file

https://superuser.com/questions/1178674/wmic-is-not-recognized-as-an-internal-or-external-command-operable-program-or

This indicates that the wmic utility's directory is not found on your PATH. Open the advanced System Properties window (you can open the System page with Windows+Pause/Break) and on the Advanced tab, click Environment Variables. In the section for system variables, find PATH (or any capitalization thereof). Add this entry to it:

%SystemRoot%\System32\Wbem

Note that entries are delimited by semicolons.

How to completely remove node.js from Windows

https://stackoverflow.com/questions/20711240/how-to-completely-remove-node-js-from-windows

How to remove Node.js from Windows:

Take a deep breath.
Run npm cache clean --force
Uninstall from Programs & Features with the uninstaller.
Reboot (or you probably can get away with killing all node-related processes from Task Manager).
Look for these folders and remove them (and their contents) if any still exist. Depending on the version you installed, UAC settings, and CPU architecture, these may or may not exist:
- C:\Program Files (x86)\Nodejs
- C:\Program Files\Nodejs
- C:\Users\{User}\AppData\Roaming\npm (or %appdata%\npm)
- C:\Users\{User}\AppData\Roaming\npm-cache (or %appdata%\npm-cache)
- C:\Users\{User}\.npmrc (and possibly check for that without the . prefix too)
- C:\Users\{User}\AppData\Local\Temp\npm-*
Check your %PATH% environment variable to ensure no references to Nodejs or npm exist.
If it's still not uninstalled, type where node at the command prompt and you'll see where it resides -- delete that (and probably the parent directory) too.
Reboot, for good measure.

How to delete remote branches in Git

https://www.educative.io/edpresso/how-to-delete-remote-branches-in-git

While working with Git, it is possible that you come across a situation where you want to delete a remote branch. But before jumping into the intricacies of deleting a remote branch, let’s revisit how you would go about deleting a branch in the local repository with Git.

Deleting local branches

First, we print out all the branches (local as well as remote), using the git branch command with -a (all) flag.
To delete the local branch, just run the git branch command again, this time with the -d (delete) flag, followed by the name of the branch you want to delete (test branch in this case).

Note: Comments are the output produced as a result of running these git commands

Note: You can also use the -D flag which is synonymous with --delete --force instead of -d. This will delete the branch regardless of its merge status.

Deleting remote branches

To delete a remote branch, you can’t use the git branch command. Instead, use the git push command with --delete flag, followed by the name of the branch you want to delete. You also need to specify the remote name (origin in this case) after git push.

How to put scroll bar only for modal-body?

https://stackoverflow.com/questions/25874001/how-to-put-scroll-bar-only-for-modal-body

If you're only supporting IE 9 or higher, you can use this CSS that will smoothly scale to the size of the window. You may need to tweak the "200px" though, depending on the height of your header or footer.

.modal-body{
    max-height: calc(100vh - 200px);
    overflow-y: auto;
}

Left & right align modal footer buttons in Bootstrap 4

https://stackoverflow.com/questions/43042262/left-right-align-modal-footer-buttons-in-bootstrap-4

Now that the modal-footer is "display:flex" in Bootstrap 4, it would be easiest to use the auto-margins. Use mr-auto on the left button.

<div class="modal-footer">
     <button type="button" class="btn btn-primary mr-auto">Save changes</button>
     <button type="button" class="btn btn-secondary" data-dismiss="modal">Close</button>
</div>

Demo

Also see: Left align and right align within div in Bootstrap

Follow-up to comment "What if I need the button on the right to occupy all the space left?" - Use the btn-block class:

<div class="modal-footer">
     <button type="button" class="btn btn-primary text-nowrap">Save changes</button>
     <button type="button" class="btn btn-secondary btn-block ml-1" data-dismiss="modal">Close</button>
</div>