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Detect Network Status : Check if User is Online
Detect Network Status : Check if User is Online
We can detect the network status of user in Javascript, this small piece of code will help to determine if user is online or offline. We are going to user Navigator.Online api, This api returns the online status of the browser. The property returns a boolean value, with true meaning online and false meaning offline. The property sends updates whenever the browser's ability to connect to the network changes.
Check if User is Online
To check if you are online, query window.navigator.onLine, as in the following example:
if (navigator.onLine) {
console.log('online');
} else {
console.log('offline');
}
If the browser doesn't support navigator.onLine the above example will always come out as false/undefined.
Listening for changes in network status
To see changes in the network state, use addEventListener to listen for the events on window.online and window.offline, as in the following example:
window.addEventListener('offline', (e) => { console.log('offline'); });
window.addEventListener('online', (e) => { console.log('online'); });
If you want to check in depth about Navigator.Online please visit this official page of MDN Web Docs
How to create a folder in Docker
To create a folder in docker or a file create a directory for the build context and cd into it. You can use the classic mkdir command to create a folder in Docker.
Create Directory if not Exists in DockerFile
To create a Directory that does not exist you have to use the --p command along with the mkdir command. Becausemkdir isn't recursive by default -- it expects the immediate parent directory to exist.
Dockerfile mkdir permission denied
Docker Filesystems and Docker containers work in a similar manner to filesystems outside a Docker container. To provide users read/write/execute permissions use this command chmod 0777 /usr/local/docker/foo
Async Await in Do While Loop
In this post, we are going to checkout Async Await in Do while loop with examples. Do while Loop in Typescript is same as the Do While Loop in Javascript.
Create Canvas Dynamically in Angular
We can use Renderer API to create canvas dynamically in Angular which can be imported from angular/core package. Renderer API allows DOM maniplulation.
Indian Currency Pipe in Angular
Indian currency pipe in Angular, Currency pipe angular without symbol, Angular Currency Pipe is one of the built in pipe in Angular used to format currency value according to given country code,currency,decimal,locale information.
Adding a script to an Angular Library
Adding External Scripts in Angular Library or application. You can add external scripts in angular application on runtime using javascript with few lines of code.
Repository is not clean. Please commit or stash any changes before updating
Repository is not clean. Please commit or stash any changes before updating. If you are getting such kind of Error use the --force flag along with the ng update command
Docker mkdir permission denied Mac
Docker mkdir permission Failed ? For using data volumes in Docker by command-line and If your Docker host is on the Linux platform, you can find Docker volumes by /var/lib/docker/volumes path.
Uninstall angular cli using yarn
To uninstall any package using yarn you have to use the "remove" keyword along with the package name. You can also add in "global" keyword to uninstall the package globally using yarn from your system.
