Categories
JavaScript Open Source Solutions Web

Convert JavaScript Date format YYYYMMDD

Here is a simple function that takes the input of JS Date and returns a string of format YYYYMMDD:

var getDateFromDateTime = function(date) {
date = new Date(date); //Using this we can convert any date format to JS Date
var mm = date.getMonth() + 1; // getMonth() is zero-based
var dd = date.getDate();
if(mm<10){ mm="0"+mm; } if(dd<10){ dd="0"+dd; } return [date.getFullYear(), mm, dd].join(''); // padding };

Categories
Android Apps Device Open Source Solutions

How to Disable Back Button Press in Android

You need to override the “onBackPressed” method to avoid the default action. You can leave the function empty if you dont want any action to be taken on press of the Back Button.

The Code:

@Override
public void onBackPressed() {
}

Note: this requires API Level 5 or higher.

Categories
Open Source Solutions

Git – Undo Uncommitted Changes to a Specific File

Here are the steps remove uncommited changes to a file in Git:

  • Firstly check the list of uncommited changes in your system by using the command “git status
  • To remove the changes to the file use the command: git checkout <filepath>  Make sure you use the full path as seen in the git status output
  • Execute “git status” again to make sure that the file is now clean again.
Categories
JavaScript Open Source Web

AngularJS – Round off Number to Fixed Length of Fractions

Angular’s built in number filter allows one to specify the number of decimals that should be displayed.

The syntax is as follows:
{{val | number:<count>}}

Where val is the value to be displayed, number is the filtername and count is the number of decimals to be displayed.

For eg.:

If val is 1234.56789

{{val | number:2}}

Displays: 1234.56

{{val | number:0}}

Displays: 1235

{{val | number:4}}

Displays: 1234.5679

Categories
MongoDB Open Source Solutions Web

Creating users in MongoDB


Creating users in MongoDB is as simple as running the following commands:

use db_name;
db.createUser({
user: "user_name",
pwd: "password",
roles: [ "readWrite", "dbAdmin" ]
})

Here:

  • db_name : Database Name
  • user_name: Username of the user
  • password: Password of the user
  • roles: Roles of the user – Is an array and can be empty
    • Eg. readWrite, dbAdmin, clusterAdmin, readAnyDatabase