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:
The maximize button (top left – 3rd button to the right on the window) hides the top bar and dock automatically in OsX. If you want to make a window cover the whole screen without covering the dock and top bar, use the following key combinations:
Option + (click on green button on top left) – This maximizes the window vertically, useful for some apps that dont require as much horizontal space
Shift + Option + (click on green button on top left) – This maximizes the window to cover both horizontal and vertical space
{adinserter 3}
Facebook’s video auto-play settings can be turned on or off. This will help you save bandwidth and help remove the distraction of an autoplaying video. To stop videos from playing automatically do the following:
option and select Settings
JQuery Check if Element Exists using this simple piece of code. To check this in the current page, we need to check the length of the element returned by the JQuery selector, if it returns you something then the element must exists otherwise no.
if( $('#EleSelector').length ) { // use this if you are using id, replace EleSelector with the id
// it exists
}
if( $(‘.EleSelector’).length ) { // use this if you are using class, replace EleSelector with the id
// it exists
}
In case of plain javascript try this:
//you can use it for more advanced selectors
if(document.querySelectorAll("#EleSelector").length){}
if(document.querySelector("#EleSelector")){}
//you can use it if your selector has only an Id attribute
if(document.getElementById("EleSelector")){}