For a check box with the id “checkbox”, here is how to check if its checked:
$('#checkbox').is(':checked'); // Returns True if checked else False
Tag: HowTo
To check if a variable(a) has the value null, use the following code:
if (a === null) // Best way to do it!
if (a == null) // This does return true if a is null but it returns true also if a is undefined... so avoid it
To check if a variable(a) has the value undefined, use the following code:
if (typeof a === "undefined") // This works
if (a === undefined) // This works too
if (a == undefined) // This does return true if a is undefined but it returns true also if a is null... so avoid it
Facebook recently update added a new feature to its mobile app. The feature loads all links clicked on Facebook to open in the in-app browser as opposed to a browser installed on the phone. While this is faster, it seriously limits what you can do with the open page (for eg. sharing is limited). But fortunately this feature can be disabled.
To disable it, do the following:
- In the Facebook app, goto Menu > App Settings
- In General Settings, you will find the “Always open links with external browser” option. Tap it to Enable it.
- Now your facebook app should behave just the way it did before the update.
Screenshots:
If you are using Android ICS or above there is a simple way to keep track of your Mobile Data Usage.
- Go to Settings and select Data Usage.
- Drag the orange line and set it to approx 75% of your allowed Monthly data usage. When your usage crosses this limit a warning notification will be given to you.
- Drag the Red line and set it to approx 95% of your allowed Monthly data usage. When your usage crosses this limit your Mobile Data will automatically be disabled
- Set your data usage cycle based on when your bill cycle starts and ends.
Note: The Data usage of your phone may vary slightly from your carrier’s tracking(this is why we limit your usage to 95% of your quota)
The Nexus 5 is capable of taking live photos while recording a video. Here is how to do it:
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- Start recording a video using Google Camera
- While recording, simply tap the screen in the part showing the video to take a picture. A flash of white on screen will confirm that a picture was taken.
These pictures are limited by the resolution of video being recorded. If you are recording a Full HD video, the picture will be of the size 1920×1080 pixels
