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Tip of the Day
Language: JavaScript
Expertise: Beginner
Feb 3, 2009

Handle Null in JavaScript with the "||" Operator

The "||" Operator can be used to handle nulls in variables or to handle an undefined variable itself. This operator, along with coalescing, can also be used to set default values to variables.

Instead of using the ternary operator to handle a null value and set the default values, you can use the "||" operator.

Using the ternary operator:


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var employeeName = (employee.Name != null ? employee.Name : "Unknown"); 
Using the "||" Operator:

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var employeeName = employee.Name || "Unknown"; 
Srinath MS
 
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