Here is another quick tip on JavaScript, the default value in Javascript. If you are coming from the C# world you may have seen something along the line of
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string str = person.FirstName ?? "Unknown"; |
The above code shows the ?? for null coalescing operator in C#, don’t confused it by the generic default
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var str = person.firstName || "Unknown"; function add(x, y) { x = x || 0; y = y || 0; return x + y; } alert(add(1)); alert(add('', 1)); alert(add(undefined, 1)); |
In the above code we have create a function call add and we have defined default values inside of the function. Learn it, love it, use it 🙂 It comes in handy to define default values.
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