What does 0; means in javascript -


looking @ grunt-strip plugin remove console.logs. realized replaces console.log statements 0;. 0; have effect?

it doesn't have effect, no. js evaluates 0 , nothing picks result. idea removing console.* (with simple replace nothing) might break code this:

if(condition)     console.log('');  functioncall();

would become (with reformatting emphasis...)

if(condition)     functioncall();

so it's replaced dummy statement.

if(condition)     0; // nothing  functioncall();

also, code checking if console present return false because 0 falsy.

if(console) { // not executed when replaced if(0)     // debugging action }

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