Sometimes declaring a variable (or more) as function parameters can save some strokes by avoiding the var keyword. This use case is fairly rare though:

function f(){var i} => function f(i){}

Also you can use short circuit operators to avoid if statements:

if(a)b => a&&b

if(!a)b => a||b

Sometimes declaring a variable (or more) as function parameters can save some strokes by avoiding the var keyword. This use case is fairly rare though:

function f(){var i} => function f(i){}

Also you can use short circuit operators to avoid if statements:

if(a)b => a&&b

if(!a)b => a||b

To coerce to a number: str-0