javascript - How to calculate age based on one parameter function? -

i'm learning javascript , need write simple function display age, based on birth year. parameter can use year born , need call function. have far:

function myage(birthyear) {     var year = new date().getfullyear();     return year() - (birthyear); } myage(1984); 

i'm receiving error code not function, i'm not sure i'm doing wrong. thought call function @ end numerical year , calculate. or advice appreciated!

it seems have typo in function, instead of line,

return year() - (birthyear); 

write,

return (year - birthyear); 

here complete updated function,

function myage(birthyear) {     var year = new date().getfullyear();     return (year - birthyear); } console.log(myage(1984));