javascript - Pass a value to a specific parameter without caring about the position of the parameter -

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i wondering if possible pass value specific parameter example specifying name, not taking account if parameter first, second or 100th one.

for example, in python can like:

def myfunction(x, y):     pass  myfunction(y=3);

i need pass value specific parameter of don't know position in parameters enumeration. have searched around while, nothing seems work.

no, named parameters not exist in javascript.

there (sort of) workaround, complex method may take object in place of individual parameters

function dosomething(obj){    console.log(obj.x);    console.log(obj.y); }

could called with

dosomething({y:123})

which log undefined first (the x) followed 123 (the y).

you allow parameters optional too, , provide defaults if not supplied:

function dosomething(obj){    var localx = obj.x || "hello world";    var localy = obj.y || 999;    console.log(localx);    console.log(localy); }

TSQL