Optional function arguments for JavaScript
In Ruby, there's this:
def foo(bar, options={})
...
endOr even:
def foo(bar, baz=1)
...
endIn JavaScript, there's...uh...something less memorable. That's why I'm storing this snippet here.
foo = required parameter
baz = optional parameter
function foo(bar, baz){
baz = (typeof baz === "undefined") ? "defaultValue" : baz;
...
}Written by Melanie Archer
Related protips
1 Response
Using an object as argument allows more arbitrary/optional combinations/order of arguments.
But it requires more documentation (which is good!)
function foo(params){
params = params || {};
params.bar = params.bar || "something";
params.baz = params.baz || "defaultValue";
}
over 1 year ago
·
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