typescript type argument code example
Example 1: typescript pass a function as an argunetn
class Foo {
save(callback: (n: number) => any) : void {
callback(42);
}
}
var foo = new Foo();
var strCallback = (result: string) : void => {
alert(result);
}
var numCallback = (result: number) : void => {
alert(result.toString());
}
foo.save(strCallback); // not OK
foo.save(numCallback); // OK
Example 2: how to make a generic variable in javascript
var x = 1;
var y = 1;
if (x == y) {
x = x + 1
}