Templating
Basically you can use the same syntax as groovy string interpolation.
// Multiline strings
`This is a legal
string in ES 6.`
// String interpolation
var name = "Bob", time = "today";
`Hello ${name}, how are you ${time}?`
Variable Arguments
Vanilla JS arguments array
function foo() {
console.log(arguments);
}
foo(1, 2, 3); // [1, 2, 3]
ES6 Rest Parameters
function foo(a, b, ...theArgs) {
// ...
}
- rest parameters are only the ones that haven't been given a separate name, while the arguments object contains all arguments passed to the function;
- the arguments object is not a real array, while rest parameters are Array instances, meaning methods like sort, map, forEach
pop can be applied on it directly;
ES6 Default Parameters
function foo(x=12) {
console.log(x);
}
foo(); // 12
foo(1); // 1
