[ES6] 16. Object Enhancements
2024-08-22 23:36:00
Define object:
var color = "blue";
var speed = 120; var car = {color, speed}; console.log(car.color); // blue
console.log(car.speed); // 120
in ES5:
var car = {color: color, speed: speed};
works with function:
var color = "blue";
var speed = 120;
function go(){
console.log("start");
} var car = {color, speed, go}; console.log(car.color); //blue
console.log(car.speed); //
car.go(); // start
define function inside object:
var color = "blue";
var speed = 120; var car = {
color,
speed,
go(){
console.log("start");
}
}; console.log(car.color); //blue
console.log(car.speed); //
car.go(); // start
in ES5:
var car = {
color,
speed,
go: function(){
console.log("start");
}
};
get computed property:
var color = "blue";
var speed = 120; var car = {
color,
speed,
["go"]: function(){
console.log("start");
}
}; console.log(car.color); //blue
console.log(car.speed); //
car.go(); // start
The same as:
car["go"](); // start
string concatenation or evaluation:
var color = "blue";
var speed = 120;
var drive = "go";
var car = {
color,
speed,
[drive]: function(){
console.log("start");
}
}; console.log(car.color); //blue
console.log(car.speed); //
car.go(); // start
car["go"](); // start
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