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TS

//html文件
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8" />
<title>TypeScript HTML App_for_test</title>
</head>
<body>
<h1>TypeScript HTML App_for_test</h1>
</body>
<script src="app.js"></script>
</html>

//app.js内容
class Greeter {
constructor(public greeting: string) {
}
greet() {
return "<h1>" + this.greeting + "</h1>";
}
};

var greeter = new Greeter("hello,world");
var str = greeter.greet();
document.body.innerHTML = str;

/***************************************************************/

class RayTracer {
private maxDepth = 5;
private intersections() {

}

private testRay() {

}

render() {
}
};
function defaultScene(): Scene {
return {
}
}
function exec() {
var canv = document.createElement("canvas");
canv.width = 256;
canv.height = 256;
document.body.appendChild(canv);
var ctx = canv.getContext("2d");
var rayTracer = new RayTracer();
return rayTracer.render( defaultScene() );
}
exec()

  //第一次使用typescript,为毛感觉和js差那么多啊,太不习惯了

interface

interface Person {
firstname: string;
lastname: string;
}

function greeter(person : Person) {
return "Hello, " + person.firstname + " " + person.lastname;
}

var user = {firstname: "Jane", lastname: "User"};

document.body.innerHTML = greeter(user);

  

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