TypeScript学习笔记1：安装

一、通过npm安装typescript比较简单

npm install -g typescript

二、创建第一个TypeScript文件:demo.ts

function greeter(person) {
    return "Hello, " + person;
}

var user = "Jane User";

document.body.innerHTML = greeter(user);

编译代码

tsc greeter.ts

生成javascript:demo.js

function greeter(person: string) {
    return "Hello, " + person;
}

var user = "Jane User";

document.body.innerHTML = greeter(user);

三、运行TypeScript web应用程序查看效果

<!DOCTYPE html>
<html>
    <head><title>TypeScript Greeter</title></head>
    <body>
        <script src="demo.js"></script>
    </body>
</html>

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