Welcome to JavaScript!

1.05 js内部引入,注释

< !DOCTYPE html >

< html lang="en" >

< head >

< meta charset="UTF-8" >

< title > Title < /title >

< !-- 1、js开发工具，HBuilder-- >

< !-- 2、js调试工具，edge-- >

< !-- js内部引入-- >

< script type="text/javascript" >

alert("我要自学");

< /script >

< /head >

< body >

< /body >

< /html >