anonymous function, Window object confirm, prompt

<script>    (function (ARG) {//anonymous function, No name         alert (ARG)     }) ('hello,jerry ' )</script>

<script>    //bom object, browser object model. Make JavaScript capable of ' talking ' to the browser '    window.alert (' hello ')//window is a global variable    var ret=window.confirm ("Did you Come")//pop-up window more out of the selection , have OK and cancel, have return value can be received    Console.log (ret)//can get true or False    var msg=window.prompt ("Please enter message content:")//Have a text box    Console.log (msg)//Can get input content </script>

anonymous function, Window object confirm, prompt