Wu Yuxiong - natural born JAVASCRIPT development of learning: pop

<! DOCTYPE HTML > 
< HTML > 
< head > 
< Meta charset = "UTF-. 8" > 
< Script > 
function myFunction () { 
    Alert ( " Hello, I am a warning box! " ); 
} 
</ Script > 
< / head > 
< body > 

< INPUT type = "Button" the onclick = "myFunction ()" value = "alert box displays"  /> 

</ body > 
</html>

<! DOCTYPE HTML > 
< HTML > 
< head > 
< Meta charset = "UTF-. 8" > 
< title > novice tutorial (runoob.com) </ title > 
</ head > 
< body > 

< P > click on the button to display the confirmation frame. </ The p- > 
< the Button onclick = "myFunction ()" > point I </ the Button > 
< the p- the above mentioned id = "Demo" > <
> 
Function myFunction () {
     var X;
     var R & lt = Confirm ( " press the button! " );
     IF (R & lt == to true ) { 
        X = " you press the \" OK \ "! " ; 
    } 
    The else { 
        X = " you press the \" cancel \ "button! " ; 
    } 
    document.getElementById ( " Demo " ) .innerHTML = X; 
} 
</ Script > 

</ body >
</html>

<! DOCTYPE HTML > 
< HTML > 
< head > 
< Meta charset = "UTF-8" > 
< title > newbie tutorial (runoob.com) </ title > 
</ head > 
< body > 

< the p- > Click the button to see input dialog box. </ The p- > 
< the Button onclick = "myFunction ()" > point I </ the Button > 
< the p- the above mentioned id = "Demo" > <
> 
Function myFunction () {
     var the X-;
     var the Person = prompt ( " Please enter your name " , " Harry Potter " );
     IF (the Person ! = Null  && the Person ! = "" ) { 
        The X- = " Hello "  + the Person +  " ! how are you feeling today? " ; 
        document.getElementById ( " Demo " ) .innerHTML = the X-; 
    } 
} 
</script>

</body>
</html>

<! DOCTYPE HTML > 
< HTML > 
< head > 
< Meta charset = "UTF-. 8" > 
< title > novice tutorial (runoob.com) </ title > 
</ head > 
< body > 

< P > click button pop The total newline. </ The p- > 
< the Button onclick = "myFunction ()" > point I </ the Button > 
< the p- the above mentioned id = "Demo" > <
>
function myFunction(){
    alert("Hello\nHow are you?");
}
</script>

</body>
</html>