JavaScript:Tutorial, Break Out Of Loops

Introduction:-
To understand this tutorial make sure that before you see this tutorial JavaScript :Tutorial, Loops and JavaScript :Tutorial, Your First Game! here we will elaborate a little more on these!

Explanation:-
In this tutorial the Explanation goes before the code too.


while (something)

{

do something else

if (something(while looping))

{

end the loop

}

I hope this explained the basic concept on how to break out of loops

Solution:-
Now here are some practical codes! Here


<SCRIPT LANGUAGE="JavaScript">

var usrno = 0;

while (usrno!=50)

{

usrno = window.prompt('Guess the number, enter end to finish',0);

if (usrno=='end')

{

alert('Game Ended');

break;

}

if (usrno<50)

{

alert('too low');

}

if (usrno>50)

{

alert('too high');

}

}

</SCRIPT>

Explanation Of Code:-


usrno = window.prompt('Guess the number, enter end to finish',0);

if (usrno=='end')

{

alert('Game Ended');

break;

}

This is the most important code. Here we are promoting the user ( see this tutorial JavaScript :Tutorial, Prompt ) and asking him to enter a number but if he instead writes 'end' without the ' ' the game will display an alert and we will break out of the loop, because of the 'break;' command!!

A Preview:-
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