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Thread: JavaScript:Tutorial, Using Arrays

  1. 12-03-2006 09:52 AM #1
    TcM
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    JavaScript:Tutorial, Using Arrays

    Introduction:-
    Usually this is a difficult thing when it comes to programming and usually people get mixed up with arrays.

    Solution:-
    Make this Function between the <head> tags:-

    Code:
    <SCRIPT language="JavaScript">

function array_use()
{

var msg= new Array(8)
msg[0]="Msg1";
msg[1]="Msg2";
msg[2]="Msg3";
msg[3]="Msg4";
msg[4]="Msg5";
msg[5]="Msg6";
msg[6]="Msg7";
msg[7]="Msg8";

var i=0;



for (i=0; i<8; i++)

  {
     alert(msg[i]);
  }

}

</SCRIPT>
    Instead of

    Code:
    var msg= new Array(8)
msg[0]="Msg1";
msg[1]="Msg2";
msg[2]="Msg3";
msg[3]="Msg4";
msg[4]="Msg5";
msg[5]="Msg6";
msg[6]="Msg7";
msg[7]="Msg8";
    You can make (Untested)

    Code:
    var msg = new Array("msg1","msg2","msg3","msg4","msg5","msg6","msg7","msg8");
    And call it with something like this:-
    Code:
    <BODY onLoad="array_use()">
    Explanation:-
    Code:
    for (i=0; i<8; i++)

  {
     alert(msg[i]);
  }
    This is a Loop that will display a msg and increase i by one every time and it will go on until i<8

    A Preview:-


    Conclusion:-
    As Always Feedback is welcome and the full source is attached!!
    Attached Files
    Last edited by TcM; 06-26-2008 at 01:30 PM.
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  2. 08-23-2007 09:03 AM #2
    RikkoSuperb
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    What else can you do with arrays? I have used them in coursework but the examples are lame - like amount of books borrowed from a library that are printed to the document for the user to view. wow. ground breaking stuff? methinks not.
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  3. 06-25-2008 01:34 AM #3
    Rohit
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    Re: JavaScript:Tutorial, Using Arrays

    Thanks to share this information,good information about how we can use array in <head> tag
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  4. 06-25-2008 03:02 AM #4
    TcM
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    Re: JavaScript:Tutorial, Using Arrays

    Welcome.

    Thanks for positive comment.
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  5. 06-25-2008 03:18 PM #5
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    Re: JavaScript:Tutorial, Using Arrays

    Your code isn't particularly efficient. A shorter way to declare an array like that:
    [HIGHLIGHT=javascript]
    var msg = new Array("msg1","msg2","msg3","msg4","msg5","msg6","m sg7","msg8");
    [/HIGHLIGHT]

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  6. 06-25-2008 04:22 PM #6
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    Re: JavaScript:Tutorial, Using Arrays

    These tutorials are not about efficiency, but about getting the basic thing and the concept of it into the readers mind.
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  7. 06-26-2008 11:08 AM #7
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    Re: JavaScript:Tutorial, Using Arrays

    I'm just saying, it's an awful lot of code there, which could easily be simplified.

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  8. 06-26-2008 12:33 PM #8
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    Re: JavaScript:Tutorial, Using Arrays

    Yeah, but makes it harder for someone trying to learn the concept of Arrays.
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  9. 06-26-2008 12:34 PM #9
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    Re: JavaScript:Tutorial, Using Arrays

    I can't see how it is harder - if anything it's easier, because you don't need to concern yourself with array indices - simply define the elements.

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  10. 06-26-2008 12:37 PM #10
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    Re: JavaScript:Tutorial, Using Arrays

    But as Arrays start with 0 and not with 1, if you don't make those indices, they might get confused. And they will not understand the concept of

    Code:
    alert(msg[i]);
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