Arrays 1

[wuzzle]

Can someone tell me what this code is doing, from the "for" statement down.

birthdayarray = new Array(12);
birthdayarray[0] = "January";
birthdayarray[1] = "January";
birthdayarray[2] = "February";
birthdayarray[3] = "March";
birthdayarray[4] = "April";
birthdayarray[5] = "May";
birthdayarray[6] = "June";
birthdayarray[7] = "July";
birthdayarray[8] = "August";
birthdayarray[9] = "September";
birthdayarray[10] = "October";
birthdayarray[11] = "November";
birthdayarray[12] = "December";

var searchstring = prompt("What number of month were you born in?",""

for (m=0; m<birthdayarray.length; m++){
alert(m);
if (birthdayarray[m].search(searchstring) != -1){
alert(&quot;You were born in &quot;+birthdayarray[m]+&quot;, which is month &quot;+m+&quot; out of 12.&quot
}
}

 

[GIGN]

It gets the entered text at the prompt and then goes thru the array of birthdays.

At every iteration the array entry is comparing itself to the searchstring - and if this does not match then -1 is returned.

so if the string i the array[m] entry is the same as the onegiven as 'searchstring' - the alert message is given.

So the search is just a pattern matching device.
b² - benbiddington@surf4nix.com

 

[wuzzle]

Thank you so much, that makes it alot easier to understand. Now how would I make it so that after they enter their number, the alert box comes up and tells them what month it corresponds to, without having to count to 12?

 

[GIGN]

replace the alert at the end with:


alert(&quot;You were born in &quot;+ birthdayarray[m]);


This is what was displayed though - but with that other stuff was it not? It should ahve already given the month because that's what birthdayarry[m] holds.

Also get rid of the first alert(m) - if you haven't already.
maybe that's what you were meaning? In actual fact yes I think that is what you meant, you just don't want the counter!
b² - benbiddington@surf4nix.com

 

[wuzzle]

That's what I meant - I just had to get rid of alert(m). It works perfectly now! Thanks