Javascript Array Alert

Question

Im new to Javascript   Im trying to code these four buttons  I m currently on the second one  I ve coded an array  But when I click on the button  it replaces the page  I want to display the array in an alert box    lt html gt   lt head gt   lt script type  text javascript  gt   function SayHello         alert  Hello World        function DumpCustomers          var aCustomers new Array        aCustomers 0   Frank Sinatra        aCustomers 1   Bob Villa        aCustomers 2   Kurt Cobain        aCustomers 3   Tom Cruise        aCustomers 4   Tim Robbins        aCustomers 5   Santa Claus        aCustomers 6   Easter Bunny        aCustomers 7   Clark Kent        aCustomers 8   Marry Poppins        aCustomers 9   John Wayne         document write aCustomers 0        document write aCustomers 1        document write aCustomers 2        document write aCustomers 3        document write aCustomers 4        document write aCustomers 5        document write aCustomers 6        document write aCustomers 7        document write aCustomers 8        document write aCustomers 9       function DisplayFishCounts        function FindJonGalt          lt  script gt   lt  head gt    lt body gt   lt form name  Main  gt   lt input type  button  id 1 onclick  SayHello     value  Say Hi   gt   lt input type  button  id 1 onclick  DumpCustomers     value  Dump Customers   gt   lt input type  button  id 1 onclick  DisplayFishCounts     value  Display Fish Counts   gt   lt input type  button  id 1 onclick  FindJonGalt     value  Where is Jon Galt    gt    lt  form gt   lt  body gt   lt  html gt

User · Accepted Answer

If you want to see the array as an array, you can say

alert(JSON.stringify(aCustomers));

instead of all those document.writes.

http://jsfiddle.net/5b2eb/

However, if you want to display them cleanly, one per line, in your popup, do this:

alert(aCustomers.join("\n"));

http://jsfiddle.net/5b2eb/1/

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