The indexOf() method with Array

The indexOf() method returns the position of the first occurrence of a specified value in a array.
The indexOf() method is case sensitive!
Note: This method returns -1 if the string value to search for never occurs.

Pas2JS pascal source code


var
  a: array of string;
  s: string;

begin
  if a.IndexOf('J' + s) >= 0
    then Writeln('bug1');

  a.Add('J');

  if a.IndexOf('J' + s) <> 0
    then Writeln('bug2');

  s := 'j';

  if a.IndexOf('J' + s) >= 0
    then Writeln('bug3');

  a.Add('Jj');
  Writeln(a.IndexOf('J' + s)); // 1

  s := '';
  Writeln(a.IndexOf(s + 'j')); // -1
  s := 'J';
  Writeln(a.IndexOf(s + 'j')); // 1
 WriteLn('----------');

  a.Add('Hello world');
  Writeln(a.IndexOf('Hello'));       // -1
  Writeln(a.IndexOf('Hello World')); // -1
  Writeln(a.IndexOf('Hello world')); // 2
  Writeln(a.IndexOf('World'));       // -1
  Writeln(a.IndexOf('world'));       // -1


      var a = [],
         s = "";
      if (a.indexOf("J"+s)>=0) {
         WriteLn("bug1");
      }
      a.push("J");
      if (a.indexOf("J"+s)) {
         WriteLn("bug2");
      }
      s = "j";
      if (a.indexOf("J"+s)>=0) {
         WriteLn("bug3");
      }
      a.push("Jj");
      WriteLn(a.indexOf("J"+s));
      s = "";
      WriteLn(a.indexOf(s+"j"));
      s = "J";
      WriteLn(a.indexOf(s+"j"));
      
	  WriteLn("----------");
      a.push("Hello world");
      WriteLn(a.indexOf("Hello"));
      WriteLn(a.indexOf("Hello World"));
      WriteLn(a.indexOf("Hello world"));
      WriteLn(a.indexOf("World"));
      WriteLn(a.indexOf("world"));