JavaScript DHTML/Data Type/Two Dimensional Array

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Another way to declare the two-dimensional array

  

<html>
  <head>
    <title>Array literal</title>
    <script type="text/javascript" >
var planets = [
    ["A", "B", "C"],
    ["D", "E", "F"]
    ];
    
for (var i = 0; i < planets.length; i++)
{
  for (var j = 0; j < planets[i].length; j++)
  {
    document.write("planets[" + i + "][" + j + "] = " + planets[i][j]);
    document.write("<BR>");
  }
}    
    </script>
  </head>
  <body>
  </body>
</html>



Sort two dimensional array

  
<html>
  <head>
    <title>Array literal</title>
    <script type="text/javascript" >
function compare(a, b)
{
  return a[1] - b[1];
}
var planets = [
    ["A", 0.3],
    ["B", 0.9],
    ["C", 1],
    ["D", 0.8],
    ["E", 2.4]
    ];
planets.sort(compare);

document.write(planets);

    </script>
  </head>
  <body>
  </body>
</html>



Use nested for loop to loop through the two-dimension array

  
<html>
  <head>
    <title>Array literal</title>
    <script type="text/javascript" >
var planets = new Array(
    new Array("A", "B", "C"),
    new Array("D", "E", "F")
    );
    
for (var i = 0; i < planets.length; i++)
{
  for (var j = 0; j < planets[i].length; j++)
  {
    document.write("planets[" + i + "][" + j + "] = " + planets[i][j]);
    document.write("<BR>");
  }
}    
    </script>
  </head>
  <body>
  </body>
</html>



Use two-dimensional array to store matrix data

  
<html>
  <head>
    <title>Array literal</title>
    <script type="text/javascript" >
var planets = [
    [1, "K", "F", "M", "1:45"],
    [2, "N", "G", "M", "3.8"],
    [3, "M", "A", "W", "8.4"],
    [4, "F", "S", "R", "6.4"],
    [5, "J", "C", "M", "6.6"]
    ];
for (var i = 0; i < planets.length; i++)
{
  for (var j = 0; j < planets[i].length; j++)
  {
    document.write("planets[" + i + "][" + j + "] = " + planets[i][j]);
    document.write("<BR>");
  }
}    
    </script>
  </head>
  <body>
  </body>
</html>
Источник — «http://wbex.ru/index.php?title=JavaScript_DHTML/Data_Type/Two_Dimensional_Array&oldid=1743»