javascript 建立數組

javascrip 建立數組

建立數組

有幾種不同的方法來建立一個數組。建立數組的數組參與（）構造舊的方式。

JavaScript數組是動態，你可以聲明一個數組，不通過任何與陣列參數（）構造。

在這種情況下，您將建立一個沒有元素的空數組。

Select ActionSelect AllTry It<script type="text/javascript教程">

//We initialize the array using the array() constructor.
var first_array = new Array();

first_array[0] = "This is an element";
first_array[1] = 5;
first_array[2] = "JavaScript - Tutorial";
first_array[3] = 16;
first_array[4] = 7;

var counter=0;

//Let's print out the elements of the array.
for (counter=0; counter<first_array.length; counter++)
   document.write(first_array[counter] + "<br>");

</script>

Select ActionSelect AllTry It<script type="text/javascript">

//We declare the first array and pass a single integer as an argument..
var cars = new Array(5);

cars[0] = "Audi";
cars[1] = "Bentley";
cars[2] = "Mercedes";
cars[3] = "Mini";
cars[4] = "BMW";

//Now we declare the second array and pass 8 arguments.
//This technique does not work in JavaScript 1.2.
var flowers = new Array("Rose", 2.45, "Daisy", 1.57, "Orchild", 0.75,

"Tulip", 1.15);

var counter=0;
document.write("<h1>Elements of the first array:</h1>");

for (counter=0; counter<cars.length; counter++)
   document.write(cars[counter] + "<br>");

counter=0;
document.write("<h1>Elements of the second array:</h1>");

for (counter=0; counter<flowers.length; counter++) {

   if (counter % 2 == 0) {
      document.write(flowers[counter] + " costs ");
   }
   else {
      document.write(flowers[counter] + "<br>");
   }

}

</script>