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Array in JavaScript



Array in JavaScript


In JavaScript arrays are collection of multiple values by using a single variable.Arrays are index based,so that we can get array elements very easily by using index values.
In JavaScript we have multiple ways to create an array.

Array creation by using literals

We can declare arrays by using literals ,generally we use square brackets [] to denotes an array. 

  <script>
  
var a = [10, 20, 30, 40, 50];
for (var i = 0; i < a.length; i++) {
  document.writeln("Array Elements " + a[i] + "<br>");


}

</script>



Array Creation By using Array class

We can create an array by using Array directly by using new keyword in javascript. 


  <script>  
    
var arr = new Array();
arr[0] = "banana";
arr[1] = "papaya";
arr[2] = "grapes";
arr[3] = "guvava";
arr[4] = "orange";

for (var i = 0; i < arr.length; i++) {
  document.writeln("Array Element " + arr[i] + "<br>");
}

</script>


Array Creation By using Array Constructor

We can create an array by using Array constructor as pass the values as well inside the constructor only. 


  <script>

         
var arr = new Array("banana", "papaya", "papaya", "grapes", "guvava");
for (var i = 0; i < arr.length; i++) {
  document.writeln("Array Elements are  " + arr[i] + "<br>");
}

</script>



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