Edit in JSFiddle

<p id="array1"></p>
<p id="array2"></p>
<p id="array3"></p>

<h3>Concatenating 2 arrays</h3>
<p id="arrayConcat2"></p>

<h3>Concatenating 3 arrays</h3>
<p id="arrayConcat3"></p>

var array1 = ["one", "two", "three", "four", "five"];
var array2 = ["1", "2", "3", "4", "5"];
var array3 = ["Jack", "Thierry", "Cesc", "Santi"];


$("#array1").html("<b>Array1 : </b>" + array1);
$("#array2").html("<b>Array2 : </b>" + array2);
$("#array3").html("<b>Array3 : </b>" + array3);

var concatenatedArray2 = array1.concat(array2);
$("#arrayConcat2").html("<b>After concat : </b>" + concatenatedArray2);

var concatenatedArray3 = array1.concat(array2, array3);
$("#arrayConcat3").html("<b>After concat : </b>" + concatenatedArray3);