Concat of method of array in javascript

  • 2020-03-30 00:57:07
  • OfStack

 
<html> 
<head> 
<title> An array of concat() methods </title> 

<script> 
 

var arr1 = [123,"aaa"]; 
var arr2 = [false,333]; 
var arr3 = [true,"ddd"]; 
//You can continue to concatenate arrays or other elements
document.write(arr1.concat(arr2,arr3,"vvv") + "<br/>");//123,aaa,false,333,true,ddd,vvv 
//The original array has not changed
document.write(arr1);//123,aaa 
</script> 

</head> 

<body> 
<div id="time"></div> 
</body> 

</html> 

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