Marusya's School Notes

The concat() Method

To join two or more strings, use the concat() method:

   var text1 = "Hello";
   var text2 = "World";
   text3 = text1.concat(" ",text2);

HTML file:	Displayed by browser:
<body> <p>The concat() method joins two or more strings:</p> <p id="demo"></p> <script> var text1 = "Hello"; var text2 = "World!"; document.getElementById("demo").innerHTML = text1.concat(" ",text2); </script> </body>	The concat() method joins two or more strings:

HTML file:

Displayed by browser:

<body>
<p>The concat() method joins two or more strings:</p>
<p id="demo"></p>
<script>
    var text1 = "Hello";
    var text2 = "World!";
    document.getElementById("demo").innerHTML = text1.concat(" ",text2);
</script>
</body>

The concat() method joins two or more strings:

The concat() method can be used instead of the plus operator. These two lines do the same:

var text = "Hello" + " " + "World!";
var text = "Hello".concat(" ","World!");

All string methods return a new string. They don't modify the original string. In other words, strings are immutable: they cannot be changed, only replaced.