String and addition operator (+) : Arithmetic operator : Operators JAVASCRIPT TUTORIALS

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String and addition operator (+)

If the values on either side of the addition operator are strings, the strings are concatenated together.

If only one of the values is a string, the other value is converted to a string and concatenated with the first value.



<html>
<SCRIPT LANGUAGE="JavaScript">
<!--
    var sStringVar1 = "Hello";
    var sStringVar2 = "World";
    var nNumVar1 = 5;
    var nNumVar2 = 10;

    var sStringTotal = sStringVar1 + sStringVar2;
    var nNumTotal = nNumVar1 + nNumVar2;
    var sStringNumTotal = sStringTotal + nNumTotal;


    document.write("<b>The string total is: </b>"+sStringTotal+"<BR>");
    document.write("<b>The numeric total is: </b>",nNumTotal,"<BR>");
    document.write("<b>The string + numeric total is: </b>",sStringNumTotal);

-->
</SCRIPT>
</html>