To add two strings we need a '+' operator to create some space between the strings, but when the first string itself has a space with in it, there is no need to assign space explicitly.
In the following example since the string 'str1' has a space with in it, just only concatenation without space is adequate to add both the strings.
Example
<html>
<body>
<script>
function str(str1, str2) {
return (str1 + str2);
}
document.write(str("tutorix is the best ","e-learning platform"));
</script>
</body>
</html>Output
tutorix is the best e-learning platform
In case if there is no space exist in first string then we have to create space(" ") and join the two strings as shown below.
Example
<html>
<body>
<script>
function str(str1, str2) {
return (str1 + " " + str2);
}
document.write(str("tutorix is the best","e-learning platform"));
</script>
</body>
</html>Output
tutorix is the best e-learning platform