To make a string out of a string and a passed variable in JS use concatenation to combine the variable to another string.
Simply just add a plus sign+ between the strings or string variables you want to connect.
<script>
let animal = 'Horse';
console.log('My favorite animal is the ' + animal + '.');
</script>
JavaScript concatenate string and variable Example
HTML example code:-
String and String variable or String and integer variable both are concatenated same way in JavaScript.
<html>
<body>
<script>
let animal = 'Horse';
console.log('My favorite animal is the ' + animal + '.');
var day = "6"
console.log("Today day is " + day);
</script>
</body>
</html>
Note: You can use a single quote or a double quote it doesn’t matter as long as your opening and closing quotes are the same.
Output:
Do comment if you have any doubts and suggestions on this Variable and string topic of JS.
Note: The All JS Examples codes are tested on the Firefox browser and the Chrome browser.
OS: Windows 10
Code: HTML 5 Version