The JavaScript method toString() converts an array to a string of (comma separated) array values.
Example
const fruits = ["Banana", "Orange", "Apple", "Mango"];
document.getElementById("demo").innerHTML = fruits.toString();
document.getElementById("demo").innerHTML = fruits.toString();
Result:
Banana,Orange,Apple,Mango
The join() method also joins all array elements into a string.
It behaves just like toString(), but in addition you can specify the separator:
Example
const fruits = ["Banana", "Orange", "Apple", "Mango"];
document.getElementById("demo").innerHTML = fruits.join(" * ");
document.getElementById("demo").innerHTML = fruits.join(" * ");
Result:
Banana * Orange * Apple * Mango
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