You can reverse a string in JavaScript using a for
loop to iterate over the characters in the string and build a new string in reverse order. Here's an example:
javascriptvar str = "Hello, world!";
var reversedStr = "";
for (var i = str.length - 1; i >= 0; i--) {
reversedStr += str[i];
}
console.log(reversedStr); // Output: "!dlrow ,olleH"
In this example, we first create a string str
that we want to reverse. We then create an empty string reversedStr
that we will build up in reverse order.
We use a for
loop to iterate over the characters in the original string in reverse order, starting from the last character and ending at the first character. Inside the loop, we append each character to the reversedStr
variable using the +=
operator.
Finally, we output the reversedStr
variable, which contains the reversed string.
Note that this approach is less concise than the split()
, reverse()
, and join()
method chain, but it can be useful if you need to manipulate the characters in the string in a more complex way while reversing the string.
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