how to use trim in node js
To use the trim
function in Node.js, you can follow these steps:
Step 1: First, you need to ensure that you have Node.js installed on your system. If you don't have it installed, you can download and install it from the official Node.js website.
Step 2: Create a new JavaScript file with a
.js
extension. You can use any text editor or integrated development environment (IDE) to create the file.Step 3: In your JavaScript file, you can use the
trim
function to remove leading and trailing whitespace from a string. Thetrim
function is a built-in function in JavaScript that is also available in Node.js.
Here's an example of how to use the trim
function:
javascript
const str = ' Hello, World! ';
const trimmedStr = str.trim();
console.log(trimmedStr); // Output: 'Hello, World!'
In the above example, the trim
function is called on the str
variable, which contains a string with leading and trailing whitespace. The trim
function removes the whitespace, and the result is stored in the trimmedStr
variable. Finally, the trimmed string is printed to the console.
Note: The trim
function does not modify the original string; it returns a new string with the leading and trailing whitespace removed.
Step 4: Save the JavaScript file.
Step 5: Open a terminal or command prompt and navigate to the directory where you saved the JavaScript file.
Step 6: Run the JavaScript file using the
node
command followed by the filename. For example, if your file is namedtrimExample.js
, you would run the following command:
node trimExample.js
The output will be displayed in the terminal or command prompt, and you should see the trimmed string printed.
That's it! You have successfully used the trim
function in Node.js to remove leading and trailing whitespace from a string.
Please let me know if you need further assistance!