How To Validate A Phone Number With Node Js Javascript The following is a code snippet to demonstrate how to validate the form using an onsubmit handler. normally you would output a message to the user with a call to alert.but since that is not supported in these code snippets, i have used calls to console.log instead. Validate phone number with javascript regex.
How To Validate A Phone Number With Node Js Javascript Then, we test the phone number using the test method available in the object. using an if else statement, we check if the phone number passes the test. if it does, we return true and send a console message stating that the phone number is valid. otherwise, it returns false and displays a console message indicating that the phone number is not. Validate phone number using javascript regex. Now that we understand how to send an api request, and know what information we should expect to get back, let’s use the api to validate a phone number in a node.js app. spin up a simple node.js app. this tutorial assumes that you either have an existing node.js app or that you’re familiar enough with node to get one running on your computer. In your terminal navigate to the directory containing lookup.js and run this command: java. node lookup.js. this basic functionality is free, but you can get more information by doing a carrier lookup. carrier lookups are commonly used to determine if a number is capable of receiving sms mms messages.
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