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Regular expression to check the currency upto 2 digit in JavaScript

Regular expression to check the currency upto 2 digit in JavaScript such as 34, 45.45, 567.45 etc. <html> <head> <script type="text/javascript"> var reg = /^\d+(\.\d\d)?$/; function CurrencyValidation(Currency) { var OK = reg.exec(Currency.value); if (!OK) window.alert("Currency isn’t valid"); else window.alert("Currency is valid"); } </script> </head> <body> <p>Enter your Currency up to two decimal numbers … Continue reading “Regular expression to check the currency upto 2 digit in JavaScript”

Regular expression for password validation in JavaScript

Following example show that how we can validate password with the help of Regular Expression that have these validation: Must be at least 10 characters Must contain at least one one lower case letter, one upper case letter, one digit and one special character Valid special characters are – @#$%^&+= <html> <head> <script type="text/javascript"> … Continue reading “Regular expression for password validation in JavaScript”

Display the number with floating point without rounding in JavaScript

Sometime you need to display the result with floating points of the some mathematical calculation without rounding off such as you have the value 12.56667, you want to display 12.56. This is useful when you are playing with Currency.

How to prevent your javaScript code from syntax errors

The Syntax error in the JavaScript code is very common error type when your write the code. Generally when you write the wrong structure of the JavaScript code , browser will give the syntax error at the time of interpretation. Small syntax error in the JavaScript code on a Web page can stop the script … Continue reading “How to prevent your javaScript code from syntax errors”

How to know whether string contains special characters or not in JavaScript

In this section I will show you that how we can use the simple regular expression to know whether the specified string contains the special characters or not.

How to remove leading and trailing spaces from a string in JavaScript.

Some browsers gives an error when you use the function like trim() with string in JavaScript as ‘unknown function or property’. For it we can use a regular expression that will replace all extra spaces at the start and end of the string with an empty string.

Validate URL starts with http: in javascript

Regular expression for validating url that starts with http: in JavaScript such as https://www.authorcode.com. <html> <head> <script type="text/javascript"> var reg = /^(ht|f)tp(s?)\:\/\/[0-9a-zA-Z]([-.\w]*[0-9a-zA-Z])*(:(0-9)*)*(\/?)([a-zA-Z0-9\-\.\?\,\’\/\\\+&%\$#_]*)?$/; function URLValidation(url) { var OK = reg.exec(url.value); if (!OK) window.alert("URL isn’t valid"); else window.alert("URL is valid"); } </script> </head> <body> <p>Enter your url address then press Enter.</p> <form action=""> <input name="txturl" … Continue reading “Validate URL starts with http: in javascript”

How to validate email address in JavaScript

Regular expressions are a right way to validate text fields such as email addresses, phone numbers, names, age, date and other input information.

How to validate phone number in JavaScript

Regular expressions are a right way to validate text fields such as phone numbers, names, addresses, age, date and other input information. You can use them to constrain input, apply formatting rules, and check lengths.

Regular expression for validating format of website Address in vb.net

Regular expressions are a good way to validate text fields such as date,names, addresses, phone numbers, and other user information. You can use the System.Text.RegularExpressions.Regex class for validate any input string for any specific format. The following example will allow you to Input valid website address only: