Do you have anything to add to the tutorial? The function check_for_numbers(element) checks if a number exists in a string through a pattern /[0-9]+/gm. JavaScript check if first string contains all characters of second string Return true if the string in the first element of the array contains all of the letters of the string in the second element of the array. The method patter.test(textInput) returns true only if the string contains numbers which we have specified in regular expression pattern [0-9]. The [regx string].test(val) returns the true and false value. I need ur appreciated help. how can i add characters to preg_match() in order to find not just 1 special characters To check multiple special characters u can use preg_match too. We have a string as an input. In the following example I am using the .test() JavaScript method. 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. any character except newline \w \d \s: word, digit, whitespace \W \D \S: not word, digit, whitespace [abc] any of a, b, or c [^abc] not a, b, or c [a-g] character between a & g: Anchors ^abc$ start / end of the string \b: word boundary: Escaped characters \. I need check that you enter only letters, numbers and special characters ",", "." Character classes. It is available after ECMAScript 6, and hence needs to be used with caution. We need to check if it contains any characters other than digits ( ie. and ";" in the TextareaS1 field. Hi there. This method returns true if the string contains the characters, and false if not. TAGs: JavaScript, Regular Expressions, … Check a password between 6 to 20 characters which contain at least one numeric digit, one uppercase and one lowercase letter. Rohit Check if a string includes "world", starting the search at … While RegExp.test() is a great method to use, special characters can be a problem. Here Mudassar Ahmed Khan has explained with an example, how to check if TextBox contains Special Characters in JavaScript. Please suggest any RFC / Logic to get this . The includes() method determines whether a string contains the characters of a specified string. javascript code to check special characters, In Chrome, even if the string does not contain special characters, it says it contains special characters. This is the function CheckmyForm. 0123456789) The other characters could be special characters, albhabets etc. There u need to specify the characters u like to check using separator. It directly checks if the substring is present or not and returns a boolean value. Check if the string has special characters This article will illustrate how to use Regular Expression which allows Alphabets and Numbers (AlphaNumeric) characters with Space to check whether the value entered in the TextBox contains Special Characters or not. I'm giving u an example. Javascript answers related to “check string contains special characters javascript” check if a string contains digits js check if something is a letter in js Check Datasource Data For Special Characters & Empty Fields Regex which will accept alphanumeric with special characters How to check space and special characters in textbox using a … String.contains() The last method is String.contains(). Check a password between 7 to 16 characters which contain only characters, numeric digit s and underscore and first character must be a letter.