regex pattern for special characters in angular

RegExp.prototype.unicode contains more explanation about this. A regular expression pattern is composed of simple characters, such as /abc/, or a combination of simple and special characters, such as /ab*c/ or /Chapter (\d+)\.\d*/ . dot character . It returns an array of information or, Tests for a match in a string. [^a-c]. (For zero or more characters), Pattern regex = Pattern.compile("([a-zA-Z0-9])+"); Q1: Is this RegEx not match with my requirement? However, in As shown in the second form of this example, you can use a regular expression created with an object initializer without assigning it to a variable. The last example includes parentheses, which are used as a memory device. escape sequences like \p or \k. Equivalent to All browser compatibility updates at a glance, Frequently asked questions about MDN Plus. also matches immediately after a line break character. We have to call a validation function on keypress, paste and input event. Chinese for example, japanese, cyrilic, sanscrit, etc please never do this its bad. \-, \@ will be equivalent to their literal, Thus, you should remove the anchors, and the quantifier *. Regular expressions are used with the RegExp methods test() and exec() and with the String methods match(), replace(), search(), and split(). m > n, matches at least "n" and at most "m" occurrences of the preceding Same case with $: the preceding subpattern should match right at the end of the string. first "A" in "An A". Returns an iterator containing all of the matches, including capturing groups. Angular Custom Directive- Allow Only Number/Decimal - User should be restricted to enter only number, AngularJS Validation Tutorial | AngularJS Validation for all Input fields on Form Submission, Restrict Text Input Characters HTML Javascript | How To Make Html Input Text Allow Only Numeric, Prevent Special Character Validation In AngularJS, Restrict First Character Space Inside An Input Field In Angular || Angular || Angular Tutorial. /\\/. Matches the end of input. Groups and backreferences indicate groups of expression characters. Just the stuff I looked for. new thing": Unicode property escapes allow for matching characters based on their Unicode properties. If you only rely on ASCII characters, you can rely on using the hex ranges on the ASCII table. This is /^ [A-Za-z0-9]+$/ Click To Copy Examples: Regex999 Pattern666 RegexPattern123 See Also: Currency Regular Expression Decimal Number Regular Expression Regular Expression To Match Only Alphabets And Spaces Characters & constructs: The match made with this part of the pattern is remembered for later use, as described in Using groups . For example, given a string like "some The match made with this part of the pattern is remembered for later use, as described in Using groups. I suggest using RegExp .test() function to check for a pattern match, and the only thing you need to change is remove the start/end of line anchors (and the * quantifier is also redundant) in the regex: The anchors (like ^ start of string/line, $ end od string/line and \b word boundaries) can restrict matches at specific places in a string. of times). @AlanMoore, good to know! How dry does a rock/metal vocal have to be during recording? preceded by a minus sign. followed by "y". \ is the escape character for RegEx, the escape character has two jobs: Take special properties away from special characters: \. For example, /(?\w+), yes \k