Javascript Articles - Page 595 of 671

To find a character except for a newline, use the Metacharacter. (period). You can try to run the following code to find a character −Example           JavaScript Regular Expression                        var myStr = "We provide websites! We provide content!";          var reg = /p.o/g;          var match = myStr.match(reg);                    document.write(match);          

In this tutorial, we learn how to find non-word characters in a string using JavaScript Regular Expression. Actually, word characters include A-Z, a-z, 0-9 and _. Coming to the non-word characters except word characters like !, @, #, $, %, ^, &, *, (, ), {, } etc. Non-word characters, we denote as \W. We all know about RegExp (Regular Expression) in JavaScript. RegExp is an object that specifies the pattern used to do a search and replace operations on a string or for input validation. RegExp was introduced in ES1 and it is fully supported by all browsers. ASCII ... Read More

To match an expression, use the JavaScript match() method. This method is used to retrieve the matches when matching a string against a regular expression. The following is the parameter −param − A regular expression object.If the regular expression does not include the g flag, it returns the same result as regexp.exec(string).If the regular expression includes the g flag, the method returns an Array containing all the matches.ExampleYou can try to run the following code to math an expression using JavaScript Regular Expression −           JavaScript String match() Method               ... Read More

The operator is used in JavaScript to check whether a property is in an object or not.ExampleYou can try to run the following code to learn how to use in operator in JavaScript −Live Demo                    var emp = {name:"Amit", subject:"Java"};          document.write("name" in emp);          document.write("");          document.write("subject" in emp);          document.write("");          document.write("MAX_VALUE" in Number);          document.write("");          document.write("MIN" in Number);          

We will learn how to add a row to a table using JavaScript dom. To achieve this, we have multiple methods. Some of them are the following. Using the insertRow() method By creating the new Element Using the insertRow() Method The inserRow() method is used to insert a new row at the starting of the table. It creates a new element and inserts it into the table. This takes a number as a parameter that specifies the position of the table. If we do not pass any parameter then it inserts the row at the starting of ... Read More

To perform multiline matching, use the M modifier available in JavaScript Regular Expression.ExampleYou can try to run the following code to perform multiline matching −           JavaScript Regular Expression                        var myStr = "Welcoming!";          var reg = /^ing/m;          var match = myStr.match(reg);                    document.write(match);          

To match any of the specified alternatives, follow the below-given pattern −(foo|bar|baz)ExampleYou can try to run the following code to find any alternative text −           JavaScript Regular Expression                        var myStr = "one,one,one, two, three, four, four";          var reg = /(one|two|three)/g;          var match = myStr.match(reg);          document.write(match);          

In this tutorial, we will learn how to perform Case Insensitive matching with JavaScript RegExp. Regular expressions can be declared in two ways − Using regular expressions literal, which start and end with slashes, and the pattern is placed in between. Calling the RegExp object constructor, which takes the pattern and flags in the parameters to create a regular expression. Users can use the below syntax to create a regular expression. Syntax //Using a regular expression literal const regex = /tutorial/i //Using RegExp constructor const regex2 = new RegExp('tutorial', 'i') In the above syntax, the regular expressions ... Read More

In this tutorial, we learn how to find the digits between brackets using JavaScript RegExp. The ASCII values for the digits (0-9) start from 48 to 57. We denote the digits in the bracket as [0-9] in the regular expression. To find the digits in a range except for all digits, we can write the particular range. As to find the digits between 4 and 8, we could write it as [4-8] in the regular expression pattern. Now, our aim is to find digits inside the brackets in the text using RegExp in JavaScript. We could follow the below syntaxes ... Read More

In JavaScript, the regular expression [^0-9] is used to find the characters inside the bracket but not a digit. Except digit mentioned in the bracket, it will return the remaining characters from the text as an array. We all know about RegExp (Regular Expression) in JavaScript. RegExp is an object that specifies the pattern used to do a search and replace operations on the string or for input validation. RegExp was introduced in ES1 and it is fully supported by all browsers. Syntax Syntax for non-digit or /[^0-9]/ character is- new RegExp("[^0-9]") or simply /[^0-9]/ Here /[^0-9]/ , ... Read More