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The charCodeAt() method returns a number indicating the Unicode value of the character at the given index. Unicode code points range from 0 to 1, 114, 111. The first 128 Unicode code points are a direct match of the ASCII character encoding.The following parameter is supported by charCodeAt(index) −index − An integer between 0 and 1 less than the length of the string; if unspecified, defaults to 0.ExampleYou can try to run the following code to return a number indicating the Unicode value of the character −           JavaScript String charCodeAt() Method           ... Read More

Your server sends some data to the visitor's browser in the form of a cookie. The browser may accept the cookie. If it does, it is stored as a plain text record on the visitor's hard drive. Now, when the visitor arrives at another page on your site, the browser sends the same cookie to the server for retrieval. Once retrieved, your server knows/remembers what was stored earlier.Cookies are a plain text data record of 5 variable-length fields −Expires − The date the cookie will expire. If this is blank, the cookie will expire when the visitor quits the browser.Domain − The ... Read More

Use the JavaScript fixed() method to display in fixed-pitch font as if it were in a tag.ExampleYou can try to run the following code to display a string in the fixed-pitch font.           JavaScript String fixed() Method                        var str = new String("Hello world");          alert(str.fixed());          

The toLocaleString() method returns a string value version of the current number in a format that may vary according to a browser's local settings.ExampleYou can try to run the following code to return a string value version −           JavaScript toLocaleString() Method                        var num = new Number(150.1234);          document.write( num.toLocaleString());          

Use the toExponential() method to force a number to display in exponential notation, even if the number is in the range in which JavaScript normally uses standard notation.The following is the parameter −fractionDigits - An integer specifying the number of digits after the decimal point. Defaults to as many digits as necessary to specify the number.ExampleYou can try to run the following code to force a number to display in exponential function −           Javascript Method toExponential()                        var num=77.1234;          var ... Read More

To match any single character in the given set with JavaScript RegExp, use the [aeiou] metacharacter.Example           JavaScript Regular Expression                        var myStr = "Welcome to our website!";          var reg = /[we]/g;          var match = myStr.match(reg);                    document.write(match);          

In this tutorial, we will understand two approaches to display the document's title using JavaScript. Using document.title Property One of the most used methods in JavaScript to access an HTML document’s title is using a document.title property. In the following example, you will learn to get access to the title. After accessing the title in JavaScript, you can manipulate it and change the way it is displayed on a website. Syntax Here you can see how with the use onClick method, we can set the innerHTML of a paragraph within the document. The document.title is used to grab the title, ... Read More

To match any single character outside the given set with JavaScript RegExp, use the [^aeiou] metacharacter.Example           JavaScript Regular Expression                        var myStr = "Welcome!";          var reg = /[^lc]/g;          var match = myStr.match(reg);                   document.write(match);          

To match any string with p at the beginning of it with JavaScript RegExp, use the ^p Quantifier −Example           JavaScript Regular Expression                        var myStr = "Welcome to our website. We Learners!";          var reg = /^We/g;          var match = myStr.match(reg);                    document.write(match);          

To match any string containing a sequence of at least two p’s with JavaScript RegExp, use the p{2,} Quantifier.Example           JavaScript Regular Expression                        var myStr = "Welcome 1, 10, 100, 1000";          var reg = /\d{2,}/g;          var match = myStr.match(reg);          document.write(match);