December 15, 2024

Add and remove css class using JavaScript

We can use JavaScript to add or remove CSS classes from elements. There are several methods available for this purpose. The first method is the classList.add / classList.remove functions, which allows us to add/remove a CSS class to a selected element.

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December 01, 2024

Check if a checkbox is checked or not using JavaScript

For checking if a checkbox is checked using JavaScript, we can access the checked property of the checkbox element. Below is a simple example:

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August 17, 2024

JavaScript Comment

If you want to write some notes in your JavaScript code file which you do not want to execute but want to include in your JavaScript code file for better understanding your code. So for it you can create comments in JavaScript.

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August 17, 2024

JavaScript String To Upper Case

You can convert a string into upper case (all letters in capital letters) with the help of toUpperCase function. The example of toUpperCase method mentioned below:

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August 17, 2024

JavaScript String To Lower Case

You can convert a string into lower case (all letters in small letters) with the help of toLowerCase function. The example of toLowerCase method mentioned below:

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August 17, 2024

JavaScript indexOf

Sometimes you want to know the position of a character or sub string from a string so for it you can use indexOf method of string object. indexOf object returns a numeric value (index value) of the character or a sub string from a string which you want to know about.

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August 17, 2024

JavaScript String Compare

Comparison of two strings in JavaScript is very easy task. Like integer values you can also compare string objects with the help of equal to operator (==) inside of if conditional statement.

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August 17, 2024

JavaScript String Replace

You can replace a word or even a string from a string through replace method of string object in JavaScript. replace method required two string parameter to make replacement on the string first parameter old string which you want to replace and second parameter is new string which you want to replace with old string. You can also make replacement on the basis of regular expression.

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August 17, 2024

JavaScript String Search

You can search a word or even a string from a string through search method of string object in JavaScript. Search method required a string parameter to make search on the string. You can also make search on the basis of regular expression. You can pass regular expression as an argument to search method.

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August 17, 2024

JavaScript String Concatenation

In JavaScript you can do string concatenation through + operator. + operator is a concatenation operator for string values and it also an addition operator for numeric values.

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