What is a Mixed Chart (Bar + Line) ?

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A Mixed Chart allows you to combine multiple chart types (like a bar chart + line chart) in one canvas using Chart.js. It’s perfect for comparing different data series…

What is a Scatter Chart ?

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A Scatter Chart (or Scatter Plot) is a type of chart that displays individual data points on a 2D grid, based on two variables — X and Y.

How to Store, Read, Update & Delete Cookies in JavaScript

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JavaScript cookies are small data stored on a user's device by a web browser. These cookies play a crucial role in web development, enabling websites to store and…

What is a Bubble Chart ?

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A Bubble Chart is a type of scatter plot where each point is represented by a bubble, and the size of the bubble represents a third data dimension.

What is sessionStorage?

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JavaScript sessionStorage is a web storage technique that stores data for the duration of a page session. The sessionStorage object lets you store key/value pairs in the…

What is a Polar Area Chart ?

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A Polar Area Chart is a circular graph similar to a pie chart, but with a twist:
Each slice has the same angle, and its radius represents the value.

What is localStorage?

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JavaScript localStorage is a feature that lets you store data in your browser using key-value pairs. The data stays saved even after you close the browser, so it can be…

What is a Radar Chart ?

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A Radar Chart (also called a Spider Chart or Web Chart) displays multidimensional data on a circular graph. Each axis represents one variable, and values are plotted as…

What is a Doughnut Chart ?

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A Doughnut Chart is just like a Pie Chart, but with a hole in the center. It shows proportions of data as slices of a ring — useful for comparing parts of a whole (100%).

What is a Pie Chart ?

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A Pie Chart is a circular chart divided into slices to show proportions of a whole. Each slice represents a percentage or fraction of a category compared to the total.

Local Storage vs Session Storage vs Cookies: Complete Comparison (2025)

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The HTTP protocol is one of the most important protocols for smooth communication between the server and the client. The main disadvantage of the HTTP protocol is that…

What is a Bar Chart (Horizontal & Vertical) ?

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A Bar Chart is a graph that represents data using rectangular bars. Each bar’s length represents the value of the data it shows.