Check if a string contains a substring in JavaScript

December 30, 2022

Since ES6 you can now use the built in includes method eg string.includes(substring).

For example

"testing".includes("test");
// true

One thing to note is this is case sensitive so the below will be false.

"Testing".includes("test");
// false

There is also an optional position param which defaults to 0.

For example the below will return true.

"sand".includes("and");
"sand".includes("and", 1);

However this will return false, because we are only including the part of the string after charecter 2 eg nd

"sand".includes("and", 2);

For more information be sure to read about includes on the MDN website.

Check if a string contains a substring in JavaScript

December 30, 2022

Since ES6 you can now use the built in includes method eg string.includes(substring).

Create a Cricket Points Table in Javascript - Part 5

August 12, 2019

In this tutorial we are going to build our points table based off our previous work.

Create a Cricket Points Table in Javascript - Part 4

August 11, 2019

In this tutorial we are going to complete the rest of the calculations required for the points table.

Create a Cricket Points Table in Javascript - Part 3

August 10, 2019

In this tutorial we are going to create functions to calculate the total number of wins, losses, no results and points a team has for the tournament.

Create a Cricket Points Table in Javascript - Part 2

August 9, 2019

In this tutorial we are going to create a function to calculate when a team has won, lost or there is no result.

Create a Cricket Points Table in Javascript - Part 1

August 8, 2019

In this tutorial we are going to Create a Cricket Points Table in JavaScript.

Create a weather voice assistant in React

July 3, 2019

In this tutorial we are going to create a simple React app that will use the speechSynthesis API to speak the current temperature in the city we type in.

Getting to know the many voices in your browser

July 3, 2019

The Speech Synthesis API has been around since about 2014 but still has not gained a huge amount of traction on many sites.

How to create a custom sort order in javascript

June 14, 2019

When sorting an array of objects in JavaScript, usually we will want to sort alphabetically or numerically, but there are also some cases were we might need a custom sort order.