To hold onto new values, JavaScript uses something called bindings, or variables. For example: This translates into: Create a binding named holdThisValue and use it to grab a hold of the product of 4 * 5. So you see the keyword let? It means that this statement is going to be a binding. The next … Read more
JavaScript is built to be innovative and smart. Some other languages aren’t built to auto-convert types to other types, so an expression can be easily evaluated. In JavaScript, it can automatically change numbers to strings and words to numbers as long as it’s in the appropriate setting. Take for example: JavaScript can automatically convert null … Read more
In particular, there are 2 special types of results that actually have no value in them. What are null and undefined? The null and the undefined special values have no meaning. They simply exist when there’s no answer and something has to show up for it. Are null and undefined values the same? The null … Read more
When JavaScript says something is undefined, it literally means that there’s no meaning or value for the value you’re searching for. You basically haven’t assigned a value to the variable yet. Check out this example of something being undefined: This output will show undefined because you didn’t initialize or assign “thisVariable” a value. The correct … Read more
What are values in JavaScript? Javascript has a concept called values. There are actually 6 fundamental value types: Numbers Strings Booleans Functions Objects Undefined You can invoke or call a JavaScript Value If you want to create a value, you simply have to invoke or call it. Of course, these values have to be stored … Read more