Difference Between parseInt() and Number() in JavaScript

parseInt(string)

The parseInt() method parses up to the first non-digit and returns the parsed value.  

For example, the following returns 765:

parseInt("765world")

Let’s take another example. The following returns 50:

parseInt(‘50px”);

Number(string)

Number() converts the string into a number, which can also be a float BTW.

For example, the following returns NaN:

Number(“765world”)

The following returns NaN:

Number(“50px”);