Okay, so you know how sometimes you want to make sure that your toys are working the way they should be? You might check to see if a button still makes a noise or if a wheel still spins. Well, grown-up people who make computer programs and websites also want to check if their "toys" (AKA code) are working correctly.
That's where Jasmine comes in! Jasmine is like a special tool that helps grown-up people test their code. It checks to see if the code is doing what it's supposed to be doing. For example, if someone made a toy that's supposed to light up, Jasmine can check to make sure that when they press a button, the toy actually does light up.
But how does Jasmine know what to check? The grown-up person who wrote the code has to tell Jasmine what to look for. It's kind of like giving Jasmine a list of all the buttons that are supposed to make the toy light up, and then Jasmine goes through and checks all of them.
Overall, Jasmine helps grown-up people feel more confident in their code, and helps make sure that their "toys" work properly for everyone to play with!