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36 lines
2.2 KiB
36 lines
2.2 KiB
2 years ago
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## Mouse trap
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### Instructions
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Develop a trap to capture the elements when the mouse is getting too close to the center of the page!
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- Create a function `createCircle`: make it fire on every click on the page, and create a `div` at the position of the mouse on the screen, setting its `background` to `white` and its class to `circle`
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- Create a function `moveCircle`: make it fire when the mouse moves, and get the last circle created and makes it move along with the mouse
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- Create a function `setBox` which sets a box with the class `box` in the center of the page ; when a circle is inside that box, it has to be purple (use the CSS global variable `var(--purple)` as `background`) ; once a circle enters the box, it is trapped inside and cannot go out of it anymore.
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> Hint: Be careful, a circle cannot overlap the box which has walls of `1px`, it has to be trapped **strictly** inside.
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### Notions
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- [`addEventListener()`](https://developer.mozilla.org/en-US/docs/Web/API/EventTarget/addEventListener): `click`, `mousemove`
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- [`removeEventListener()`](https://developer.mozilla.org/en-US/docs/Web/API/EventTarget/removeEventListener)
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- [Mouse event](https://developer.mozilla.org/en-US/docs/Web/API/MouseEvent/MouseEvent): [`click`](https://developer.mozilla.org/en-US/docs/Web/API/Element/click_event), [`mousemove`](https://developer.mozilla.org/en-US/docs/Web/API/Element/mousemove_event) / [`clientX`](https://developer.mozilla.org/en-US/docs/Web/API/MouseEvent/clientX), [`clientY`](https://developer.mozilla.org/en-US/docs/Web/API/MouseEvent/clientY)
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- [`getBoundingClientRect()`](https://developer.mozilla.org/en-US/docs/Web/API/Element/getBoundingClientRect)
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### Provided files
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### Files
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You only need to create & submit the JS file `mouse-trap.js` ; we're providing you the following file to download (click right and save link) & test locally:
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- the HTML file [mouse-trap.html](./mouse-trap.html) to open in the browser, which includes:
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- the JS script which will allow to run your code
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- some CSS pre-styled classes: feel free to use those as they are, or modify them
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### Expected result
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You can see an example of the expected result [here](https://youtu.be/qF843P-V2Yw)
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