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  • #15
  • #16
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  • 2018-07-20T12:14:25Z
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  • Hi @AvidLearner, congratulations on sorting your problem out! Pretty much all of the ways of return multiple element references will return an array that you need to loop through (whether it is getElementsByTagName, getElementsByName, or the more modern querySelectorAll). I don’t tend to give you an exact grade, as I just don’t have time to mark all the assessment entries in detail. What I can do is test your code (it is a little different to mine, but it works fine, well done), and give you links to the marking guide and finished code so you can check it yourself: Marking guide: https://github.com/mdn/learning-area/blob/master/javascript/building-blocks/gallery/marking-guide.md Live example: https://mdn.github.io/learning-area/javascript/building-blocks/gallery/ Source code: https://github.com/mdn/learning-area/blob/master/javascript/building-blocks/gallery/main.js
  • @chrisdavidmills I have some questions, though, if you don’t mind me asking. Here, my function sourceAlter only has the parameter e and therefore, I did not pass any parameters when I called the function, hence image[i].addEventListener('click', sourceAlter) without any parentheses and parameters. However, what if my function requires two parameters, e.g. sourceAlter(a, b), how do I pass on the parameters to said function? I don’t quite understand how looping works in JavaScript. It somehow does not make sense to me how for (...) in my code above worked. I do know that it loops five times (as expressed in the conditional statement i < image.length) and that whenever an image with the order i is clicked, we run a function. But, when we click picture 1, 2,3 and then 1 again, it somehow worked? There is not decrement in the for loop, so how did it happen? Is the loop run over again after each action (in this case, click (but doesn’t have to be necessarily a click))?
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  • "Image gallery" assessment
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