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  • #11
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  • 2018-06-02T21:15:30Z
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  • Hi there Patty, Thanks for sharing your solution. I had a bit of a play, and ended up with this: /* Looping through images */ function displayImage(e) { displayedImage.setAttribute('src', e.target.getAttribute('src')); } for(var i = 1; i <= 5; i++) { var newImage = document.createElement('img'); newImage.setAttribute('src', 'images/pic' + i + '.jpg'); thumbBar.appendChild(newImage); newImage.addEventListener('click', displayImage); } I think that if anything this is a better solution than our final example, although obviously I’ve got the function outside the solution. But you’ve improved on it by adding an event listener, rather than using an onclick handler function. Again, removing a function from the loop. It is generally considered bad practice to include a function inside a loop, as it can cause problems in some circumstances. It is better to define the function outside the loop and reference it from inside. I am going to update our example when I get the time to use something more like this. I’ve made a note of it. Thanks again for jogging me on this! To answer your questions: See above. There is flexibility here, but it does need to be placed after you have defined newImage, otherwise you’ll get an undefined error. the answer here is “it depends” — this stack overflow post provides useful reading on bthe matter: https://stackoverflow.com/questions/9973461/does-a-javascript-function-have-to-be-defined-before-calling-it
  • Hi guys, this is my code and it’s currently working. What do you think? /* Looping through images */ for (i = 1; i <= 5; i++) { var newImage = document.createElement(‘img’); newImage.setAttribute(‘src’, ‘./images/pic’ + i + ‘.jpg’); thumbBar.appendChild(newImage); newImage.onclick = getTheImage; function getTheImage(e, src) { var src = e.target.getAttribute(‘src’); displayedImage.setAttribute(‘src’, src); }; }; /* Wiring up the Darken/Lighten button */ btn.onclick = changeOverlay; function changeOverlay () { var cl = btn.getAttribute(‘class’); if (cl === ‘dark’) { btn.setAttribute(‘class’, ‘light’); btn.textContent = ‘Lighten’; overlay.style.backgroundColor = ‘rgba(0,0,0,0.5)’; } else { btn.setAttribute(‘class’, ‘dark’); btn.textContent = ‘Darken’; overlay.style.backgroundColor = ‘rgba(0,0,0,0)’; } };
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  • "Image gallery" assessment
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