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shirshah sahel
10,035 Pointsfor loop
I have typed the code below in my workspace, it is a for loop in order to uppercase and lowercase the listitems but I dont know what I am missing and it is not working. any ideas will be appreciated.
for(let i=0; i<listItems.length; i+=1){
listItems[i].addEventListener( 'mouseover', ()=>{
listItems[i].textContent = listItems[i].textContent.toUpperCase();
});
listItems[i].addEventListener( 'mouseout', ()=>{ listItems[i].textContent=listItems[i].textContent.toLowerCase();
}); }
2 Answers
Ezra Siton
12,644 PointsHi. First Markdown your code in the future.
Next. You cannot loop throw listItems[i] without any assignment for this var. Give you this error
JavaScript error: Uncaught ReferenceError: listItems is not defined on line 4
/* Dont forget to assign HTMLCollection value to listItems before you trying to loop throw this var
var listItems = document.getElementsByTagName('li');
for(let i=0; i<listItems.length; i+=1){ listItems[i].addEventListener( 'mouseover', ()=>{ listItems[i].textContent = listItems[i].textContent.toUpperCase();
});
listItems[i].addEventListener( 'mouseout', ()=>{ listItems[i].textContent=listItems[i].textContent.toLowerCase();
}); }
https://developer.mozilla.org/en-US/docs/Web/API/Element/getElementsByTagName
shirshah sahel
10,035 PointsThank you for your time Ezra Siton. I will markdown my code next time to be more readable.