Podcast
Questions and Answers
What is the purpose of the code snippet var span = document.createElement("SPAN");?
What is the purpose of the code snippet var span = document.createElement("SPAN");?
- To create a new list item
- To remove a list item from the list
- To append text to an existing list item
- To create a close button for each list item (correct)
What happens when the close button is clicked on a list item?
What happens when the close button is clicked on a list item?
- The list item is appended to the end of the list
- The list item is removed from the list
- The list item is moved to the top of the list
- The list item is hidden from view (correct)
What is the purpose of the event listener in the code list.addEventListener('click', function(ev) {...})?
What is the purpose of the event listener in the code list.addEventListener('click', function(ev) {...})?
- To display an alert message
- To add a new list item to the list
- To toggle the 'checked' class on a list item (correct)
- To remove a list item from the list
What is the purpose of the newElement() function?
What is the purpose of the newElement() function?
What is the condition for the alert message to be displayed?
What is the condition for the alert message to be displayed?
What is the purpose of the getElementsByClassName("close") method?
What is the purpose of the getElementsByClassName("close") method?
What happens when the 'Add' button is clicked?
What happens when the 'Add' button is clicked?
What is the purpose of the appendChild() method in the code?
What is the purpose of the appendChild() method in the code?
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Study Notes
Creating and Managing List Items
- The code creates a "close" button and appends it to each list item using
document.getElementsByTagName("LI")and aforloop. - The close button is a
<span>element with a class of "close" and a Unicode character\u00D7as its text content. - Clicking on the close button hides the current list item by setting its parent element's
displayproperty to"none".
Toggling List Items
- The code adds a "checked" symbol when clicking on a list item using an event listener on the
</span><ul><li>element. - The event listener toggles the
"checked"class on the list item when it is clicked.
Creating New List Items
- The
newElement()function creates a new list item when the "Add" button is clicked. - The function creates a new
</li><li>element and appends it to the<ul><li>element with an ID of"myUL". - The text content of the new list item is taken from the input field with an ID of
"myInput". - The function also appends a close button to the new list item.
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