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JavaScript Interactive Web Pages with JavaScript Traversing and Manipulating the DOM with JavaScript Perform: Traversing Elements with querySelector

William Titterton
William Titterton
10,960 Points
Posted by William Titterton
William Titterton
10,960 Points

list items are not binding to onchange event

function bindTaskEvents(taskListItem, checkBoxEventHandler) { //cycle over incompleteTaskholeder ul list items console.log("bind list item events");

var checkBox = taskListItem.querySelector("input[type=checkbox]"); var editButton = taskListItem.querySelector("button.edit"); var deleteButton = taskListItem.querySelector("button.delete"); editButton.onclick = editTask; deleteButton.onclick = deleteTask; checkBox.onchange = checkBoxEventHandler;

//for each list item select children //bind editTask to edit button // bind to deleteButton //bind eventBoxEventHandler to checkbox

}

for (var i = 0; i < incompleteTasksHolder.children.length; i++) { bindTaskEvents(incompleteTasksHolder.children[i], complete);

}

for (var i = 0; i < completedTasksHolder.children.length; i++) {

bindTaskEvents(completedTasksHolder.children[i], incomplete);

}

1 Answer

Raymond Osier
Raymond Osier
16,581 Points
Raymond Osier
Raymond Osier
16,581 Points

I had the same issue what i did to fix it was change (taskListItem) as shown in the instruction to taskList Items like this ..I Hope this helps if you have anymore questions i can try to help var bindTaskEvents = function(taskListItems, checkBoxEventHandler){ console.log("bind list items"); //selelct its children var checkbox = taskListItems.querySelector("input[type=checkbox]"); var editButton = taskListItems.querySelector("button.edit"); var deletebutton = taskListItems.querySelector("button.delete"); // bind the edit task to edit button editButton.onclick = editTask; // bind the delet task to the delete button deletebutton.onclick = deleteTask; // bind checkBoxEventHandler to the check box checkbox.onchange = checkBoxEventHandler;