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

Posted by Jacob Tennyson
Jacob Tennyson
6,240 Points

Error in JS

Uncaught ReferenceError: Invalid left-hand side expression in postfix operation 

//cycle ove rincompleteTaskHolder ul list items 
for(var index = 0; index < incompleteTasksHolder.children.length; 1++)
{
    //bind events to list items children (taskCompleted)
  bindTaskEvents(incompleteTasksHolder.children[i], taskCompleted);
}

Suggestions?

Roberto Alicata
Roberto Alicata
Courses Plus Student 39,959 Points

you wrote 1++ in the FOR loop instead of index++ and you used the variable i inside the loop but you must use index

Sally Gradle
Sally Gradle
24,694 Points

Roberto has got it. Try i++ instead of 1++.

1 Answer

Chad Dugas
PLUS
Chad Dugas
Courses Plus Student 13,304 Points
Chad Dugas
Chad Dugas
Courses Plus Student 13,304 Points

You also cant use .children[i] if you are going to call your variable index. You have to put .children[index].