JavaScript...Cannot call method match of undefined
javascript
Solution
`NodeLists` have `length`, `item` and `namedItem` properties.
Use `for (var i = 0; i < foo.length; i++)` not `for i in foo` to iterate over them and only hit the nodes.
Problem
I'm getting this error: `Uncaught TypeError: Cannot call method 'match' of undefined` in my JavaScript. I'm trying to write this without jQuery since it'll be the only js on the site. My code is supposed to add a class, "active", to the `<a href="...>` in the navigation that links to the current page. I'm guessing it might be the `contentLoaded` function?....source Here's my code...(error occurs on line 9)...fiddle ``` (function(window, document, undefined) { contentLoaded(window, function() { var page = document.location.pathname.match(/[A-z]+$/)[0], nav_anchors = document.getElementsByTagName('header')[0] .getElementsByTagName('nav')[0] .getElementsByTagName('a'); for(i in nav_anchors) if(nav_anchors[i].href.match(/[A-z]+$/)[0] = page) //LINE 9 <-- Error nav_anchors[i].classList.add('active'); }) })(this, this.document) ``` Thanks!