I'm trying do do something like this:
var items = $("main a").unique();
var links = [];
items.each(function (index, value)
{
links.push({
href: this.href,
text: this.text
});
});
the idea is to find all links on page and remove duplicates, producing an object with href/text pairs. But the above does not work, I'm getting "TypeError: $(...).unique is not a function"
You are calling $.unique() incorrectly. It is not a method of the jQuery object, it is an actual function. You really want:
$.uniqueSort($("main a"))
Also, learn to use .map() instead of pushing arrays:
var links = $.uniqueSort($("main a")).map(function(idx, e) {
return {href: e.href, text: e.text}
})
(Note: this .map() is the jQuery version, where the first argument to the callback is the array/object's index instead of the array element, because $.uniqueSort() applied to a jQuery object returns a jQuery object not a native JavaScript array).
The correct syntax for unique in jQuery is :
$.uniqueSort()
$.unique() is deprecated as of jQuery 3.0
