Which of the following is incorrect regarding Strict mode in JavaScript?

Which are true regarding the code below?

Consider the following code:

What's the output? contains(a, obj) { for (var i = 0; i < a.length; i++) { if (a[i] === obj) { return true; } } return false; }

Default setting for the expires attribute of the document.cookie property?

Given the following window.open function: window.open(url,name,'attributes') How can it be ensured that different URLs are opened in the same window?

Which are valid JavaScript methods?

Are the following two statements the same? object.property object[''property'']

Which one could you do using JavaScript?

Which is not the part of JavaScript errors handling?

Which are correct about the Prototype Pattern? 1. It always returns non-initialized objects. 2. It is also referred to as the Properties pattern. 3. It is accessible by methods using this keyword.