Consider the following image definition:

<img id="logo" src="companylogo1.gif" height="12" width="12" >

Which of the following will change the image to "companylogo2.gif" when the page loads?

Which will detect which DOM element has the focus?

Which will detect if the browser supports a certain CSS property?

Correct way to resize an iframe based on content?

Which is not a correct way to empty the array a?

Which is the most secure and efficient way of declaring an array?

What's the output?

Which is correct values of variable, and why? VariableA = [6,8]; VariableB = [7,9]; variableC = variable + variable;

Performance-wise, which is the fastest way of repeating a string in JavaScript?

What is the error in the statement: var charConvert = toCharCODE('X');?

Which is the most secure and efficient way of declaring an array?