Learning JavaScript

Questions

1. You access the text color of an element in JavaScript using obj.style.color, but no value is returned. You know it’s been set in a stylesheet. Why is there no returned value, and how would you change the application to get a value?

2. Given text in a DIV block, how would you change it to display in a 14pt font, with a red color and a line height of 16pt?

3. If the above change didn’t work, what could be causing the effect to fail?

4. What are two ways to cause a block to disappear?

5. If drag and drop isn’t an effective shopping-cart technique, what DHTML effect would be handy for this type of service?

Answers are provided in the appendix.