How to compare cells in JavaScript table to each other and test for equality? How does indexOf work?

Question

I created a table in my HTML code. It has 9 columns and 13 rows. It gets filled up completely by a JavaScript loop that fills it with names of people from a few arrays. Howe

Answer 1

You can use the table rows and cells collections for the iteration. The following does a literal comparison of the text content, you may wish to process the text first to "normalise" it in regard to whitespace.

 
foo
bar
fum
 
fum
bar
foo
 
foo
fum
fum

Note that repeated text in a row will be reported twice.

The above uses the textContent property, which may be supported as innerText in some user agents. It also runs about 10 times faster than the jQuery alternative.