Javascript - get all table -> tr values

Answer 1

var rows = document.getElementsByTagName("table")[0].rows;
var last = rows[rows.length - 1];
var cell = last.cells[0];
var value = cell.innerHTML

Try it yourself here: http://jsfiddle.net/ReyNx/.

Obviously you'll have to change document.getElementsByTagName("table")[0] to appropriately match your table

If you're using jQuery it's easier:

var value = $('table tr:last td').text();

For more info, see the MDN DOM reference, which shows you which properties are available on which elements to traverse the DOM.

Answer 2

Get all the <tr> elements. Loop through each one and compare the innerHTML against a regex that matches email addresses.

var emailAddresses = [];
var cells = document.getElementsByTagName("td");
for (var i = 0; i < cells.length; i++) {
    if (cells[i].innerHTML.match(/yourEmailRegex/g)) {
        emailAddresses[emailAddresses.length] = cells[i].innerHTML;
    }
}

Find the appropriate regular expression here http://www.regular-expressions.info/email.html