Selenium IDE user extension example 3

Selenium.prototype.doTypeRandomEmail = function(locator) {
    /**
    * Sets the value of an input field to a random email id,
    * as though you typed it in.
    *
    * @param locator an <a href="#locators">element locator</a>
    */

    // All locator-strategies are automatically handled by "findElement"
    var element = this.page().findElement(locator);

    /* The following block generates a random email string */
    var allowedChars = "abcdefghiklmnopqrstuvwxyz";
    var stringLength = 8;
    var randomstring = '';

    for (var i=0; i<stringLength; i++) {
        var rnum = Math.floor(Math.random() * allowedChars.length);
        randomstring += allowedChars.substring(rnum,rnum+1);
    }

    // Append a domain name
    randomstring += "@somedomain.com"

    // Replace the element text with the new text
    this.browserbot.replaceText(element, randomstring);
};