Here’s the Deal

WD.js vs webdriver-sync

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When comparing WD.js vs webdriver-sync, the Slant community recommends webdriver-sync for most people. In the question“What are the best Node.JS Selenium WebDriver client libraries / bindings?” webdriver-sync is ranked 3rd while WD.js is ranked 8th. The most important reason people chose webdriver-sync is:

### webdriver-sync avoids this browser.get("http://foo.html", function() { browser.title(function(err, title) { assert.ok(~title.indexOf('foo title'), 'Wrong title!'); browser.elementById('i am a link', function(err, el) { browser.clickElement(el, function() { browser.eval("window.location.href", function(err, href) { assert.ok(~href.indexOf('foo title 2')); browser.quit(); }); }); }); }); }); ### in favor of this - completely synchronous API! No promises or callbacks needed: driver.get("http://foo.html"); title = driver.getTitle(); link = driver.findElement(By.id('i am a link')); link.click(); assert(driver.getCurrentUrl().indexOf('foo title 2') > -1); title.should.equal('foo title'); console.log(title); driver.quit();

Ranked in these QuestionsQuestion Ranking

Common Questions

What are the best Node.JS Selenium WebDriver client libraries / bindings?

WD.js

webdriver-sync

Pros

Pro
Cleaner and more concise code than WebdriverJS

There is no need to pass the 'driver' instance around, and not as many parentheses.

Using WD.js

function login(username, password) {
    return this
        .waitForElementByCss('.loginForm', asserters.isDisplayed, seconds(explicit_wait))
        .elementById('emailAddress').sendKeys(username)
        .elementById('password').sendKeys(password)
        .elementById('signInButton').click()
}

Using WebDriverJS

function login(driver, username, password) {
    driver.wait(until.elementIsVisible(driver.findElement({css: '.loginForm'})),    seconds(explicit_wait));
    driver.findElement({id: 'emailAddress'}).sendKeys(username);
    driver.findElement({id: 'password'}).sendKeys(password);
    driver.findElement({id: 'signInButton'}).click();
}

Pro
Synchronous. No promises or callbacks needed.

webdriver-sync avoids this

browser.get("http://foo.html", function() {
   browser.title(function(err, title) {
     assert.ok(~title.indexOf('foo title'), 'Wrong title!');
     browser.elementById('i am a link', function(err, el) {
        browser.clickElement(el, function() {
           browser.eval("window.location.href", function(err, href) {
           assert.ok(~href.indexOf('foo title 2'));
           browser.quit();
           });
        });
     });
   });
});

in favor of this - completely synchronous API! No promises or callbacks needed:

driver.get("http://foo.html");
title = driver.getTitle();
link  = driver.findElement(By.id('i am a link'));
link.click();
assert(driver.getCurrentUrl().indexOf('foo title 2') > -1);
title.should.equal('foo title');
console.log(title);
driver.quit();