Check if element exists - selenium / javascript / node-js

Question

I\'m trying to check if an element exists before I can execute this line:

driver.findElement(webdriver.By.id(\'test\'));

This throws an error \"

Answer 1

I know this is a bit late, but this is the code that worked for me.

var assert = require('assert');
var expect = require('chai').expect;
var should = require('chai').should();
var chai = require('chai');
var chaiAsPromised = require('chai-as-promised');

chai.use(chaiAsPromised);
chai.should();

var webdriver = require('selenium-webdriver');
By = webdriver.By;
until = webdriver.until;

describe('checking if an element id exists', function() {

  it.only('element id exists', function () {
    var driver = new webdriver.Builder().forBrowser('chrome').build();
    driver.get('http://localhost:3000');
    this.timeout(6000);

    return driver.wait(until.elementLocated(By.id('idWeWantToTest')), 5 * 1000).then( (e) => {
    }, function(err) {
      throw {
        msg: "element not found"
      }
    }).then( () => {
      driver.quit();
    });     
  });
})