lib/commands/element.js
function (selector, hash) {
    this.actionQueue.push(this.webdriverClient.element.bind(this.webdriverClient, selector));
    this.actionQueue.push(this._existsCb.bind(this, selector, hash));
    return this;
  }
function (selector, hash) {
    this.actionQueue.push(this.webdriverClient.element.bind(this.webdriverClient, selector));
    this.actionQueue.push(this._existsCb.bind(this, selector, hash));
    return this;
  }
function ( selector , hash ) { this . actionQueue . push ( this . webdriverClient . element . bind ( this . webdriverClient , selector ) ) ; this . actionQueue . push ( this . _existsCb . bind ( this , selector , hash ) ) ; return this ; }
Checks if an element exists

@method exists
@param {string} selector Selector expression to find the element
@param {string} hash Unique hash of that fn call
@chainable
Checks if an element exists