Selecting dropdown in WebDriverJs

Question

I have a dropdown box that I would like to select a value using WebDriverJS. I\'ve looked at the user guide below and could not find out how to do it

Answer 1

I shared a function to select a drop down item by it's text here.

The code:

function selectOption(selector, item){
    var selectList, desiredOption;

    selectList = this.findElement(selector);
    selectList.click();

    selectList.findElements(protractor.By.tagName('option'))
        .then(function findMatchingOption(options){
            options.some(function(option){
                option.getText().then(function doesOptionMatch(text){
                    if (item === text){
                        desiredOption = option;
                        return true;
                    }
                });
            });
        })
        .then(function clickOption(){
            if (desiredOption){
                desiredOption.click();
            }
        });
}

use with:

driver.selectOption = selectOption.bind(driver);
driver.selectOption(webdriver.By.id('my-dropdown'), 'My Value');