CODEWITHSUNDEEP
javascriptseleniumselenium-webdriver
morty
morty

Reputation: 154

How to get number of child nodes in Selenium JS

I'm web scraping a web site for a small project of mine and I want to get the number of faculty names.
The names are in the <tr> tags under the <tbody> tag.
I want to push the faculty names in to a list and right now I'm doing it with a hardcoded number of faculties that are currently on the site. That's ok for now, but the number might change and I want my code to work if they add more faculties.

var listOfFaculties = [];
for(var i = 2; i <= 18; i++){ // start with inedx 2 and go to 18 (from the first to the last faculty on the site) -- HARDCODED
    await driver.findElement(By.xpath(getXPath(i))).getText().then(function(value) {
        listOfFaculties.push({
            Faculty: value
        });
    });
}
function getXPath(num){
    return "//div[@id = 'main']/center[2]/font[@class='normal']/table/tbody/tr[" + num + "]/td[1]";
}

Is there a method to get the number of child nodes of <tbody> tag? So I can put the number in to the for loop without hardcoding the bounds.

Upvotes: 0

Views: 256

Answers (1)

Ali Azam
Ali Azam

Reputation: 2115

Use List of WebElement to get the faculty length.

Your revised code should be like - 

List<WebElement> elements = driver.findElements(By.xpath("//div[@id = 'main']/center[2]/font[@class='normal']/table/tbody/tr"));

var listOfFaculties = [];
for(var i = 2; i < elements.size(); i++){ 
    await driver.findElement(By.xpath(getXPath(i))).getText().then(function(value) {
        listOfFaculties.push({
            Faculty: value
        });
    });
}

function getXPath(num){
    return "//div[@id = 'main']/center[2]/font[@class='normal']/table/tbody/tr[" + num + "]/td[1]";
}

Upvotes: 1

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