问Selenium ChromeDriver:获得锚固元素值的增加时间

EN

var parent = arguments[0];
// ^ JavaScript is executed as a function call.
//   We need to get the parent element passed as an argument.

Array.from(parent.getElementsByTagName('a'))
//         ^ Get all the "a" tags in the parent
// ^ and convert the HTMLCollection to an Array so we can use reduce
.reduce(
// ^ Reduce will call the following callback on each element with an "accumulated" value (your result) and the current element of the array. The first value of the accumulator is the initial value we provide as the second argument
  (acc, anchor) => {
    if (anchor.classList.contains("a")) {
    //        ^ The classList.contains method will check if the anchor has the class "a" applied.
      acc.push("A");
      // ^ Add "A" to the accumulator
    }
    if (anchor.classList.contains("b")) { acc.push("B"); }
    if (anchor.classList.contains("c")) { acc.push("C"); }
    return acc;
    // ^ Return the accumulated value for the next iteration
  },
  [],
  // ^ Initial value of the accumulator
);

Array.from(arguments[0].getElementsByTagName('a'))
  .reduce((acc, { classList }) => {
    classList.contains("a") && acc.push("A");
    classList.contains("b") && acc.push("B");
    classList.contains("c") && acc.push("C");
    return acc;
  }, []);

public ArrayList<?> func(WebElement element)
{
    final String JS_TRANSFORM_ANCHOR_CLASSES_TO_VALUES = 
        "return Array.from(arguments[0].getElementsByTagName('a'))\n" +
        "  .reduce((acc, { classList }) => {\n"
        "    classList.contains(\"a\") && acc.push(\"A\");\n"
        "    classList.contains(\"b\") && acc.push(\"B\");\n"
        "    classList.contains(\"c\") && acc.push(\"C\");\n"
        "    return acc;\n"
        "  }, []);\n"

    WebDriver driver = ((RemoteWebElement)table).getWrappedDriver();
    Object result = ((JavascriptExecutor)driver).executeScript(JS_TRANSFORM_ANCHOR_CLASSES_TO_VALUES, element);
    return (ArrayList<?>)result;
}