javascript - 如何处理 Protractor 中未找到元素的异常

Question

就像 Selenium webdriver 为 Java 提供各种异常处理一样，我们有什么方法可以使用 Protractor 实现同样的功能。

如果我们想处理元素未找到异常，那么使用 Protractor 的最佳方法是什么？

Answer 1

这个问题的答案is now in Protractor's FAQ

如何捕获 ElementNotFound 等错误？

WebDriver throws errors when commands cannot be completed - e.g. not being able to click on an element which is obscured by another element. If you need to retry these actions, try using webdriverjs-retry. If you would just like to catch the error, do so like this

适应你的问题:

elm.isPresent().then(function(present) {
  /* no webdriver js errors here */}
  if (present) {
    /* element exists */
  } else {
    /* element doesn't exist */
  }
, function(err) {
  /* error handling here, i.e. element doesn't if got ElementNotFound
     but, eventually and less likely, other issues will fall in here too like
     NoSuchWindowsError or ElementStaleError etc...
  */
});