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Free Huawei H14-231_V1.0 Exam Questions (page: 31)

Page 31 of 176
PDF with 699 Questions

In the JavaScript UI framework, which layer is used to provide animation parsing, DOM (Document Object Model) tree construction, layout calculation, rendering command construction and drawing, event management, etc.?

  1. Engine Layer
  2. Platform adaptation layer
  3. Front-end frame layer
  4. Application layer

Answer(s): A



Which of the following is the callback behavior of the Page Ability lifecycle that can destroy the page?

  1. Page is no longer visible to the user, and the system will call onBackground() to notify the developer to release the corresponding resources
  2. triggers onStop() to notify the user to release system resources
  3. takes the Page out of focus and calls onInactive().
  4. Trigger onDestroy() to release system resources

Answer(s): B



When the page loses focus, which of the following callback methods will be called by the system to make it enter the INACTIVE state?

  1. onStart
  2. onActive
  3. onBackground
  4. onInactive

Answer(s): D



A developer is developing an online education application, and there are multiple choice questions and multiple choice questions in the student answers interface,
which of the following components is suitable for displaying multipl choice questions?

  1. Picker
  2. Checkbox
  3. RadioButton
  4. Switch

Answer(s): B



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