Vim Configuration tern-for-vim Not Effective?

  question, vim

At ordinary times, I write more js and install youcomplete according to the online statement, but it is not very good for the native js automatic completion. when I see the online statement, I can complete vim automatic completion very well by using terrn-for-vim configuration. However, it will not take effect after installation. The specific configuration is as follows:

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This is my vim configuration, in which these two lines are tern_for_vim, and these two lines are correct, so there should be no problem.