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js determines whether a method exists instance code_javascript skills

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Release： 2016-05-16 16:21:12
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The example in this article describes the js code to determine whether a certain method exists. Share it with everyone for your reference.

The specific code is as follows:

Copy code The code is as follows:


js determines whether a certain method exists





I hope this article will be helpful to everyone’s JavaScript programming design.

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js judgment exist method
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