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Vip4.0W
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11.ts
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初始
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demo.js

demo.js 74 B
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1234 
  1. let a = 1;
    2. 

  2. // a Number
    3. 

  3. // js 数据 决定 类型 弱语言类型
    4. 

  4. a = '12'
    5.