13 lines
229 B
Markdown
13 lines
229 B
Markdown
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---
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title: Decrement a Number with JavaScript
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localeTitle: 使用JavaScript减少数字
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---
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## 使用JavaScript减少数字
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使用' - '运算符减少数字：
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```
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var a = 5;
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a--; // Now, 'a' is 4
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--a; // Now, 'a' is 3
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```
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