freeCodeCamp/guide/chinese/certifications/javascript-algorithms-and-data-structures/basic-javascript/increment-a-number-with-javascript/index.md

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Increment a Number with JavaScript	使用JavaScript增加数字

使用JavaScript增加数字

您可以使用'++'增量运算符轻松地将（添加一个）增加到数字变量。例如：

var a = 6; 
 a++; // Now, 'a' is equal to 7 -- post-fixing 
 ++a; // Now, 'a' is equal to 8 -- pre-fixing