# Javascript常用运算符(Operators) - 算术运算符

**URL:** <https://www.isharkfly.com/t/javascript-operators/8811>\
**Category:** 前端\
**Created:** [November 2, 2012, 1:33pm UTC](https://www.isharkfly.com/t/javascript-operators/8811 "2012-11-02T13:33:35Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![honeymoose](https://www.isharkfly.com/user_avatar/www.isharkfly.com/honeymoose/32/20796_2.png) [@honeymoose](https://www.isharkfly.com/u/honeymoose)\
**Post date:** [November 2, 2012, 1:33pm UTC](https://www.isharkfly.com/t/javascript-operators/8811/1 "2012-11-02T13:33:35Z")

</div>

[table=98%]  
[tr][td][align=center]运算符[/align][/td][td][align=center]运算符说明[/align][/td][td][align=center]示例[/align][/td][td][align=center]示例说明[/align][/td][/tr]  
[tr][td]+[/td][td]加法[/td][td]x+y[/td][td][p=22, null, left]如果x为整数2,y为整数5, x+y等于7[/p][p=22, null, left]如果x为字符串"text1", y为字符串"fun",[/p][p=22, null, left]x+y则等于"text1fun"[/p][/td][/tr]  
[tr][td]-[/td][td]减法[/td][td]x-y[/td][td] [/td][/tr]  
[tr][td]_[/td][td]乘法[/td][td]x_y[/td][td] [/td][/tr]  
[tr][td]/[/td][td]除法[/td][td]x/y[/td][td] [/td][/tr]  
[tr][td]%[/td][td]两者相除求余数[/td][td]x%y[/td][td]如果x等于10, y等于3, x%y结果等于1[/td][/tr]  
[tr][td]++[/td][td]递增[/td][td]x++[/td][td]如果x等于10, x++等于11[/td][/tr]  
[tr][td]–[/td][td]递减[/td][td]y–[/td][td]如果y等于10, y–等于9[/td][/tr]  
[/table]