JavaScript中的％运算符是什么? [英] What is the % operator in JavaScript?

问题描述

我正在尝试解密一段JS代码(而(显然)我的JS知识为空).
以下代码中的％运算符是什么?

I am trying to decipher a piece of JS code (while (obviously) my JS knowledge is null).
What is the % operator in the code below?

   m[p1%2][q1] = 0.0;  
   for(j=q1+1; j <= q2; j++)
      m[p1%2][j] = m[p1%2][j-1] + 1;

推荐答案

%是

% is remainder operator. It gives the remainder after division. ^{Quoting from MDN}

一个操作数除以第二个操作数时，余数运算符返回剩余的余数.它总是采用除数的符号，而不是除数的符号.它使用内置的模函数来生成结果，该结果是将var1除以var2的整数余数-例如，- var1模var2 .

The remainder operator returns the remainder left over when one operand is divided by a second operand. It always takes the sign of the dividend, not the divisor. It uses a built-in modulo function to produce the result, which is the integer remainder of dividing var1 by var2 — for example — var1 modulo var2.

有人建议在ECMAScript的未来版本中使用实际的模运算符，区别在于模运算符结果将采用除数的符号，而不是除数.

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