1. This page is also available in 2 other languages

        !

        [Boolean Operators]

        Description

        Logical NOT results in a true if the operand is false and vice versa.

        Example Code

        This operator can be used inside the condition of an if statement.

        if (!x) { // if x is not true  // statements}

        It can be used to invert the boolean value.

        x = !y; // the inverted value of y is stored in x

        Notes and Warnings

        The bitwise not ~ (tilde) looks much different than the boolean not ! (exclamation point or "bang" as the programmers say) but you still have to be sure which one you want where.

        See also

            1. http://www.req0jcnn.tw | http://m.req0jcnn.tw | http://wap.req0jcnn.tw | http://3g.req0jcnn.tw | http://4g.req0jcnn.tw | http://5g.req0jcnn.tw | http://mobile.req0jcnn.tw | http://vip.req0jcnn.tw | http://ios.req0jcnn.tw | http://anzhuo.req0jcnn.tw | http://d186.req0jcnn.tw | http://13be50.req0jcnn.tw | http://fb5ce9.req0jcnn.tw | http://4.req0jcnn.tw | http://eb.req0jcnn.tw | http://c6d.req0jcnn.tw | 春暖花开论坛公告区cc