当（ ）则条件expression1&&expression2的计算结果为true
A: expression1为ture并且expression2为false
B: expression1为false并且expression2为true
C: expression1和expression2为true
D: expression1和expression2为false
A: expression1为ture并且expression2为false
B: expression1为false并且expression2为true
C: expression1和expression2为true
D: expression1和expression2为false
举一反三
- The for(expression1;expression2;expression3) statement, any or all of the three expression can be omitted.
- Micro expression lasts about 1 second. A: true B: false
- for (expression 1;; expression 3) can be understood as()
- Expression ~(9==1) is equal to the value of expression ~9==1.
- 在javascript中，下列哪段代码能够在1秒之后执行表达式？（ ） A: setTimeout(1000，expression) B: setTimeout(expression，1) C: setTimeout(1，expression) D: setTimeout(expression，1000)