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填空题 请阅读下面代码,并填空:var tmp1 = 0, tmp2 = 1, tmp3 = 20, tmp4 = 30;var be = (tmp3 || tmp1++) && (tmp2--&&tmp4++);console.log('be = '+be);console.log('tmp1 = '+tmp1);console.log('tmp2 = '+tmp2);console.log('tmp3 = '+tmp3);console.log('tmp4 = '+tmp4);输出:be = __tmp1 = __tmp2 = __tmp3 = __tmp4 = __
学科：JavaScript高级技术
时间：2023-06-27 08:14:44
相关题目
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题目1单选题
以下变量命名正确的选项是A. _Good$Luck_B. Good LuckC. Good+LuckD. 1GoodLuck
题目2单选题
下述代码的输出结果是什么:console.log(typeof(100.1)+', '+typeof(NaN)+', '+typeof('10')+', '+typeof(TRUE)+', '+typeof(null))A. number, undefined, string, boolean, objectB. float, string, number, undefined, undefinedC. number, number, string, undefined, objectD. float, number, string, boolean, undefined
题目3单选题
以下哪一选项不是循环结构语句A. if(条件表达式){代码块1}else{代码块1}B. while(条件表达式){代码块1}C. do{代码块}while(条件表达式)D. for (初始化表达式;结束表达式;迭代表达式){代码块}
题目4填空题
下述代码的输出结果是什么:var tmp_var1, tmp_var2 = null;console.log((tmp_var1+3)+", "+(tmp_var2+3)+", "+ (tmp_var1+'好运')+", "+("20"+23));输出结果:__, __, __, __题目5填空题
请将下述空格处值填上:代码段:var num = 2023;var res1 = -- num;var year = 2023;var res2 = year++;console.log("num的值是:"+num);console.log("year的值是:"+year);console.log("res1的值是:"+res1);console.log("res2的值是:"+res2);输出结果:num的值是:_____year的值是:_____res1的值是:_____res2的值是:_____题目6填空题
请阅读下面代码,并填空:var tmp1 = 0, tmp2 = 1, tmp3 = 20, tmp4 = 30;var be = (tmp3 || tmp1++) && (tmp2--&&tmp4++);console.log('be = '+be);console.log('tmp1 = '+tmp1);console.log('tmp2 = '+tmp2);console.log('tmp3 = '+tmp3);console.log('tmp4 = '+tmp4);输出:be = __tmp1 = __tmp2 = __tmp3 = __tmp4 = __题目7判断题
console.log(1024 ==="10"+24)的输出结果为trueA. 正确B. 错误
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