已知定义如下var a = "abcd";var b = "abcd";v...nt.writeln(c === d);
举一反三
- 已知定义如下var a=abcd
- 已知定义如下 var a = "abcd"; var b = "abcd"; var c = new String("abcd"); var d = new String("abcd"); 下列输出是() document.writeln(a == b); document.writeln(a === b); document.writeln(a == c); document.writeln(a === c); document.writeln(c == d); document.writeln(c === d);
- 已知定义如下 var a = "abcd"; var b = "abcd"; var c = new String("abcd"); var d = new String("abcd"); 下列输出是() document.writeln(a == b); document.writeln(a === b); document.writeln(a == c); document.writeln(a === c); document.writeln(c == d); document.writeln(c === d);
- var abcd;alert(eval(abcd))的执行结果是( )。
- 已知定义如下vara=abcd;varb=abcd;varc=newString(abcd);vard=newString(abcd);下列输出是()document.writeln(a==b);document.writeln(a===b);document.writeln(a==c);document.writeln(a===c);document.writeln(c==d);document.writeln(c===d);