代码如下: [removed] function doTest(s) { [removed]ln(s + ” : ” + eval(s) + “”); } doTest(“null==undefined”); //1: doTest(‘null==””‘); //2: doTest(‘null==0’); //3: doTest(‘0==””‘); //4: doTest(‘false==0’); //5: doTest(‘false==””‘); //6: doTest(‘true==0’); //7: doTest(‘tru