单项选择题
A.obj obj
B.obj global
C.global global
D.global obj
单项选择题 function superFn(){ var x=0; return function(){ x++; console.log(x); } } var s1=superFn(); var s2=superFn(); s1(); s1(); s1(); s2();以上代码打印结果是? ()
单项选择题 <ul id="list"> <li>html</li> <li>css</li></ul>var node = document.createElement("li");node.innerHTML = "<b>js</b>";document.getElementById("list").appendChild(node);执行以上语句后,DOM结构为()
单项选择题 var fn = function (f){ alert(typeof f); var f = 2; function f(){} alert(typeof f);}fn(1);正确的弹出结果( )