我有这样的代码在这里: var infiltrationResult;
while(thisOption) {
var trNode = document.createElement('tr');
var tdNode = document.createElement('td');
var hrefNode = document.createElement('a'
说我有下面的代码: function One() {}
One.prototype.x = undefined;
function Two() {}
var o = new One();
var t = new Two();
o.x和t.x都将计算为undefined。 o.hasOwnProperty('x')和t.hasOwnProperty('x')都会返回false; pr