哦哦,我懂了,y代表的是x后面的節(jié)點,為空,所以不能設(shè)置屬性。用老師后面介紹的方法就可以了
2016-07-18
為啥設(shè)置了y.style.display="block"之后,就會出現(xiàn)一個Uncaught TypeError: Cannot set property 'display' of undefined的錯誤?
2016-07-18
function hidediv(obj) {
obj.parentNode.parentNode.style.display = "none";
var x = obj.parentNode.parentNode.previousSibling;
if (x.nodeType != 1) {
x = x.previousSibling;
}
x.style.display = "block";
}
obj.parentNode.parentNode.style.display = "none";
var x = obj.parentNode.parentNode.previousSibling;
if (x.nodeType != 1) {
x = x.previousSibling;
}
x.style.display = "block";
}
2016-07-04
var time = 300;
var h = 40;
function showdiv(obj) {
var x = obj.parentNode.nextSibling;
if (x.nodeType != 1) {
x = x.nextSibling;
}
x.style.display = "block";
obj.parentNode.style.display = "none";
}
var h = 40;
function showdiv(obj) {
var x = obj.parentNode.nextSibling;
if (x.nodeType != 1) {
x = x.nextSibling;
}
x.style.display = "block";
obj.parentNode.style.display = "none";
}
2016-07-04