我要写一个四级菜单的导航菜单特效,要使js代码针对id分别为“Menu1”“Menu2”“Menu3”的div层。如下的代码只能针对“Menu1”,如果要针对“Menu2”“Menu3”也有效,就必须复制以下的js代码,并且相应地修改第一行代码document.getElementById("Menu1").getElementsByTagName("TR")中的“Menu1”为“Menu2”“Menu3”,这样代码就多了。我想问的是能不能修改以下代码,只写一段代码就可以批量适用于“Menu1”“Menu2”“Menu3”呢?var Els = document.getElementById("Menu1").getElementsByTagName("TR");
for (var i=0; i<Els.length; i++) {
Els[i].onmouseover = function() {
try {
this.className += " Over"
var Elzs = this.getElementsByTagName("TD");
Elzs[0].className += " OverTd" var Elzs = Elzs[1].getElementsByTagName("table");
Elzs[0].style.display = "block";
} catch(Err) {
}
}
Els[i].onmouseout = function() {
try {
this.className = this.className.replace(/ *Over/, "");
var Elzs = this.getElementsByTagName("td");
Elzs[0].className = this.className.replace(/ *OverTd/, "");
var Elzs = Elzs[1].getElementsByTagName("table");
Elzs[0].style.display = "none";
} catch(Err) {
}
}
}
for (var i=0; i<Els.length; i++) {
Els[i].onmouseover = function() {
try {
this.className += " Over"
var Elzs = this.getElementsByTagName("TD");
Elzs[0].className += " OverTd" var Elzs = Elzs[1].getElementsByTagName("table");
Elzs[0].style.display = "block";
} catch(Err) {
}
}
Els[i].onmouseout = function() {
try {
this.className = this.className.replace(/ *Over/, "");
var Elzs = this.getElementsByTagName("td");
Elzs[0].className = this.className.replace(/ *OverTd/, "");
var Elzs = Elzs[1].getElementsByTagName("table");
Elzs[0].style.display = "none";
} catch(Err) {
}
}
}
{
var Els = document.getElementById(id).getElementsByTagName("TR");
for (var i=0; i<Els.length; i++) {
Els[i].onmouseover = function() {
try {
this.className += " Over"
var Elzs = this.getElementsByTagName("TD");
Elzs[0].className += " OverTd" var Elzs = Elzs[1].getElementsByTagName("table");
Elzs[0].style.display = "block";
} catch(Err) {
}
}
Els[i].onmouseout = function() {
try {
this.className = this.className.replace(/ *Over/, "");
var Elzs = this.getElementsByTagName("td");
Elzs[0].className = this.className.replace(/ *OverTd/, "");
var Elzs = Elzs[1].getElementsByTagName("table");
Elzs[0].style.display = "none";
} catch(Err) {
}
}
} }