我正在尝试创建一个新列表并将其添加到DOM,然后将列表项添加到新列表以及每个列表项的文本节点。 这是我到目前为止,尝试了几种方法,但仍然没有完成目标。感谢任何帮助。前4行代码是HTML代码段,下面的代码是JavaScript代码。再次感谢您对此的任何帮助。
<body>
<div id="nav"></div>
<script src="js/script.js"></script>
</body>
var newList = document.createElement("ul");
var newListItem = document.createElement("li");
var stringArray = ["Home","About","Our Services","Contact Us"];
var newUL = document.getElementById("nav").appendChild(newList);
function buildList(){
for( var i = 0; i < stringArray.length; i++){
newUL.appendChild(newListItem);
}
var listItems = document.getElementsByTagName("li");
for( var i = 0; i < listItems.length; i++){
listItems[i].appendChild(stringArray[i]);
}
}
buildList();
答案 0 :(得分:1)
两个问题:
li
。您需要为每个项目创建一个新项目。textContent
:
var stringArray = ["Home","About","Our Services","Contact Us"];
function buildList(){
var newList = document.createElement("ul");
var newListItem;
document.getElementById("nav").appendChild(newList);
for( var i = 0; i < stringArray.length; i++){
newListItem = document.createElement('li');
newListItem.textContent = stringArray[i];
newList.appendChild(newListItem);
}
}
buildList();
<div id="nav"></div>
使用.forEach()
稍微清洁的版本:
var stringArray = ["Home","About","Our Services","Contact Us"];
function buildList(){
var newList = document.createElement("ul");
document.getElementById("nav").appendChild(newList);
stringArray.forEach(function (title) {
var newListItem = document.createElement('li');
newListItem.textContent = title;
newList.appendChild(newListItem);
});
}
buildList();
<div id="nav"></div>
答案 1 :(得分:0)
您需要创建一个文本节点并将其附加到<li>
元素。
var newList = document.createElement("ul");
var stringArray = ["Home","About","Our Services","Contact Us"];
// Create a <ul> element
var newUL = document.getElementById("nav").appendChild(newList);
function buildList(){
for(var i = 0; i < stringArray.length; i++){
// Create a text node
var newTextNode = document.createTextNode(stringArray[i]);
// Create a list element
var newListItem = document.createElement("li");
// Append text node and list item
newListItem.appendChild(newTextNode);
newUL.appendChild(newListItem);
}
}
buildList();
<body>
<div id="nav"></div>
</body>
答案 2 :(得分:0)
只需遍历字符串数组并添加li
s,如下所示:
var nav = document.querySelector("nav");
var list = document.createElement("ul");
var items = ["Home","About","Our Services","Contact Us"];
items.forEach(function(item) {
var li = document.createElement("li");
li.innerText = item;
list.appendChild(li);
})
nav.appendChild(list);
如果它应该是网站导航,您可能想要添加链接。这也很简单 - 只需将<a>
添加到循环中,就像这样:
var nav = document.querySelector("nav");
var list = document.createElement("ul");
var items = [{
text: "Home",
url: "/home"
}, {
text: "About",
url: "/about"
}, {
text: "Our services",
url: "/services"
}, {
text: "Contact Us",
url: "/contact"
}]
items.forEach(function(item) {
var li = document.createElement("li");
var link = document.createElement("a");
link.innerText = item.text;
link.href = item.url;
li.appendChild(link);
list.appendChild(li);
})
nav.appendChild(list);
答案 3 :(得分:0)
在这种情况下,我认为使用innerHTML
和Array#join
比其他替代方案更简单,更易读:
var stringArray = ["Home", "About", "Our Services", "Contact Us"];
function buildList() {
document.getElementById('nav').innerHTML = '<ul><li>' + stringArray.join('</li><li>') + '</li></ul>'
}
buildList()
&#13;
<nav id="nav"></nav>
&#13;