在Javascript中创建节点
我正在学习Javascript,我想了解一些东西。 我尝试使用Javascript构建HTML节点,我的代码在拆分指令时有效,但在尝试压缩时无效: 我有一个带有文本的选项卡:在Javascript中创建节点,javascript,html,nodes,Javascript,Html,Nodes,我正在学习Javascript,我想了解一些东西。 我尝试使用Javascript构建HTML节点,我的代码在拆分指令时有效,但在尝试压缩时无效: 我有一个带有文本的选项卡: var tabText = [ 'The ', 'Moon', ]; 此代码适用于: var s1 = document.createElement('strong'); s1.appendChild(document.createTextNode(tabText[1])); div.appendChil
var tabText = [
'The ',
'Moon',
];
此代码适用于:
var s1 = document.createElement('strong');
s1.appendChild(document.createTextNode(tabText[1]));
div.appendChild(s1);
但这一条没有:
div.appendChild(document.createElement('strong').appendChild(document.createTextNode(tabText[1]))代码>
你能给我解释一下吗
谢谢
document.createElement('strong').appendChild(document.createTextNode(tabTexte[1]))
node.appendChild返回附加的子节点,因此上面的代码将返回textNode(which随后被附加到div,which使强元素无处可去)
您可能需要:
div.appendChild(document.createElement('strong')).appendChild(document.createTextNode(tabText[1]));
结果是子对象,而不是父对象。换句话说,您的代码相当于
var strongNode = document.createElement('strong');
var textNode = document.createTextNode(tabText[1]));
strongNode.appendChild(textNode); // returns textNode
div.appendChild(textNode);
因此,strong节点
将不会添加到文档中。//创建节点
(function () {
function createTodoNode(todo) {
const node = document.createElement("li");
node.classList.add("todo-item");
node.innerHTML = `
<button class="done-state">
<div class="done-state-filler"></div>
</button>
<div class="todo-name"></div>
<button class="delete-todo">✖</button>
`;
node.querySelector(".todo-name").textContent = todo.value;
const doneButton = node.querySelector("button.done-state");
const deleteButton = node.querySelector("button.delete-todo");
node.setAttribute("data-completed", todo.isComplete);
doneButton.addEventListener("click", () => {
const currentlyCompleted = JSON.parse(
node.getAttribute("data-completed") || "false"
);
node.setAttribute("data-completed", !currentlyCompleted);
todo.isComplete = !currentlyCompleted;
todoService.updateTodo(todo);
});
deleteButton.addEventListener("click", () => {
node.parentNode.removeChild(node);
todoService.removeTodo(todo.id);
});
return node;
}
window.todoView = {
createTodoNode,
};
})();
(函数(){
函数createTodoNode(todo){
const节点=document.createElement(“li”);
node.classList.add(“待办事项”);
node.innerHTML=`
✖
`;
node.querySelector(“.todo name”).textContent=todo.value;
const doneButton=node.querySelector(“button.done状态”);
const deleteButton=node.querySelector(“button.delete todo”);
node.setAttribute(“数据已完成”,todo.isComplete);
doneButton.addEventListener(“单击”,()=>{
const currentlyCompleted=JSON.parse(
node.getAttribute(“数据已完成”)| |“false”
);
node.setAttribute(“数据已完成”,!currentlyCompleted);
todo.isComplete=!currentlyCompleted;
todoService.updateTodo(todo);
});
deleteButton.addEventListener(“单击”,()=>{
node.parentNode.removeChild(节点);
todoService.removeTodo(todo.id);
});
返回节点;
}
window.todoView={
createTodoNode,
};
})();
//第二种变体
<button onclick="create()">Aufgabe erstellen</button>
<ul class="items">
Meine Aufgabe:
</ul>
function create(){
let list = document.querySelector(".items");
let node = document.createElement("li");
node.classList.add("todo-item");
node.style ="color: orangered";
node.innerHTML = '<div class= "todo-item"></div>';
list.appendChild(node);
node.querySelector(".todo-item").textContent = "Eine erste Aufgabe";
console.log(node);
}
(function() {
function createTaskNode(param) {
let categorie = document.querySelector("#" + param.key);
let newTaskDiv = document.createElement("div");
newTaskDiv.classList.add("task");
newTaskDiv.setAttribute("id", param.id);
newTaskDiv.setAttribute("data-assigned", param.isComplete);
if (newTaskDiv.getAttribute("data-assigned") == "undefined") {
newTaskDiv.setAttribute("data-assigned", false);
}
newTaskDiv.innerHTML = `
<div class="task-name">
<div class="task-value"></div>
<div class="data-assigned-button"></div>
</div>
<div class="button-div">
<button class="prev-button">⬅</button>
<button class="delete-button">âŒ</button>
<button class="next-button">âž¡</button>
</div>`;
newTaskDiv.setAttribute("task-value", param.value);
categorie.appendChild(newTaskDiv);
}
window.taskViewService = {
createTaskNode
};
})();
Aufgabe-erstellen
梅恩·奥法加贝:
函数create(){
let list=document.querySelector(“.items”);
让节点=document.createElement(“li”);
node.classList.add(“待办事项”);
node.style=“颜色:橙色”;
node.innerHTML='';
list.appendChild(节点);
node.querySelector(“.todo项”).textContent=“Eine erste Aufgabe”;
console.log(节点);
}
//第三种变体
<button onclick="create()">Aufgabe erstellen</button>
<ul class="items">
Meine Aufgabe:
</ul>
function create(){
let list = document.querySelector(".items");
let node = document.createElement("li");
node.classList.add("todo-item");
node.style ="color: orangered";
node.innerHTML = '<div class= "todo-item"></div>';
list.appendChild(node);
node.querySelector(".todo-item").textContent = "Eine erste Aufgabe";
console.log(node);
}
(function() {
function createTaskNode(param) {
let categorie = document.querySelector("#" + param.key);
let newTaskDiv = document.createElement("div");
newTaskDiv.classList.add("task");
newTaskDiv.setAttribute("id", param.id);
newTaskDiv.setAttribute("data-assigned", param.isComplete);
if (newTaskDiv.getAttribute("data-assigned") == "undefined") {
newTaskDiv.setAttribute("data-assigned", false);
}
newTaskDiv.innerHTML = `
<div class="task-name">
<div class="task-value"></div>
<div class="data-assigned-button"></div>
</div>
<div class="button-div">
<button class="prev-button">⬅</button>
<button class="delete-button">âŒ</button>
<button class="next-button">âž¡</button>
</div>`;
newTaskDiv.setAttribute("task-value", param.value);
categorie.appendChild(newTaskDiv);
}
window.taskViewService = {
createTaskNode
};
})();
(函数(){
函数createTaskNode(参数){
让categorie=document.querySelector(“#”+param.key);
让newTaskDiv=document.createElement(“div”);
newTaskDiv.classList.add(“任务”);
newTaskDiv.setAttribute(“id”,参数id);
newTaskDiv.setAttribute(“分配的数据”,参数isComplete);
if(newTaskDiv.getAttribute(“分配的数据”)=“未定义”){
newTaskDiv.setAttribute(“数据分配”,false);
}
newTaskDiv.innerHTML=`
⬅
âŒ
âž¡
`;
newTaskDiv.setAttribute(“任务值”,参数值);
附属物儿童(newTaskDiv);
}
window.taskViewService={
createTaskNode
};
})();
你有一个打字错误顺便说一句:tabTexte
一个打字错误?这是什么意思?我的标签名为“tabText”。您有一个输入错误:您最初发布的代码是tabTexte[1]
您说得对,我修改了名称。