我有一个contenteditable div,附加了一个keyup事件。用户键入时,在该div中创建了许多p
个标记。
$(".pad").keyup(function(e) {
doSomething();
});
那是keyup
事件。
我怎样才能确定用户在可信任的div中编辑/创建的元素?
我尝试过以下操作,但它似乎无法正常工作:
$(".pad p").keyup(function(e) {
doSomething();
});
目标是拥有这样的东西:
$(".pad").keyup(function(e) {
theEditedElement = ...;
$(theEditedElement).css("color","red");
$(theEditedElement).(...);
});
我们从:
开始<div class="pad" contenteditable="true">
<p>Some text</p>
</div>
然后,用户将其编辑为:
<div class="pad" contenteditable="true">
<p>Some text</p>
<p>Some more text</p>
<p>Even <b>more</b> text</p>
</div>
如果用户决定修改<p>Some more text</p>
,则应检索该特定<p>
元素。
答案 0 :(得分:1)
如果您希望您的活动目标是div
的内容可编辑而不是div
本身的子项,则您需要将这些子节点设置为contenteditable
。你可以像这样动态地做到这一点。
const contentEl = document.querySelector('.pad');
const paras = contentEl.childNodes;
// here, set contenteditable attribute for all paragraphs inside of that div
for (let i = 0; i < paras.length; i++) {
if (paras[i].nodeType === document.ELEMENT_NODE) {
paras[i].setAttribute('contenteditable', true);
}
}
contentEl.addEventListener('keyup', event => {
// event.target will be the element that you are asking for
const theEditedElement = event.target;
console.log(theEditedElement);
theEditedElement.style.color = 'red';
});
&#13;
<div class="pad">
<p>Some text</p>
<p>Some more text</p>
<p>Even <b>more</b> text</p>
</div>
&#13;
请注意,当在其中创建新的contenteditable
元素时,您可能需要再次运行将div
属性设置为p
个孩子的代码片段div
。
另一种选择是创建变异观察者并让它处理对封闭div
的更改,以防添加任何新段落(让它设置新添加段落的contenteditable
属性)。 / p>
const contentEl = document.querySelector('.pad');
const paras = contentEl.childNodes;
for (let i = 0; i < paras.length; i++) {
if (paras[i].nodeType === document.ELEMENT_NODE) {
paras[i].setAttribute('contenteditable', true);
}
}
contentEl.addEventListener('keyup', event => {
// event.target will be the element that you are asking for
const theEditedElement = event.target;
console.log(theEditedElement);
theEditedElement.style.color = 'red';
});
// this code here is just to demonstrate the change to the enclosing div
const addNewParagraph = () => {
const p = document.createElement('p');
contentEl.appendChild(p);
p.textContent = 'new paragraph';
};
const btn = document.querySelector('button');
btn.addEventListener('click', addNewParagraph);
// create mutation observer
const config = { childList: true };
const callback = function(mutationList) {
for (const mutation of mutationList) {
if (mutation.type === 'childList') {
console.log('new paragraph has been added');
// get the added node and set its contenteditable attribute
mutation.addedNodes[0].setAttribute('contenteditable', true);
}
}
}
const observer = new MutationObserver(callback);
observer.observe(contentEl, config);
&#13;
<button>add new paragraph</button>
<div class="pad">
<p>Some text</p>
<p>Some more text</p>
<p>Even <b>more</b> text</p>
</div>
&#13;