javascript 在 contentEditable 中将 HTML 转换为纯文本
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Convert HTML to plain text in contentEditable
提问by Alex
I have a contentEditableand I strip the formatting of pasted content on('paste')by catching the event. Then I focus a textarea, paste the content in there, and copy the value. Pretty much the answer from here. The problem is that I can't do this:
我有一个contentEditable，我on('paste')通过捕获事件来去除粘贴内容的格式。然后我聚焦一个 textarea，将内容粘贴在那里，然后复制该值。几乎来自here的答案。问题是我不能这样做：
$("#paste-output").text($("#area").val());
because that would replace my entire content with the pasted text. So I need to paste the content at caret position. I put together a script that does that:
因为这会用粘贴的文本替换我的整个内容。所以我需要将内容粘贴在插入符号位置。我整理了一个脚本来做到这一点：
pasteHtmlAtCaret($("#area").val());
// pastes CTRL+V content at caret position
function pasteHtmlAtCaret(html) {
var sel, range;
if (window.getSelection) {
sel = window.getSelection();
if (sel.getRangeAt && sel.rangeCount) {
range = sel.getRangeAt(0);
range.deleteContents();
var el = document.createElement("div");
el.innerHTML = html;
var frag = document.createDocumentFragment(), node, lastNode;
while ((node = el.firstChild)) {
lastNode = frag.appendChild(node);
}
range.insertNode(frag);
if (lastNode) {
range = range.cloneRange();
range.setStartAfter(lastNode);
range.collapse(true);
sel.removeAllRanges();
sel.addRange(range);
}
}
} else if (document.selection && document.selection.type != "Control") {
document.selection.createRange().pasteHTML(html);
}
}
The only problem is that it pastes HTML content, at caret position using the htmlvariable. How can I transform that into plain text? I tried adding the jQuery .text(html)to variable without luck. Something like this might help:
唯一的问题是它使用html变量在插入符号位置粘贴 HTML 内容。如何将其转换为纯文本？我尝试将 jQuery 添加.text(html)到变量中，但没有运气。像这样的事情可能会有所帮助：
el.textContent||el.innerText;
Any ideas or a better solution? Thanks!
任何想法或更好的解决方案？谢谢！
EDIT:Thanks to the answers below I modified my code and solved the issue. I basically copied the value of textareainto a divand grabbed only its .text():
编辑：感谢下面的答案，我修改了我的代码并解决了这个问题。我基本上将 的值复制textarea到 adiv并只抓取了它的.text()：
// on paste, strip clipboard from HTML tags if any
$('#post_title, #post_content').on("paste", function() {
var text = $('<div>').html($("#area").val()).text();
pasteHtmlAtCaret(text);
}, 20);
});
采纳答案by Alex
Upon request from Jonathan Hobbs I am posting this as the answer. Thanks to the answers above I modified my code and solved the issue. I basically copied the value of textarea into a div and grabbed only its .text():
应 Jonathan Hobbs 的要求，我将其发布为答案。感谢上面的答案，我修改了我的代码并解决了这个问题。我基本上是将 textarea 的值复制到一个 div 中，并且只抓取了它的 .text()：
// on paste, strip clipboard from HTML tags if any
$('#post_title, #post_content').on("paste", function() {
setTimeout(function(){
var text = $('<div>').html($("#area").val()).text();
pasteHtmlAtCaret(text);
}, 20);
});
回答by Shehabic
- Create an external div,
- Put your html in that div,
- Copy the text from that div
- Insert it at the cursor's position.
- 创建一个外部div，
- 把你的 html 放在那个 div 中，
- 从该 div 复制文本
- 将其插入到光标位置。
回答by TomWan
Replace tag solution:
更换标签解决方案：
http://jsfiddle.net/tomwan/cbp1u2cx/1/
http://jsfiddle.net/tomwan/cbp1u2cx/1/
var $plainText = $("#plainText");
var $linkOnly = $("#linkOnly");
var $html = $("#html");
$plainText.on('paste', function (e) {
window.setTimeout(function () {
$plainText.html(removeAllTags(replaceStyleAttr($plainText.html())));
}, 0);
});
$linkOnly.on('paste', function (e) {
window.setTimeout(function () {
$linkOnly.html(removeTagsExcludeA(replaceStyleAttr($linkOnly.html())));
}, 0);
});
function replaceStyleAttr (str) {
return str.replace(/(<[\w\W]*?)(style)([\w\W]*?>)/g, function (a, b, c, d) {
return b + 'style_replace' + d;
});
}
function removeTagsExcludeA (str) {
return str.replace(/<\/?((?!a)(\w+))\s*[\w\W]*?>/g, '');
}
function removeAllTags (str) {
return str.replace(/<\/?(\w+)\s*[\w\W]*?>/g, '');
}
回答by Sebazzz
The solution I used is to set the innerText of the element on blur:
我使用的解决方案是将元素的 innerText 设置为模糊：
$element.on('blur', () => this.innerText = this.innerText);
$element.on('blur', () => this.innerText = this.innerText);
This keeps the whitespace, but strips the formatting. It may work acceptable in your scenario as well.
这会保留空格，但会去除格式。它在您的场景中也可以接受。
