javascript - 范围/选择获取 HTML

Question

我有这个 fiddle :http://jsfiddle.net/Uddaa/

目前它的作用是，当您单击文本时，它会发出一个警报，其中包含到该点为止的文本。我该怎么做才能得到 html 而不仅仅是文本？

JavaScript:

$(".content").on("click", function () {
    getBefore();
});

function getBefore() {
    var sel = document.getSelection();
    var off = sel.anchorOffset;
    var ran = sel.getRangeAt(0);
    ran.setStart($(".content").get(0), 0);
    alert(ran.toString());
}

HTML:

<div class="content">
    <p><b>Click</b> anywhere <u>within <em>the</em> text</u> to to see the code up to that point.</p>
</div>

Answer 1

ran.cloneContents().childNodes[1].innerHTML 为您提供完整的 html。

参见 jsfiddle或代码片段。

document.querySelector(".content").addEventListener("click", getHtmlBeforeThis);

function getHtmlBeforeThis(evt) {
  const origin = evt.target.closest(".content");
  if (origin) {
    const selection = document.getSelection();
    const offset = selection.anchorOffset;
    const range = selection.getRangeAt(0);
    range.setStart(origin, 0);
    const upToClickedHtml = range.cloneContents().childNodes[1].innerHTML;
    range.setEnd(origin, 0);
    console.clear();
    console.log(upToClickedHtml);
  }
}

<div class="content">
    <p><b>Click</b> anywhere <u>within <em>the</em> text</u> to to see the code up to that point.</p>
</div>