是否有一个简单的 js 函数可以用来用我的一些 html 替换当前文档的选择?
例如,文档包含 <p>AHAHAHA</p>
在某处,用户选择第一个“ha”文本 block 。
现在我想用类似的东西替换它:<span><font color="red">hoho</font></span>
当我在谷歌上搜索 *javascript replace selection * 时,我无法得到简单直接的答案!
最佳答案
是的。以下将在所有主流浏览器中执行此操作,之后可以根据评论中的要求选择插入的内容(尽管这部分未针对 IE <= 8 实现):
现场演示:http://jsfiddle.net/bXsWQ/147/
代码:
function replaceSelection(html, selectInserted) {
var sel, range, fragment;
if (typeof window.getSelection != "undefined") {
// IE 9 and other non-IE browsers
sel = window.getSelection();
// Test that the Selection object contains at least one Range
if (sel.getRangeAt && sel.rangeCount) {
// Get the first Range (only Firefox supports more than one)
range = window.getSelection().getRangeAt(0);
range.deleteContents();
// Create a DocumentFragment to insert and populate it with HTML
// Need to test for the existence of range.createContextualFragment
// because it's non-standard and IE 9 does not support it
if (range.createContextualFragment) {
fragment = range.createContextualFragment(html);
} else {
// In IE 9 we need to use innerHTML of a temporary element
var div = document.createElement("div"), child;
div.innerHTML = html;
fragment = document.createDocumentFragment();
while ( (child = div.firstChild) ) {
fragment.appendChild(child);
}
}
var firstInsertedNode = fragment.firstChild;
var lastInsertedNode = fragment.lastChild;
range.insertNode(fragment);
if (selectInserted) {
if (firstInsertedNode) {
range.setStartBefore(firstInsertedNode);
range.setEndAfter(lastInsertedNode);
}
sel.removeAllRanges();
sel.addRange(range);
}
}
} else if (document.selection && document.selection.type != "Control") {
// IE 8 and below
range = document.selection.createRange();
range.pasteHTML(html);
}
}
例子:
replaceSelection('<span><font color="red">hoho</font></span>', true);
关于javascript替换选择所有浏览器,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/5393922/