如果我有以下HTML:
<div class="content">
Vivamus <span>luctus</span> urna sed urna ultricies ac tempor dui sagittis.
</div>
我在mouseup
上运行了一个可以看到所选文本范围的事件:
$(".content").on("mouseup", function () {
var start = window.getSelection().baseOffset;
var end = window.getSelection().focusOffset;
if (start < end) {
var start = window.getSelection().baseOffset;
var end = window.getSelection().focusOffset;
} else {
var start = window.getSelection().focusOffset;
var end = window.getSelection().baseOffset;
}
console.log(window.getSelection());
console.log(start + ", " + end);
});
我从内容中选择了Vivamus
这个词,它会记录1, 8
,因为这是选择的范围。
如果,我选择单词urna
,它会记录15, 20
,但不会考虑<span>
元素HTML。
focusOffset
和baseOffset
是否还要计算HTML标记,而不仅仅是文本?
答案 0 :(得分:6)
<强>更新强>
直播示例:http://jsfiddle.net/FLwxj/61/
Using a clearSelection()
function和a replace approach,我能够达到预期的效果。
var txt = $('#Text').html();
$('#Text').html(
txt.replace(/<\/span>(?:\s)*<span class="highlight">/g, '')
);
clearSelection();
来源:
clearSelection()
:https://stackoverflow.com/a/6562764/1085891 您将在下面找到解决问题的方法。我按照代码效率的顺序放置它们。
工作解决方案
https://stackoverflow.com/a/8697302/1085891(live example)
window.highlight = function() {
var selection = window.getSelection().getRangeAt(0);
var selectedText = selection.extractContents();
var span = document.createElement("span");
span.style.backgroundColor = "yellow";
span.appendChild(selectedText);
span.onclick = function (ev) {
this.parentNode.insertBefore(
document.createTextNode(this.innerHTML),
this
);
this.parentNode.removeChild(this);
}
selection.insertNode(span);
}
https://stackoverflow.com/a/1623974/1085891(live example)
$(".content").on("mouseup", function () {
makeEditableAndHighlight('yellow');
});
function makeEditableAndHighlight(colour) {
sel = window.getSelection();
if (sel.rangeCount && sel.getRangeAt) {
range = sel.getRangeAt(0);
}
document.designMode = "on";
if (range) {
sel.removeAllRanges();
sel.addRange(range);
}
// Use HiliteColor since some browsers apply BackColor to the whole block
if (!document.execCommand("HiliteColor", false, colour)) {
document.execCommand("BackColor", false, colour);
}
document.designMode = "off";
}
function highlight(colour) {
var range, sel;
if (window.getSelection) {
// IE9 and non-IE
try {
if (!document.execCommand("BackColor", false, colour)) {
makeEditableAndHighlight(colour);
}
} catch (ex) {
makeEditableAndHighlight(colour)
}
} else if (document.selection && document.selection.createRange) {
// IE <= 8 case
range = document.selection.createRange();
range.execCommand("BackColor", false, colour);
}
}
其他有用的解决方案: