单击仅工作一次
Single-click only works once
我想允许用户通过单击鼠标来删除div中的单词。它工作正常，请参阅 jsFiddle。
唯一的问题是单击功能仅在第一次单击时有效。之后，您需要双击。
我无法理解为什么它会这样。也许你可以？可能是jQuery(document).ready()的问题...
j查询：
// highlight a word/term quicker and smarter: so.com/a/35103840/1185126
jQuery(document).ready(function(e){
(function(els){
// variable declaration for previous range info
// and function for finding the sibling
var prevRangeInfo = {},
findSibling = function(thisNode, direction){
// get the child node list of the parent node
var childNodeList = thisNode.parentNode.childNodes,
children = [];
// convert the child node list to an array
for(var i=0, l=childNodeList.length; i<l; i++) children.push(childNodeList[i]);
return children[children.indexOf(thisNode) + direction];
};
for(var i=0;i<els.length;i++){
var el = els[i];
el.addEventListener('mouseup',function(evt){
if (document.createRange) { // Works on all browsers, including IE 9+
var selected = window.getSelection();
// Removing the following line from comments will make the function drag-only
/* if(selected.toString().length){ */
var d = document,
nA = selected.anchorNode,
oA = selected.anchorOffset,
nF = selected.focusNode,
oF = selected.focusOffset,
range = d.createRange(),
rangeLength = 0;
range.setStart(nA,oA);
range.setEnd(nF,oF);
// Check if direction of selection is right to left
if(range.startContainer !== nA || (nA === nF && oF < oA)){
range.setStart(nF,oF);
range.setEnd(nA,oA);
}
// Extend range to the next space or end of node
while(range.endOffset < range.endContainer.textContent.length && !/'s$/.test(range.toString())){
range.setEnd(range.endContainer, range.endOffset + 1);
}
// Extend range to the previous space or start of node
while(range.startOffset > 0 && !/^'s/.test(range.toString())){
range.setStart(range.startContainer, range.startOffset - 1);
}
// Remove spaces
if(/'s$/.test(range.toString()) && range.endOffset > 0)
range.setEnd(range.endContainer, range.endOffset - 1);
if(/^'s/.test(range.toString()))
range.setStart(range.startContainer, range.startOffset + 1);
// Store the length of the range
rangeLength = range.toString().length;
// Check if another range was previously selected
if(prevRangeInfo.startContainer && nA === nF && oA === oF){
var rangeTryContain = d.createRange(),
rangeTryLeft = d.createRange(),
rangeTryRight = d.createRange(),
nAp = prevRangeInfo.startContainer;
oAp = prevRangeInfo.startOffset;
nFp = prevRangeInfo.endContainer;
oFp = prevRangeInfo.endOffset;
rangeTryContain.setStart(nAp, oAp);
rangeTryContain.setEnd(nFp, oFp);
rangeTryLeft.setStart(nFp, oFp-1);
rangeTryLeft.setEnd(range.endContainer, range.endOffset);
rangeTryRight.setStart(range.startContainer, range.startOffset);
rangeTryRight.setEnd(nAp, oAp+1);
// Store range boundary comparisons
// & inner nodes close to the range boundary --> stores null if none
var compareStartPoints = range.compareBoundaryPoints(0, rangeTryContain) === 0,
compareEndPoints = range.compareBoundaryPoints(2, rangeTryContain) === 0,
leftInnerNode = range.endContainer.previousSibling,
rightInnerNode = range.startContainer.nextSibling;
// Do nothing if clicked on the right end of a word
if(range.toString().length < 1){
range.setStart(nAp,oAp);
range.setEnd(nFp,oFp);
}
// Collapse the range if clicked on last highlighted word
else if(compareStartPoints && compareEndPoints)
range.collapse();
// Remove a highlighted word from left side if clicked on
// This part is quite tricky!
else if(compareStartPoints){
range.setEnd(nFp,oFp);
if(range.startOffset + rangeLength + 1 >= range.startContainer.length){
if(rightInnerNode)
// there is a right inner node, set its start point as range start
range.setStart(rightInnerNode.firstChild, 0);
else {
// there is no right inner node
// there must be a text node on the right side of the clicked word
// set start of the next text node as start point of the range
var rightTextNode = findSibling(range.startContainer.parentNode, 1),
rightTextContent = rightTextNode.textContent,
level=1;
// if beginning of paragraph, find the first child of the paragraph
if(/^(?:'r'n|['r'n])|'s{2,}$/.test(rightTextContent)){
rightTextNode = findSibling(rightTextNode, 1).firstChild;
level--;
}
range.setStart(rightTextNode, level);
}
}
else
range.setStart(range.startContainer, range.startOffset + rangeLength + 1);
}
// Remove a hightlighted word from right side if clicked on
// This part is also tricky!
else if (compareEndPoints){
range.setStart(nAp,oAp);
if(range.endOffset - rangeLength - 1 <= 0){
if(leftInnerNode)
// there is a right inner node, set its start point as range start
range.setEnd(leftInnerNode.lastChild, leftInnerNode.lastChild.textContent.length);
else {
// there is no left inner node
// there must be a text node on the left side of the clicked word
// set start of the previous text node as start point of the range
var leftTextNode = findSibling(range.endContainer.parentNode, -1),
leftTextContent = leftTextNode.textContent,
level = 1;
// if end of paragraph, find the last child of the paragraph
if(/^(?:'r'n|['r'n])|'s{2,}$/.test(leftTextContent)){
leftTextNode = findSibling(leftTextNode, -1).lastChild;
level--;
}
range.setEnd(leftTextNode, leftTextNode.length - level);
}
}
else
range.setEnd(range.endContainer, range.endOffset - rangeLength - 1);
}
// Add previously selected range if adjacent
// Upgraded to include previous/next word even in a different paragraph
else if(/^[^'s]*((?:'r'n|['r'n])|'s{1,})[^'s]*$/.test(rangeTryLeft.toString()))
range.setStart(nAp,oAp);
else if(/^[^'s]*((?:'r'n|['r'n])|'s{1,})[^'s]*$/.test(rangeTryRight.toString()))
range.setEnd(nFp,oFp);
// Detach the range objects we are done with, clear memory
rangeTryContain.detach();
rangeTryRight.detach();
rangeTryLeft.detach();
}
// Save the current range --> not the whole Range object but what is neccessary
prevRangeInfo = {
startContainer: range.startContainer,
startOffset: range.startOffset,
endContainer: range.endContainer,
endOffset: range.endOffset
};
// Clear the saved range info if clicked on last highlighted word
if(compareStartPoints && compareEndPoints)
prevRangeInfo = {};
// Remove all ranges from selection --> necessary due to potential removals
selected.removeAllRanges();
// Assign the current range as selection
selected.addRange(range);
// Detach the range object we are done with, clear memory
range.detach();
el.style.MozUserSelect = '-moz-none';
// Removing the following line from comments will make the function drag-only
/* } */
} else {
// Fallback for Internet Explorer 8 and earlier
// (if you think it still is worth the effort of course)
}
});
/* This part is necessary to eliminate a FF specific dragging behavior */
el.addEventListener('mousedown',function(e){
if (window.getSelection) { // Works on all browsers, including IE 9+
var selection = window.getSelection ();
selection.collapse (selection.anchorNode, selection.anchorOffset);
} else {
// Fallback for Internet Explorer 8 and earlier
// (if you think it still is worth the effort of course)
}
el.style.MozUserSelect = 'text';
});
}
})(document.getElementsByClassName('taggable'));
});
// remove selected text
jQuery(document).ready(function() {
jQuery('.taggable').bind("mouseup", function() {
var text1;
if (window.getSelection().toString() != "") {
selectedText = window.getSelection().toString()
text1 = jQuery(".taggable").text().split("")
pointStart = window.getSelection().anchorOffset
pointEnd = window.getSelection().focusOffset
if (pointEnd < pointStart) {
pointStart = pointEnd
}
text1.splice(pointStart, selectedText.length);
text1 = text1.join("")
} else {
selectedText = jQuery(".taggable").text()
text1 = selectedText;
}
jQuery(".taggable").text(text1);
});
});
这可能无法解决您的问题，但这是另一种方法。
此代码将每个单词包装在 span 内，并为每个单词创建一个事件侦听器。
.HTML
<p>This is an example text</p>
爪哇语
jQuery(document).ready(function($) {
var text = $('p').text();
var arr = text.split(' ');
$('p').html('');
for (var i = 0; i < arr.length; i++) {
$('<span />').html(arr[i] + ' ').appendTo('p');
$('p').on('click', 'span:nth-of-type(' + (i + 1) + ')', function() {
$(this).remove();
});
}
});
我已经
发现主要问题是因为如果anchorOffset等于 focusOffset ，它不起作用，所以，可能的解决方案是在相等时添加 +1，然后代码将按预期工作，因为它在子字符串时至少找到一个字母。更改代码：
从
var selected = window.getSelection();
// Removing the following line from comments will make the function drag-only
/* if(selected.toString().length){ */
var d = document,
nA = selected.anchorNode,
oA = selected.anchorOffset,
nF = selected.focusNode,
oF = selected.focusOffset,
range = d.createRange(),
rangeLength = 0;
自
var selected = window.getSelection();
var offset = selected.focusOffset;
if(selected.anchorOffset == selected.focusOffset)
offset++;
// Removing the following line from comments will make the function drag-only
/* if(selected.toString().length){ */
var d = document,
nA = selected.anchorNode,
oA = selected.anchorOffset,
nF = selected.focusNode,
oF = offset,
range = d.createRange(),
rangeLength = 0;
我已经在 JFiddle 上测试了很多次，它工作正常，但是我仍然担心这会导致其他一些问题。
如果您遇到问题，请通知我，我会提供帮助。
编辑：
js小提琴
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