Hy ...我真的不想使用其他的编辑器......
我想学习"如何创造"不是"如何使用"
所以我决定创建自己的编辑器......
很容易创建bbcode编辑器...... 但是当我尝试创建HTML版本(实时预览和编辑)
时我有一点问题(可能是我最大的问题) 当然,在搜索之后提出问题是我最后的希望......
无论如何,我的英语很糟糕,所以我希望你能理解我所说的。
看,我的期望VS真的
这是我编辑中最简单的
$(document).ready(function(){
$(".buttonBold").click(function(){
$(".editableDiv").focus();
var help_me_anchorNode = window.getSelection().anchorNode.nodeValue;
var help_me_anchorOffset = window.getSelection().anchorOffset
var help_me_focusOffset = window.getSelection().focusOffset
var help_me_focusNodeValueLength = window.getSelection().focusNode.nodeValue.length;
var help_me_firstTag = "<b>";
var help_me_lastTag = "</b>";
if(help_me_anchorOffset > help_me_focusOffset){
var help_me_firstTag = "</b>";
var help_me_lastTag = "<b>";
}
window.getSelection().anchorNode.nodeValue = help_me_anchorNode.slice(0, help_me_anchorOffset) + help_me_firstTag + help_me_anchorNode.slice(help_me_anchorOffset);
var help_me_focusNodeValue = window.getSelection().focusNode.nodeValue;
if(window.getSelection().focusNode.nodeValue.length - help_me_focusNodeValueLength > 0) {
help_me_focusOffset += window.getSelection().focusNode.nodeValue.length - help_me_focusNodeValueLength;
}
window.getSelection().focusNode.nodeValue = help_me_focusNodeValue.slice(0, help_me_focusOffset) + help_me_lastTag + help_me_focusNodeValue.slice(help_me_focusOffset);
});
});
&#13;
.editableDiv{
width: 300px;
height: 100px;
background: #ccc;
padding: 10px;
}
&#13;
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.3/jquery.min.js"></script>
<button class="buttonBold">Bold</button>
<div class="editableDiv" contenteditable="true">
Double click this : HELPME
<br />
<br />
And then, click the "Bold" Button
<br />
The result will : <b>HELPME</b>
<br />
Not : <b>HELPME</b>
</div>
&#13;
答案 0 :(得分:2)
您可以使用window.getSelection()
和.surroundContents()
$(".buttonBoldHtml").click(function(){
$(".editableDiv").focus();
var highlight = window.getSelection(),
bold = $('<b/></b>')[0],
range = highlight.getRangeAt(0);
range.surroundContents(bold);
});
如果选择部分节点(当突出显示的文本在打开的标记之间开始或停止时),则必须使用extractContents()
:
$(".buttonBoldHtml").click(function(){
$(".editableDiv").focus();
var range = window.getSelection().getRangeAt(0),
bold = document.createElement('b');
bold.appendChild(range.extractContents());
range.insertNode(bold);
});
我编辑了这个演示并添加了一个粗体和斜体的测试: