【发布时间】：2016-02-21 06:14:27
【问题描述】：
以下 JSFiddle 将文本拆分为单独的段落 <p> 框，并设置文本限制。
是否可以根据 select 选项通过 contenteditable 更改框中的文本大小，同时仍然允许编辑、删除文本限制并保留动态大小属性？
更新 2：生成的所有框都需要：
“等于相同的高度和宽度”
并在字体为动态更新，需要在所有元素之间保持一致。
更新 3：最后生成的段落不等于其他具有边框大小高度的段落。
更新 4：所有段落都需要使用高度属性自动生成。当前答案的问题是最后生成的段落边框也需要与其他段落的前一个高度边框的高度相同，包括更改字体大小时。
更新 5 [图像]：最后分割的段落高度和边框不等于其他问题的示例。
链接到Fiddle
如果可以提供一个新的小提琴，将不胜感激，因为我还是编码新手。 谢谢你！
$(function() {
$('select').on('change', function() {
var targets = $('p'),
property = this.dataset.property;
targets.css(property, this.value);
}).prop('selectedIndex', 0);
});
var btn = document.getElementById('go'),
textarea = document.getElementById('textarea1'),
content = document.getElementById('content'),
chunkSize = 100;
btn.addEventListener('click', initialDistribute);
content.addEventListener('keyup', handleKey);
content.addEventListener('paste', handlePaste);
function initialDistribute() {
var text = textarea.value;
while (content.hasChildNodes()) {
content.removeChild(content.lastChild);
}
rearrange(text);
}
function rearrange(text) {
var chunks = splitText(text, false);
chunks.forEach(function(str, idx) {
para = document.createElement('P');
para.setAttribute('contenteditable', true);
para.textContent = str;
content.appendChild(para);
});
}
function handleKey(e) {
var para = e.target,
position,
key, fragment, overflow, remainingText;
key = e.which || e.keyCode || 0;
if (para.tagName != 'P') {
return;
}
if (key != 13 && key != 8) {
redistributeAuto(para);
return;
}
position = window.getSelection().getRangeAt(0).startOffset;
if (key == 13) {
fragment = para.lastChild;
overflow = fragment.textContent;
fragment.parentNode.removeChild(fragment);
remainingText = overflow + removeSiblings(para, false);
rearrange(remainingText);
}
if (key == 8 && para.previousElementSibling && position == 0) {
fragment = para.previousElementSibling;
remainingText = removeSiblings(fragment, true);
rearrange(remainingText);
}
}
function handlePaste(e) {
if (e.target.tagName != 'P') {
return;
}
overflow = e.target.textContent + removeSiblings(fragment, true);
rearrange(remainingText);
}
function redistributeAuto(para) {
var text = para.textContent,
fullText;
if (text.length > chunkSize) {
fullText = removeSiblings(para, true);
}
rearrange(fullText);
}
function removeSiblings(elem, includeCurrent) {
var text = '',
next;
if (includeCurrent && !elem.previousElementSibling) {
parent = elem.parentNode;
text = parent.textContent;
while (parent.hasChildNodes()) {
parent.removeChild(parent.lastChild);
}
} else {
elem = includeCurrent ? elem.previousElementSibling : elem;
while (next = elem.nextSibling) {
text += next.textContent;
elem.parentNode.removeChild(next);
}
}
return text;
}
function splitText(text, useRegex) {
var chunks = [],
i, textSize, boundary = 0;
if (useRegex) {
var regex = new RegExp('.{1,' + chunkSize + '}\\b', 'g');
chunks = text.match(regex) || [];
} else {
for (i = 0, textSize = text.length; i < textSize; i = boundary) {
boundary = i + chunkSize;
if (boundary <= textSize && text.charAt(boundary) == ' ') {
chunks.push(text.substring(i, boundary));
} else {
while (boundary <= textSize && text.charAt(boundary) != ' ') {
boundary++;
}
chunks.push(text.substring(i, boundary));
}
}
}
return chunks;
}#text_land {
border: 1px solid #ccc;
padding: 25px;
margin-bottom: 30px;
}
textarea {
width: 95%;
}
label {
display: block;
width: 50%;
clear: both;
margin: 0 0 .5em;
}
label select {
width: 50%;
float: right;
}
* {
box-sizing: border-box;
padding: 0;
margin: 0;
}
body {
font-family: monospace;
font-size: 1em;
}
h3 {
margin: 1.2em 0;
}
div {
margin: 1.2em;
}
textarea {
width: 100%;
}
button {
padding: .5em;
}
p {
padding: 1.2em .5em;
margin: 1.4em 0;
border: 1px dashed #aaa;
}<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<div id="styles">
<label>Font-size:
<select data-property="font-size">
<option disabled>
Select font-size:
</option>
<option>
smaller
</option>
<option>
10px
</option>
<option>
12px
</option>
<option>
14px
</option>
<option>
16px
</option>
<option>
18px
</option>
<option>
20px
</option>
<option>
larger
</option>
</select>
</label>
</div>
<div>
<h3>Paste text in the field below to divide text into paragraphs..</h3>
<textarea id="textarea1" placeholder="Type text here, then press the button below." rows="5">
</textarea>
<br>
<br>
<button id="go">Divide Text into Paragraphs</button>
</div>
<div>
<h3 align="right">Divided Text Will Appear Below:</h3>
<hr>
<div id="content"></div>
</div>【问题讨论】：
标签： javascript jquery html css