【发布时间】：2018-01-16 05:35:45
【问题描述】：
我尝试在编辑器中添加下划线按钮但不起作用。
这是trumbowyg 编辑器的代码：
https://jsfiddle.net/rbyjgpjg/
/* ===========================================================
* trumbowyg.cleanpaste.js v1.0
* Font Clean paste plugin for Trumbowyg
* http://alex-d.github.com/Trumbowyg
* ===========================================================
* Author : Eric Radin
*/
/**
* This plugin will perform a "cleaning" on any paste, in particular
* it will clean pasted content of microsoft word document tags and classes.
*/
(function($) {
'use strict';
function reverse(sentString) {
var theString = '';
for (var i = sentString.length - 1; i >= 0; i -= 1) {
theString += sentString.charAt(i);
}
return theString;
}
function checkValidTags(snippet) {
var theString = snippet;
// Replace uppercase element names with lowercase
theString = theString.replace(/<[^> ]*/g, function(match) {
return match.toLowerCase();
});
// Replace uppercase attribute names with lowercase
theString = theString.replace(/<[^>]*>/g, function(match) {
match = match.replace(/ [^=]+=/g, function(match2) {
return match2.toLowerCase();
});
return match;
});
// Put quotes around unquoted attributes
theString = theString.replace(/<[^>]*>/g, function(match) {
match = match.replace(/( [^=]+=)([^"][^ >]*)/g, '$1\"$2\"');
return match;
});
return theString;
}
function cleanIt(htmlBefore, htmlAfter) {
var matchedHead = '';
var matchedTail = '';
var afterStart;
var afterFinish;
var newSnippet;
// we need to extract the inserted block
for (afterStart = 0; htmlAfter.charAt(afterStart) === htmlBefore.charAt(afterStart); afterStart += 1) {
matchedHead += htmlAfter.charAt(afterStart);
}
// If afterStart is inside a HTML tag, move to opening brace of tag
for (var i = afterStart; i >= 0; i -= 1) {
if (htmlBefore.charAt(i) === '<') {
afterStart = i;
matchedHead = htmlBefore.substring(0, afterStart);
break;
} else if (htmlBefore.charAt(i) === '>') {
break;
}
}
// now reverse string and work from the end in
htmlAfter = reverse(htmlAfter);
htmlBefore = reverse(htmlBefore);
// Find end of both strings that matches
for (afterFinish = 0; htmlAfter.charAt(afterFinish) === htmlBefore.charAt(afterFinish); afterFinish += 1) {
matchedTail += htmlAfter.charAt(afterFinish);
}
// If afterFinish is inside a HTML tag, move to closing brace of tag
for (var j = afterFinish; j >= 0; j -= 1) {
if (htmlBefore.charAt(j) === '>') {
afterFinish = j;
matchedTail = htmlBefore.substring(0, afterFinish);
break;
} else if (htmlBefore.charAt(j) === '<') {
break;
}
}
matchedTail = reverse(matchedTail);
// If there's no difference in pasted content
if (afterStart === (htmlAfter.length - afterFinish)) {
return false;
}
htmlAfter = reverse(htmlAfter);
newSnippet = htmlAfter.substring(afterStart, htmlAfter.length - afterFinish);
// first make sure all tags and attributes are made valid
newSnippet = checkValidTags(newSnippet);
// Replace opening bold tags with strong
newSnippet = newSnippet.replace(/<b(\s+|>)/g, '<strong$1');
// Replace closing bold tags with closing strong
newSnippet = newSnippet.replace(/<\/b(\s+|>)/g, '</strong$1');
// Replace italic tags with em
newSnippet = newSnippet.replace(/<i(\s+|>)/g, '<em$1');
// Replace closing italic tags with closing em
newSnippet = newSnippet.replace(/<\/i(\s+|>)/g, '</em$1');
// strip out comments -cgCraft
newSnippet = newSnippet.replace(/<!(?:--[\s\S]*?--\s*)?>\s*/g, '');
// strip out -cgCraft
newSnippet = newSnippet.replace(/ /gi, ' ');
// strip out extra spaces -cgCraft
newSnippet = newSnippet.replace(/ <\//gi, '</');
while (newSnippet.indexOf(' ') !== -1) {
var anArray = newSnippet.split(' ');
newSnippet = anArray.join(' ');
}
// strip -cgCraft
newSnippet = newSnippet.replace(/^\s*|\s*$/g, '');
// Strip out unaccepted attributes
newSnippet = newSnippet.replace(/<[^>]*>/g, function(match) {
match = match.replace(/ ([^=]+)="[^"]*"/g, function(match2, attributeName) {
if (['alt', 'href', 'src', 'title'].indexOf(attributeName) !== -1) {
return match2;
}
return '';
});
return match;
});
// Final cleanout for MS Word crud
newSnippet = newSnippet.replace(/<\?xml[^>]*>/g, '');
newSnippet = newSnippet.replace(/<[^ >]+:[^>]*>/g, '');
newSnippet = newSnippet.replace(/<\/[^ >]+:[^>]*>/g, '');
// remove unwanted tags
newSnippet = newSnippet.replace(/<(div|span|style|meta|link){1}.*?>/gi, '');
htmlAfter = matchedHead + newSnippet + matchedTail;
return htmlAfter;
}
// clean editor
// this will clean the inserted contents
// it does a compare, before and after paste to determine the
// pasted contents
$.extend(true, $.trumbowyg, {
plugins: {
cleanPaste: {
init: function(trumbowyg) {
trumbowyg.pasteHandlers.push(function() {
try {
var contentBefore = trumbowyg.$ed.html();
setTimeout(function() {
var contentAfter = trumbowyg.$ed.html();
contentAfter = cleanIt(contentBefore, contentAfter);
trumbowyg.$ed.html(contentAfter);
}, 0);
} catch (c) {}
});
}
}
}
});
})(jQuery);
$('#editor1').trumbowyg();body {
background-color: white;
}<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.1.0/jquery.min.js"></script>
<script src="https://cdn.rawgit.com/Alex-D/Trumbowyg/v2.5.1/dist/trumbowyg.min.js"></script>
<link href="https://cdn.rawgit.com/Alex-D/Trumbowyg/v2.5.1/dist/ui/trumbowyg.min.css" rel="stylesheet" />
<textarea id="editor1">This is a test. Copy some large piece of text and 'paste' it after this line. The cursor will reset to the first character.</textarea>我尝试编辑，但不知道如何编辑。
我能得到一些建议吗？
【问题讨论】：
标签： javascript html trumbowyg