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富文本编辑器[WYSIWYG],使用javascript进行分页

2019-12-10 18:36:12 作者：互联网

是否可以使用JavaScript在富文本编辑器中实现类似于MS Word的分页.

我需要使用包含页面文本的JavaScript来实现编辑器.如果我输入的文本超出了页面的限制,则将自动创建一个新页面,并且文本将以完整的格式溢出到新页面.另外,如果我从其他来源复制大文本,则它应根据文本长度计算页面数,并将其划分为具有原始文本所有格式的页面.

我需要仅使用JavaScript,HTML和CSS根据像素大小将文本分成几行.

如果我从页面内部删除内容,则应该在当前页面中填充下一页的内容,如果删除页面中的所有内容,则应该删除该页面. MS word中几乎所有的寻呼功能都应在此实现.

解决方法:

请尝试这个…

Javascript代码pagination.js文件

function Pager(tableName, itemsPerPage) {
    this.tableName = tableName;
    this.itemsPerPage = itemsPerPage;
    this.currentPage = 1;
    this.pages = 0;
    this.inited = false;
    this.showRecords = function(from, to) {
        var rows = document.getElementById(tableName).rows;
        // i starts from 1 to skip table header row
        for (var i = 1; i < rows.length; i++) {
            if (i < from || i > to)
            rows[i].style.display = 'none';
            else
            rows[i].style.display = '';
        }
    }

    this.showPage = function(pageNumber) {
        if (! this.inited) {
            alert("not inited");
            return;
        }
        var oldPageAnchor = document.getElementById('pg'+this.currentPage);
        oldPageAnchor.className = 'pg-normal';

        this.currentPage = pageNumber;
        var newPageAnchor = document.getElementById('pg'+this.currentPage);
        newPageAnchor.className = 'pg-selected';

        var from = (pageNumber - 1) * itemsPerPage + 1;
        var to = from + itemsPerPage - 1;
        this.showRecords(from, to);
    }

    this.prev = function() {
        if (this.currentPage > 1)
            this.showPage(this.currentPage - 1);
    }

    this.next = function() {
        if (this.currentPage < this.pages) {
            this.showPage(this.currentPage + 1);
        }
    }

    this.init = function() {
        var rows = document.getElementById(tableName).rows;
        var records = (rows.length - 1);
        this.pages = Math.ceil(records / itemsPerPage);
        this.inited = true;
    }

    this.showPageNav = function(pagerName, positionId) {
        if (! this.inited) {
            alert("not inited");
            return;
        }
        var element = document.getElementById(positionId);

        var pagerHtml = '<span onclick="' + pagerName + '.prev();" class="pg-normal"> « Prev </span> | ';
        for (var page = 1; page <= this.pages; page++)
        pagerHtml += '<span id="pg' + page + '" class="pg-normal" onclick="' + pagerName + '.showPage(' + page + ');">' + page + '</span> | ';
        pagerHtml += '<span onclick="'+pagerName+'.next();" class="pg-normal"> Next »</span>';

        element.innerHTML = pagerHtml;
    }
}

HTML文件

<html version="-//W3C//DTD HTML 4.01 Transitional//EN">

<head>
<style type="text/css">
.pg-normal {
color: black;
font-weight: normal;
text-decoration: none;
cursor: pointer;
}
.pg-selected {
color: black;
font-weight: bold;
text-decoration: underline;
cursor: pointer;
}
</style>

<script type="text/javascript" src="pagination.js"></script>
</head>

<body>
<form action="" method="get" enctype="application/x-www-form-urlencoded">
<table id="results">
<tr>
<th>#</th>
<th>field</th>
</tr>
<tr>
<td>1</td>
<td>rajeev</td>
</tr>
<tr>
<td>2</td>
<td>ramesh</td>
</tr>
<tr>
<td>3</td>
<td>Rahul</td>
</tr>
<tr>
<td>4</td>
<td>Bala</td>
</tr>
<tr>
<td>5</td>
<td>Teamjhon</td>
</tr>
<tr>
<td>6</td>
<td>Robin</td>
</tr>
<tr>
<td>7</td>
<td>Sambha</td>
</tr>
<tr>
<td>8</td>
<td>Arjun</td>
</tr>
<tr>
<td>9</td>
<td>Satyan</td>
</tr>
<tr>
<td>10</td>
<td>Singapore</td>
</tr>
</table>
<div id="pageNavPosition"></div>
<div><input type="submit" onclick="alert('Hey this is just a sample!'); return false;" /> <input type="reset" /></div>
</form>

<script type="text/javascript"><!--
var pager = new Pager('results' 3);
pager.init();
pager.showPageNav('pager' 'pageNavPosition');
pager.showPage(1);
//--></script>

</body>
</html>

标签：paging,richtextediting,javascript
来源： https://codeday.me/bug/20191210/2103252.html