我有一个很长的文本块。我想把这篇文章的每2500个字符包装成一个<div>
,这样我就可以对它进行分页
以下不起作用:
//replace 2500 for 5 for purpose of this example
$text="sfdkjas;fakska;ldjk";
$text=wordwrap($text, 5, '<div class="individualPage">');
输出:
sfdkj<div class="individualPage">as;fa<div class="individualPage">kska;l<div
class="individualPage">djk
显然,我需要关闭</div>
标签来实现这一点。
有人在PHP或Javascript/jQuery中对此有什么建议吗?
只需添加</div>
?
$text = '<div class="individualPage">'
. wordwrap($text, 5, '</div><div class="individualPage">')
. '</div>';
然而,您可以使用javascript做得更好:您可以根据查看器的屏幕大小进行分页。
只需将HTML设置为:
<div id="target">...</div>
为页面添加一些css:
#target {
white-space: pre-wrap; /* respect line breaks */
}
.individualPage {
border: 1px solid black;
padding: 5px;
}
然后使用以下代码:
var contentBox = $('#target');
//get the text as an array of word-like things
var words = contentBox.text().split(' ');
function paginate() {
//create a div to build the pages in
var newPage = $('<div class="individualPage" />');
contentBox.empty().append(newPage);
//start off with no page text
var pageText = null;
for(var i = 0; i < words.length; i++) {
//add the next word to the pageText
var betterPageText = pageText ? pageText + ' ' + words[i]
: words[i];
newPage.text(betterPageText);
//Check if the page is too long
if(newPage.height() > $(window).height()) {
//revert the text
newPage.text(pageText);
//and insert a copy of the page at the start of the document
newPage.clone().insertBefore(newPage);
//start a new page
pageText = null;
} else {
//this longer text still fits
pageText = betterPageText;
}
}
}
$(window).resize(paginate).resize();
这将与PHP解决方案结合使用,在禁用javascript的情况下提供向后兼容性。
这是我的做法:
$out = '';
$text = str_split($text, 2500);
foreach($text as $t){
$out .= "<div class='individualPage'>".$t."</div>";
}
echo $out;
编辑:这会拆散单词,所以请使用wordwrap()
。:D
只需在每次迭代的开始添加一个开始的div,在结束时添加一个结束的div,并在开始时添加结束的div。
$div = '<div class="individualPage">';
$text = $div . wordwrap($text, 5, "</div>$div") . '</div>';
在Javascript中,没有那么好的内置解决方案。
var s = text, div = "<div class='individualPage'>";
while(text.length > 5) {
s = text.slice(0, 5) + "</div>" + div;
text = text.slice(5);
}
s = div + s + "</div>";
只是为了好玩-这里有一个相当丑陋的JavaScript RegExp,它将对文本进行分页,并尽量不打断单词。不过,我不确定它在大量文本上的表现会有多好。
var text = ....
// Grab 2500 (or slightly more if it doesn't exactly end on a word boundary)
// characters, or less than 2500 if it's at the end of the string.
text = text.replace(/(((.|n){2500,2520}?b)|((.|n){1,2499}(?!.)))/mg,
'<div class="individual-page">$1</div>')
jsFiddle