103 lines
3.1 KiB
JavaScript
103 lines
3.1 KiB
JavaScript
(function($) {
|
|
|
|
// Matches trailing non-space characters.
|
|
var chop = /(\s*\S+|\s)$/;
|
|
|
|
// Matches the first word in the string.
|
|
var start = /^(\S*)/;
|
|
|
|
// Return a truncated html string. Delegates to $.fn.truncate.
|
|
$.truncate = function(html, options) {
|
|
return $('<div></div>').append(html).truncate(options).html();
|
|
};
|
|
|
|
// Truncate the contents of an element in place.
|
|
$.fn.truncate = function(options) {
|
|
if ($.isNumeric(options)) options = {length: options};
|
|
var o = $.extend({}, $.truncate.defaults, options);
|
|
|
|
return this.each(function() {
|
|
var self = $(this);
|
|
|
|
if (o.noBreaks) self.find('br').replaceWith(' ');
|
|
|
|
var text = self.text();
|
|
var excess = text.length - o.length;
|
|
|
|
if (o.stripTags) self.text(text);
|
|
|
|
// Chop off any partial words if appropriate.
|
|
if (o.words && excess > 0) {
|
|
var truncated = text.slice(0, o.length).replace(chop, '').length;
|
|
|
|
if (o.keepFirstWord && truncated === 0) {
|
|
excess = text.length - start.exec(text)[0].length - 1;
|
|
} else {
|
|
excess = text.length - truncated - 1;
|
|
}
|
|
}
|
|
|
|
if (excess < 0 || !excess && !o.truncated) return;
|
|
|
|
// Iterate over each child node in reverse, removing excess text.
|
|
$.each(self.contents().get().reverse(), function(i, el) {
|
|
var $el = $(el);
|
|
var text = $el.text();
|
|
var length = text.length;
|
|
|
|
// If the text is longer than the excess, remove the node and continue.
|
|
if (length <= excess) {
|
|
o.truncated = true;
|
|
excess -= length;
|
|
$el.remove();
|
|
return;
|
|
}
|
|
|
|
// Remove the excess text and append the ellipsis.
|
|
if (el.nodeType === 3) {
|
|
// should we finish the block anyway?
|
|
if (o.finishBlock) {
|
|
$(el.splitText(length)).replaceWith(o.ellipsis);
|
|
} else {
|
|
$(el.splitText(length - excess - 1)).replaceWith(o.ellipsis);
|
|
}
|
|
return false;
|
|
}
|
|
|
|
// Recursively truncate child nodes.
|
|
$el.truncate($.extend(o, {length: length - excess}));
|
|
return false;
|
|
});
|
|
});
|
|
};
|
|
|
|
$.truncate.defaults = {
|
|
|
|
// Strip all html elements, leaving only plain text.
|
|
stripTags: false,
|
|
|
|
// Only truncate at word boundaries.
|
|
words: false,
|
|
|
|
// When 'words' is active, keeps the first word in the string
|
|
// even if it's longer than a target length.
|
|
keepFirstWord: false,
|
|
|
|
// Replace instances of <br> with a single space.
|
|
noBreaks: false,
|
|
|
|
// if true always truncate the content at the end of the block.
|
|
finishBlock: false,
|
|
|
|
// The maximum length of the truncated html.
|
|
length: Infinity,
|
|
|
|
// The character to use as the ellipsis. The word joiner (U+2060) can be
|
|
// used to prevent a hanging ellipsis, but displays incorrectly in Chrome
|
|
// on Windows 7.
|
|
// http://code.google.com/p/chromium/issues/detail?id=68323
|
|
ellipsis: '\u2026' // '\u2060\u2026'
|
|
|
|
};
|
|
|
|
})(jQuery); |