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PO3 Questions Jquery readmore plugin confused me
 

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  1. PO3 Questions Jquery readmore plugin confused me
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    <p>i see in other example jquery code like below, Why he make variable like this</p> <p><strong>var moreLink = $('.truncate_more_link', obj);</strong><br> why not <strong>var moreLink = $('.truncate_more_link');</strong> </p> <p>and i got confuse what a minTrail do in defaults object?? </p> <p>and onother confused in this example below what he means, Why body.length - 1 do??</p> <p><strong>var str2 = body.substring(splitLocation, body.length - 1);</strong> </p> <p>las thing when we want to use indexof in proper condition...??</p> <h2>full example of code:</h2> <pre><code>(function($){ $.fn.truncate = function(options) { var defaults = { length: 300, **minTrail: 20,** moreText: "more", lessText: "less", ellipsisText: "..." }; var options = $.extend(defaults, options); return this.each(function() { obj = $(this); var body = obj.html(); if(body.length &gt; options.length + **options.minTrail**) { var splitLocation = body.indexOf(' ', options.length); if(splitLocation != -1) { // truncate tip var splitLocation = body.indexOf(' ', options.length); var str1 = body.substring(0, splitLocation); **var str2 = body.substring(splitLocation, body.length - 1);** obj.html(str1 + '&lt;span class="truncate_ellipsis"&gt;' + options.ellipsisText + '&lt;/span&gt;' + '&lt;span class="truncate_more"&gt;' + str2 + '&lt;/span&gt;'); obj.find('.truncate_more').css("display", "none"); // insert more link obj.append( '&lt;div class="clearboth"&gt;' + '&lt;a href="#" class="truncate_more_link"&gt;' + options.moreText + '&lt;/a&gt;' + '&lt;/div&gt;' ); // set onclick event for more/less link **var moreLink = $('.truncate_more_link', obj);** **var moreContent = $('.truncate_more', obj);** **var ellipsis = $('.truncate_ellipsis', obj);** moreLink.click(function() { if(moreLink.text() == options.moreText) { moreContent.show('normal'); moreLink.text(options.lessText); ellipsis.css("display", "none"); } else { moreContent.hide('normal'); moreLink.text(options.moreText); ellipsis.css("display", "inline"); } return false; }); } } // end if }); }; })(jQuery); </code></pre> <p><em><strong>Thank's Hopefully Your answer!!</em></strong></p>
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