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POprev / next nav codes to be more efficient and flexible
 

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  1. POprev / next nav codes to be more efficient and flexible
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    <p>I have working codes that sets the Prev and Next URL based on the available pages numbers and the URL you are currently on.</p> <p>My codes are way too long and not flexible at all. How can I make it more flexible and production ready?</p> <p><a href="http://jsfiddle.net/sunflowersh/ppDL7/5/" rel="nofollow">http://jsfiddle.net/sunflowersh/ppDL7/5/</a> </p> <pre><code>var currentindex = '4'; //updated based on the current index data var indexNum = parseInt(currentindex); var currentURL = document.location.href.substring(document.location.href.lastIndexOf("/")+1, document.location.href.length); var baseURL ="/en_US/"; var leftURL = ""; var rightURL = ""; switch(indexNum) { case 2: // if there are only index, index1, and index2 if((currentURL.indexOf("index.html")&gt;-1)||(currentURL.indexOf("index.")&gt;-1)){ leftURL= baseURL + "index" + parseInt(indexNum+1) + ".html"; rightURL= baseURL + "index" + parseInt(indexNum+1) + ".html"; } else { leftURL= baseURL + "index" + parseInt(indexNum-1) + ".html"; rightURL= baseURL + "index" + parseInt(indexNum+1) + ".html"; } break; case 3: // if on index3.html or index.html // make the right arrow URL go back to index1.html if((currentURL.indexOf("index3.html")&gt;-1)||(currentURL.indexOf("index.")&gt;-1)){ leftURL= baseURL + "index" + parseInt(indexNum-1) + ".html"; rightURL= baseURL + "index" + parseInt(indexNum-2) + ".html"; } else { leftURL= baseURL + "index" + parseInt(indexNum-1) + ".html"; rightURL= baseURL + "index" + parseInt(indexNum+1) + ".html"; } break; case 4: if((currentURL.indexOf("index4.html")&gt;-1)||(currentURL.indexOf("index.")&gt;-1)){ leftURL= baseURL + "index" + parseInt(indexNum-1) + ".html"; rightURL= baseURL + "index" + parseInt(indexNum-3) + ".html"; } else { leftURL= baseURL + "index" + parseInt(indexNum-1) + ".html"; rightURL= baseURL + "index" + parseInt(indexNum+1) + ".html"; } break; case 5: if((currentURL.indexOf("index5.html")&gt;-1)||(currentURL.indexOf("index.")&gt;-1)){ leftURL= baseURL + "index" + parseInt(indexNum-1) + ".html"; rightURL= baseURL + "index" + parseInt(indexNum-3) + ".html"; } else { leftURL= baseURL + "index" + parseInt(indexNum-1) + ".html"; rightURL= baseURL + "index" + parseInt(indexNum+1) + ".html"; } break; default: // if no current index, disable the link leftURL= baseURL + "#"; rightURL= baseURL + "#"; } var leftArrow =$(".leftArrow").find("a").attr("href",leftURL); var rightArrow =$(".rightArrow").find("a").attr("href",rightURL); </code></pre>
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