PHP Classes

File: javascript.js

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  Classes of Er. Rochak Chauhan  >  AJAX Rating Counter  >  javascript.js  >  Download  
File: javascript.js
Role: Auxiliary data
Content type: text/plain
Description: javascript File
Class: AJAX Rating Counter
AJAX based star rating system
Author: By
Last change: Version 2
Date: 16 years ago
Size: 3,935 bytes
 

Contents

Class file image Download
var http = createRequestObject(); var displayRating = ''; var currentId = ''; function createRequestObject() { var ro; var browser = navigator.appName; if(browser == "Microsoft Internet Explorer"){ ro = new ActiveXObject("Microsoft.XMLHTTP"); } else{ ro = new XMLHttpRequest(); } return ro; } function updateRating(obj, rating) { var id = obj.title; var fullId = obj.id; var idName = fullId.substr(0, fullId.indexOf('_')); var totalRating = rating; currentId = idName; http.open('get', 'ajax.php?id='+id+'&idName='+idName); http.onreadystatechange = handleResponse; http.send(null); } function handleResponse() { if(http.readyState == 4){ var response = http.responseText; if (response == 'ERROR'){ alert("Sorry... Failed to update rating."); } else { alert("Thanks for your time."); } displayRating = response.substr(0, 4); document.getElementById(currentId+'_showrating').innerHTML = 'Rating: '+displayRating; totalRating = Math.ceil(response); var obj = document.getElementById(currentId+'_'+totalRating); changeover(obj, totalRating); displayStars(rating, currentId); } } function changeover(obj, rating) { var imageName = obj.src; var id = obj.title; var index = imageName.lastIndexOf('/'); var filename = imageName.substring(index+1); var fullId = obj.id; var idName = fullId.substr(0, fullId.indexOf('_')); var totalRating = rating; for(i=0; i<id; i++) { var num = i+1; if (num%2 == 0) { document.getElementById(idName+'_'+num).src = '_even1.jpg'; } else { document.getElementById(idName+'_'+num).src = '_odd1.jpg'; } } } function changeout(obj, rating) { var imageName = obj.src; var id = obj.title; var index = imageName.lastIndexOf('/'); var filename = imageName.substring(index+2); var fullId = obj.id; var idName = fullId.substr(0, fullId.indexOf('_')); var totalRating = rating; for(i=0; i<id; i++) { var num = i+1; if (num%2 == 0) { if(i < totalRating) { document.getElementById(idName+'_'+num).src = '__even1.jpg'; } else { document.getElementById(idName+'_'+num).src = 'even1.jpg'; } } else { if(i < totalRating) { document.getElementById(idName+'_'+num).src = '__odd1.jpg'; } else { document.getElementById(idName+'_'+num).src = 'odd1.jpg'; } } } } function displayStars(rating, idName) { document.write('<center>'); for(i=0; i < 10; i++ ) { if(i%2 ==0) { if(i < rating) { document.write('<img src="__odd1.jpg" id="'+idName+'_'+(i+1)+'" title="'+(i+1)+'" onmouseout="changeout(this, '+rating+')" onmouseover="changeover(this, '+rating+')" onclick="updateRating(this, '+rating+')" />'); } else { document.write('<img src="odd1.jpg" id="'+idName+'_'+(i+1)+'" title="'+(i+1)+'" onmouseout="changeout(this, '+rating+')" onmouseover="changeover(this, '+rating+')" onclick="updateRating(this, '+rating+')" />'); } } else { if(i < rating) { document.write('<img src="__even1.jpg" id="'+idName+'_'+(i+1)+'" title="'+(i+1)+'" onmouseout="changeout(this, '+rating+')" onmouseover="changeover(this, '+rating+')" onclick="updateRating(this, '+rating+')" />'); } else { document.write('<img src="even1.jpg" id="'+idName+'_'+(i+1)+'" title="'+(i+1)+'" onmouseout="changeout(this, '+rating+')" onmouseover="changeover(this, '+rating+')" onclick="updateRating(this, '+rating+')" />'); } } } if (displayRating == '') { document.write('<br /><div class="ratingText" id="'+idName+'_showrating" >'+displayRating+'</div>'); } else { document.write('<br /><div class="ratingText" id="'+idName+'_showrating" >'+totalRating+'</div>'); } document.write('</center>'); }