Greasy Fork

I propose this slightly updated version of the script, with variables in it. This allows anybody to adapt the script (type of graph, width, height) without changing the code itself.

The optional variables to define in Greasemonkey are:

• width: the width of the image in pixel. Default: 400
• height: the height of the image in pixel. Default: 250
• maxwidth: the width of the image, in percentage of the available space on Amazon page. Default: 60
• chart: The type type of graph. Possible other values are "amazon", "new", "used", "new-used", & "amazon-new-used". Default is "amazon-new"

// ==UserScript==
// @name          Amazon Camel Graph Revived/Fixed
// @version       1.0.12
// @description    Add CamelCamelCamel graph + link to Amazon product pages.
// @namespace      null
// @include        https://www.amazon.*/*
// @include        https://smile.amazon.*/*
// @require        https://ajax.googleapis.com/ajax/libs/jquery/1.3.2/jquery.js
// @require        https://ajax.googleapis.com/ajax/libs/jquery/1.7.1/jquery.min.js
// @grant       GM_xmlhttpRequest
// @grant       GM_getValue
// ==/UserScript==

var width = GM_getValue("width", 400);
var height = GM_getValue("height", 250);
var maxwidth = GM_getValue("maxwidth", 60);
var chart = GM_getValue("chart", "amazon-new"); //Possible other values are "amazon", "new", "used", "new-used", & "amazon-new-used"

var arr = document.domain.split(".");
var country = arr[arr.length - 1];
if (country=="com") {country = "us";}

var element = $(':input[id="ASIN"]');
var asin = $.trim(element.attr("value"));

if (asin=="") {
        element = $(':input[id="ASIN"]');
        asin = $.trim(element.attr("value"));
        }
var link2 = "<a  target='blank' href='https://" + country + ".camelcamelcamel.com/product/" + asin + "'><img src='https://charts.camelcamelcamel.com/" + country + "/" + asin + "/" + chart + ".png?force=1&zero=0&w=" + width + "&h=" + height + "&desired=false&legend=0&ilt=1&tp=all&fo=0' /></a>";
var camelurl = 'https://' + country + '.camelcamelcamel.com/product/' + asin;
GM_xmlhttpRequest({
    method: 'GET',
    url: camelurl,

    onload: function(response) {

    var parser      = new DOMParser ();
        var responseDoc = parser.parseFromString (response.responseText, "text/html");
    var chartpost = 0;

    /* if (chart=="amazon"||chart=="amazon-new"||chart=="amazon-new-used"||chart=="amazon-used"){
        if (!responseDoc.getElementById('price_type_1').disabled) {
$("#averageCustomerReviews_feature_div").append("<div id='camelcamelcamel' style='margin-top: 10px; margin-left: -10px'>" + link2 + "</div>");
chartpost = 1;
    }
}

if (chart=="new"||chart=="amazon-new"||chart=="amazon-new-used"||chart=="new-used"){
        if (!responseDoc.getElementById('price_type_2').disabled && chartpost==0) {
$("#averageCustomerReviews_feature_div").append("<div id='camelcamelcamel' style='margin-top: 10px; margin-left: -10px'>" + link2 + "</div>");
chartpost = 1;
    }
}


if (chart=="used"||chart=="amazon-used"||chart=="amazon-new-used"||chart=="new-used"){
        if (!responseDoc.getElementById('price_type_2').disabled && chartpost==0) {
$("#averageCustomerReviews_feature_div").append("<div id='camelcamelcamel' style='margin-top: 10px; margin-left: -10px'>" + link2 + "</div>");

    }
} */

/* Block comment above replaced  by */
$("#unifiedPrice_feature_div").append("<div id='camelcamelcamel' style='margin-top: 10px; margin-left: -10px; max-width: " + maxwidth +"%'>" + link2 + "</div>");

    }
});

function thisCodeProduct () {
  var url = unescape(location.href);
  var pattern = "https://([a-z]{0,2}).?camelcamelcamel.com/(.*)/product/B([A-Z0-9]{9}).*";
  var exp = new RegExp(pattern, "gi");
  return url.replace(exp,"$3");
}

var url = unescape(location.href);
var pattern = "https://([a-z]{0,2}).?camelcamelcamel.com/.*";
var exp = new RegExp(pattern, "gi");
var code = url.replace(exp,"$1");

if (code == '')
  code = 'com';
else if (code == 'uk')
  code = 'co.uk';

$(document).ready(function () {
    var links = document.evaluate("//a[contains(@href, 'camelcamelcamel.com')]", document, null, XPathResult.UNORDERED_NODE_SNAPSHOT_TYPE, null);
    for (var i = 0; i < links.snapshotLength; i++)
    {
      var link = links.snapshotItem(i);
      if (link.title == 'View the product page at Amazon') {
        link.removeAttribute('onclick');
        link.href = 'https://www.amazon.'+code+'/dp/B'+thisCodeProduct()+'/';
      }
    }



});

(function(doc) {
    // ASIN.0 in kindle store
    var asin = doc.getElementById("ASIN") || doc.getElementsByName("ASIN.0")[0];
    if (asin) {
        asin = asin.value
        history.replaceState(null, "", "/dp/" + asin + "/");
    }

})(document);

Thanks it's done !