javascript - 脚本不显示原始图像

Question

伙计们，我有一个显示博客文章的脚本，只有文章的图像质量很差。

查看脚本，唯一引用图像的部分是这个

// Get the post thumbnails
postimg = ("media$thumbnail" in entry) ? entry.media$thumbnail.url : imgBlank;

// Build the post template
output += '<div class="itemposts">';
output += '<h6><a href="' + posturl + '" title="' + posttitle + '">' + posttitle + '</a></h6>';
output += '<div class="iteminside"><a href="' + posturl + '"><img src="' + postimg + '" /></a>';
output += '<span class="summary">' + postsumm + '</span></div>';
output += '<div style="clear:both;"></div><div class="itemfoot">' + timepub + replies + '<a class="itemrmore" href="' + posturl + '">' + rmoreText + '</a></div>';
output += '</div>';

CSS 代码:

.itemposts img {
  float:left;
  height:90px;
  width:200px;
  margin:2px 10px 2px 0px;
  -webkit-box-shadow:none;
  -moz-box-shadow:none;
  box-shadow:none;
  background-color:#fafafa;
  border:1px solid #dcdcdc;
  padding:4px;
}

有谁知道需要更改代码的哪一部分才能以原始质量显示图像？

添加完整代码完整代码

<script>
var showPostDate   = true,
    showComments   = true,
    idMode         = true,
    sortByLabel    = false,
    labelSorter    = "Games",
    loadingText    = "Loading...",
    totalPostLabel = "Jumlah posting:",
    jumpPageLabel  = "Halaman",
    commentsLabel  = "Komentar",
    rmoreText      = "Selengkapnya &#9658;",
    prevText       = "Sebelumnya",
    nextText       = "Berikutnya",
    siteUrl        = "https://elfenliedbrazil.blogspot.com/",
    postPerPage   = 6,
    numChars       = 370,
    imgBlank       = "data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAIAAACQd1PeAAAAA3NCSVQICAjb4U/gAAAADElEQVQImWOor68HAAL+AX7vOF2TAAAAAElFTkSuQmCC";
</script>

<script type='text/javascript'>
//<![CDATA[
// -----------------------------------------------------------------------------------------
// 
// Original: 
// Modified by Taufik Nurrohman
//
// -----------------------------------------------------------------------------------------

var minpage = 6; // Minimum number to display the page
var maxpage = 10; // The maximum number of pages to display
var firstpage = 0; // Detect the first time it is executed
var pagernum = 0; // Contain the page number where we
var postsnum = 0; // Start the first page
var actualpage = 1; // Starting value of the current page (it will change if you click the pagination).

// This is the container template that will be used to insert the posts template, pagination and the posts count
document.write('<div id="toc-outer"><div id="results"></div><div id="itempager" style="position:relative;"><div id="pagination"></div><div id="totalposts"></div><a title="Taufik Nurrohman" style="display:block!important;visibility:visible!important;opacity:1!important;position:absolute;bottom:10px;right:14px;font:normal bold 8px Arial,Sans-Serif!important;color:#666;text-shadow:0 1px 0 rgba(255,255,255,.1);text-decoration:none;" href="http://hompimpaalaihumgambreng.blogspot.com/2012/03/daftar-isi-blogger-dengan-navigasi.html" target="_blank">&#9658;TN</a></div></div>');

var _results = document.getElementById('results');
var _pagination = document.getElementById('pagination');
var _totalposts = document.getElementById('totalposts');

// Build the table of contents framework

function showPagePosts(json) {

    var entry, posttitle, posturl, postimg, postsumm, replies, monthnames, timepub, output = "";

    if (pagernum === 0) {
        postsnum = parseInt(json.feed.openSearch$totalResults.$t);
        pagernum = parseInt(postsnum / postPerPage) + 1;
    }

    for (var i = 0; i < postPerPage; i++) {

        if ("entry" in json.feed) {

            if (i == json.feed.entry.length) break;

            entry = json.feed.entry[i];
            posttitle = entry.title.$t; // Get the post title

            // Get rel="alternate" for truly post url
            for (var k = 0, elen = entry.link.length; k < elen; k++) {
                if (entry.link[k].rel == "alternate") {
                    posturl = entry.link[k].href; // This is your real post URL!
                    break;
                }
            }

            // Get the comments count
            for (var l = 0, clen = entry.link.length; l < clen; l++) {
                if (entry.link[l].rel == "replies" && entry.link[l].type == "text/html") {
                    var commentsnum = entry.link[l].title.split(" ")[0]; // This is your comments count
                    break;
                }
            }

            // If the Blogger-feed is set to SHORT, then the content is in the summary-field
            postsumm = ("summary" in entry) ? entry.summary.$t.replace(/<br ?\/?>/ig, " ").replace(/<.*?>/g, "").replace(/[<>]/g, "") : ""; // Get the post summary

            // Reduce post summaries to "numChars" characters.
            // "numChars" is a variable. You determine the value
            if (postsumm.length > numChars) {
                postsumm = (numChars > 0 && numChars !== false) ? postsumm.substring(0, numChars) + '...' : "";
            }

            // Get the post date (e.g: 2012-02-07T12:56:00.000+07:00)
            var _postdate = entry.published.$t,
                _cdyear = _postdate.substring(0, 4), // Take 4 characters from the "postdate" beginning, it means the year (2012)
                _cdmonth = _postdate.substring(5, 7), // Take 2 character 5 step from "postdate" beginning, it mean the month (02)
                _cdday = _postdate.substring(8, 10); // Take 2 character 8 step from "postdate" beginning. it means the day (07)

            // Month array template
            monthnames = (idMode) ? ["Jan", "Feb", "Mar", "Apr", "Mei", "Jun", "Jul", "Agt", "Sep", "Okt", "Nov", "Des"] : ["Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec"];

            // The final product of the post date = (07 Feb 2012) (cdday monthnames cdyear)
            timepub = (showPostDate) ? _cdday + ' ' + monthnames[parseInt(_cdmonth, 10) - 1] + ' ' + _cdyear + ' - ' : '';

            // The final product of the comments count & comments label (10 Komentar) (commentsnum commentsLabel)
            replies = (showComments) ? commentsnum + ' ' + commentsLabel : '';

            // Get the post thumbnails
            postimg = ("media$thumbnail" in entry) ? entry.media$thumbnail.url : imgBlank;

            // Build the post template
            output += '<div class="itemposts">';
            output += '<h6><a href="' + posturl + '" title="' + posttitle + '">' + posttitle + '</a></h6>';
            output += '<div class="iteminside"><a href="' + posturl + '"><img src="' + postimg + '" /></a>';
            output += '<span class="summary">' + postsumm + '</span></div>';
            output += '<div style="clear:both;"></div><div class="itemfoot">' + timepub + replies + '<a class="itemrmore" href="' + posturl + '">' + rmoreText + '</a></div>';
            output += '</div>';

        }

    }

    // Put the whole template above into <div id="results"></div>
    _results.innerHTML = output;
    _create_pagination();

}

// Build the pagination
function _create_pagination() {

    output = "";
    var starter = 0;

  output += ((actualpage > 1) ? '<a title="' + prevText + '" class="prevjson" href="javascript:_init_script(' + (actualpage - 1) + ')">' + prevText + '</a>' : '<span class="prevjson hidden">' + prevText + '</span>') + '<em style="font:inherit;color:inherit;" class="pagernumber">';

    if (pagernum < (maxpage + 1)) {
        for (starter = 1; starter <= pagernum; starter++) {
            output += (starter == actualpage) ? '<span class="actual">' + starter + '</span>' : '<a href="javascript:_init_script(' + starter + ')">' + starter + '</a>';
        }
    } else if (pagernum > (maxpage - 1)) {
        if (actualpage < minpage) {
            for (starter = 1; starter < (maxpage - 2); starter++) {
                output += (starter == actualpage) ? '<span class="actual">' + starter + '</span>' : '<a href="javascript:_init_script(' + starter + ')">' + starter + '</a>';
            }
            output += ' ... ';
            output += '<a href="javascript:_init_script(' + parseInt(pagernum - 1) + ')">' + parseInt(pagernum - 1) + '</a>';
            output += '<a href="javascript:_init_script(' + pagernum + ')">' + pagernum + '</a>';
        } else if (pagernum - (minpage - 1) > actualpage && actualpage > (minpage - 1)) {
            output += '<a href="javascript:_init_script(1)">1</a>';
            output += '<a href="javascript:_init_script(2)">2</a>';
            output += ' ... ';
            for (starter = actualpage - 2; starter <= actualpage + 2; starter++) {
                output += (starter == actualpage) ? '<span class="actual">' + starter + '</span>' : '<a href="javascript:_init_script(' + starter + ')">' + starter + '</a>';
            }
            output += ' ... ';
            output += '<a href="javascript:_init_script(' + (pagernum - 1) + ')">' + parseInt(pagernum - 1) + '</a>';
            output += '<a href="javascript:_init_script(' + pagernum + ')">' + pagernum + '</a>';
        } else {
            output += '<a href="javascript:_init_script(1)">1</a>';
            output += '<a href="javascript:_init_script(2)">2</a>';
            output += ' ... ';
            for (starter = pagernum - (minpage + 1); starter <= pagernum; starter++) {
                output += (starter == actualpage) ? '<span class="actual">' + starter + '</span>' : '<a href="javascript:_init_script(' + starter + ')">' + starter + '</a>';
            }
        }
    }

    output += '</em>' + ((actualpage < starter - 1) ? '<a title="' + nextText + '" class="nextjson" href="javascript:_init_script(' + (actualpage + 1) + ')">' + nextText + '</a>' : '<span class="nextjson hidden">' + nextText + '</span>');

    _pagination.innerHTML = output;
    _totalposts.innerHTML = totalPostLabel + ' ' + postsnum + ' - ' + jumpPageLabel + ' ' + ((actualpage * postPerPage) - (postPerPage - 1)) + ((actualpage < starter - 1) ? ' - ' + (actualpage * postPerPage) : "");

}

// Functions to remove and append the callback script that has been manipulated in the `start-index` parameter
function _init_script(n) {

    var parameter = (n * postPerPage) - (postPerPage - 1), old, s,
        head = document.getElementsByTagName('head')[0],
        url = (sortByLabel) ? siteUrl + '/feeds/posts/summary/-/' + labelSorter + '?start-index=' + parameter : siteUrl + '/feeds/posts/summary?start-index=' + parameter; // Optional: Sort posts by a specific label

    if (firstpage == 1) {
        // Jump to top
        document.documentElement.scrollTop = _results.offsetTop - 30;
        document.body.scrollTop = _results.offsetTop - 30;
        // Remove the old callback script
        old = document.getElementById("TEMPORAL");
        old.parentNode.removeChild(old);
    }

    _results.innerHTML = '<div id="loadingscript">' + loadingText + '</div>';
    _pagination.innerHTML = '';
    _totalposts.innerHTML = '';

    s = document.createElement('script');
    s.type = 'text/javascript';
    s.src = url + '&max-results=' + postPerPage + '&orderby=published&alt=json-in-script&callback=showPagePosts';
    s.id = 'TEMPORAL';
    head.appendChild(s);
    firstpage = 1;
    actualpage = n;

}

// Execute the _init_script() function with parameter as `1` on page load
// So it will show the first page.
window.onload = function() {
    _init_script(1);
};
//]]>
</script>

Answer 1

Thumbnails are reduced-size versions of pictures or videos https://en.wikipedia.org/wiki/Thumbnail

所以需要得到原图

在某些情况下，您在 url 中有大小，例如在 url 末尾的这个

https://lh3.googleusercontent.com/mC69w8Asl2c4y8it_gEb0-2CcwxKWUvz1fs4gOwVfxUkvSN7qAAl41VohsqSdVG-dZs=w720-h110-rw

您可以简单地删除该部分并获得图像的完整尺寸

https://lh3.googleusercontent.com/mC69w8Asl2c4y8it_gEb0-2CcwxKWUvz1fs4gOwVfxUkvSN7qAAl41VohsqSdVG-dZs

update

在你的情况下，你有一个像这样的 url

https://1.bp.blogspot.com/xxxxxxx/s72-c/xxxxx.jpg

你可以改成

https://1.bp.blogspot.com/xxxxxxx/s640/xxxxx.jpg

这篇文章很好地解释了如何使用 List of all the App Engine images service get_serving_url() URI options