Javascript 如何为flickr提要构建一个Pin-It按钮？

我的网站上有一个flickr提要，我想在每张图片下添加一个Pinterest“pinit”按钮

下面是提要脚本：

<script>
    $.getJSON('http://api.flickr.com/services/feeds/photoset.gne?set=72157647581330595&nsid=127682596@N07&lang=en-us&format=json&jsoncallback=?', function(data) {
    $.each(data.items, function(i,item) {
    var large = (item.media.m).replace('_m.jpg', '_b.jpg');

    if(i <= 20){
    $('#list').append('<li class="picture"><a class="slide-img" data-lightbox="engagement" href="' + large + '"><img src="' + large + '"/></a></li>');

    }
    });
    });
    </script>

问题1-如何在一个

中替换多个字符。替换
方法？

定义好之后，我的下一次代码转换如下：

<script>
        $.getJSON('http://api.flickr.com/services/feeds/photoset.gne?set=72157647581330595&nsid=127682596@N07&lang=en-us&format=json&jsoncallback=?', function(data) {
        $.each(data.items, function(i,item) {
        var large = (item.media.m).replace('_m.jpg', '_b.jpg');

        if(i <= 20){
        $('#list').append('<li class="picture"><a class="slide-img" data-lightbox="engagement" href="' + large + '"><img src="' + large + '"/></a></li><br><a href="http://www.pinterest.com/pin/create/button/?url=http%3A%2F%2Fwww.pushpinevents.com&media='+link+'" data-pin-do="buttonPin" data-pin-config="beside">Pin It!</a>');

        }
        });
        });
        </script>


$.getJSON（'http://api.flickr.com/services/feeds/photoset.gne?set=72157647581330595&nsid=127682596@N07&lang=en us&format=json&jsoncallback=？'，函数（数据）{
$.each（data.items，function（i，item）{
var large=（item.media.m）.replace（'u m.jpg'，'u b.jpg'）；
如果（ii）最终使用了
var-encodedUrl=encodeURIComponent（大）；
哪一个成功了

这给我留下了

$.getJSON('http://api.flickr.com/services/feeds/photoset.gne?set=72157647581330595&nsid=127682596@N07&lang=en-us&format=json&jsoncallback=?', function(data) {
    $.each(data.items, function(i,item) {
    var large = (item.media.m).replace('_m.jpg', '_b.jpg');
    var encodedUrl = encodeURIComponent(large);
    console.log(encodedUrl);


    if(i <= 20){


    }$('#list').append('<li class="picture"><span class="round"><a data-lightbox="engagement" href="' + large + '"><img src="' + large + '"/></a><br><a class="pinit round" target="_blank" href="http://www.pinterest.com/pin/create/button/?url=http%3A%2F%2Fwww.pushpinevents.com&media='+encodedUrl+'&description=%40PushPin%20Events" data-pin-do="buttonPin" data-pin-config="beside"><i class="fa fa-pinterest"></i> Pin it</a></span></li>');
    });
    });

$.getJSON（'http://api.flickr.com/services/feeds/photoset.gne?set=72157647581330595&nsid=127682596@N07&lang=en us&format=json&jsoncallback=？'，函数（数据）{
$.each（data.items，function（i，item）{
var large=（item.media.m）.replace（'u m.jpg'，'u b.jpg'）；
var encodedUrl=encodeURIComponent（大）；
console.log（encodedUrl）；
如果（i）
<script>
        $.getJSON('http://api.flickr.com/services/feeds/photoset.gne?set=72157647581330595&nsid=127682596@N07&lang=en-us&format=json&jsoncallback=?', function(data) {
        $.each(data.items, function(i,item) {
        var large = (item.media.m).replace('_m.jpg', '_b.jpg');

        if(i <= 20){
        $('#list').append('<li class="picture"><a class="slide-img" data-lightbox="engagement" href="' + large + '"><img src="' + large + '"/></a></li><br><a href="http://www.pinterest.com/pin/create/button/?url=http%3A%2F%2Fwww.pushpinevents.com&media='+link+'" data-pin-do="buttonPin" data-pin-config="beside">Pin It!</a>');

        }
        });
        });
        </script>

$.getJSON('http://api.flickr.com/services/feeds/photoset.gne?set=72157647581330595&nsid=127682596@N07&lang=en-us&format=json&jsoncallback=?', function(data) {
    $.each(data.items, function(i,item) {
    var large = (item.media.m).replace('_m.jpg', '_b.jpg');
    var encodedUrl = encodeURIComponent(large);
    console.log(encodedUrl);


    if(i <= 20){


    }$('#list').append('<li class="picture"><span class="round"><a data-lightbox="engagement" href="' + large + '"><img src="' + large + '"/></a><br><a class="pinit round" target="_blank" href="http://www.pinterest.com/pin/create/button/?url=http%3A%2F%2Fwww.pushpinevents.com&media='+encodedUrl+'&description=%40PushPin%20Events" data-pin-do="buttonPin" data-pin-config="beside"><i class="fa fa-pinterest"></i> Pin it</a></span></li>');
    });
    });