Community Learn Tools Library Leisure
search
English
Home > Web Front-end > JS Tutorial > About how to use dropload.js

About how to use dropload.js

一个新手
Release： 2017-10-20 11:15:10
Original
16612 people have browsed it

The first step is to download the dropload plug-in. The official document of the dropload plug-in download address is: https://github.com/ximan/dropload
The second step is to download the dropload.css in the downloaded dropload plug-in, dropload. The min.js file is introduced into the page. Note Also introduce Jquery1.7 or Zepto. Choose one of the two, do not quote both at the same time, because dropload is based on jquery Implementation
The third step is to put the following code at the bottom of the page. Pay attention to the bottom, otherwise the dropload plug-in will not be able to obtain the height.

**基本代码结构**//#content为某个p的id  var dropload = $('#content').dropload({   
//scrollArea很关键，要不然加载更多不起作用  scrollArea : window,  
domUp : {  
    domClass   : 'dropload-up',  
    domRefresh : &#39;<p class="dropload-refresh">↓下拉刷新</p>&#39;,  
    domUpdate  : &#39;<p class="dropload-update">↑释放更新</p>&#39;,  
    domLoad    : &#39;<p class="dropload-load"><span class="loading"></span>加载中...</p>&#39;  },  
domDown : {  
    domClass   : &#39;dropload-down&#39;,  
    domRefresh : &#39;<p class="dropload-refresh">↑上拉加载更多</p>&#39;,  
    domLoad    : &#39;<p class="dropload-load"><span class="loading"></span>加载中...</p>&#39;,  
    domNoData  : &#39;<p class="dropload-noData">暂无数据</p>&#39;  
   },  
loadUpFn : function(me){  
        //下拉刷新需要调用的函数  
        alert("下拉刷新需要调用的函数");  
        //重置下拉刷新  
        me.resetload();      
},  
loadDownFn : function(me){  
        //上拉加载更多需要调用的函数  
        alert("上拉加载更多需要调用的函数");  
        //定时器函数,为了看出上拉加载更多效果  
            setTimeout(function(){  
                // 每次数据加载完，必须重置  
                    me.resetload();  
                },1000);  
           }  
});
Copy after login

Some complete examples on demand Just check it

Example 1, load the bottom

<script>$(function(){
    // 页数
    var page = 0;    // 每页展示5个
    var size = 5;    // dropload调用
    $(&#39;.content&#39;).dropload({
        scrollArea : window,
        loadDownFn : function(me){
            page++;            // 拼接HTML
            var result = &#39;&#39;;
            $.ajax({
                type: &#39;GET&#39;,
                url: &#39;http://ons.me/tools/dropload/json.php?page=&#39;+page+&#39;&size=&#39;+size,//配合后台接口
                dataType: &#39;json&#39;,
                success: function(data){
                    var arrLen = data.length;                    
                        if(arrLen > 0){                        
                            for(var i=0; i<arrLen; i++){
                            result +=   &#39;<a class="item opacity" href="&#39;+data[i].link+&#39;">&#39;
                                            +&#39;<img src="&#39;+data[i].pic+&#39;" alt="">&#39;
                                            +&#39;<h3>&#39;+data[i].title+&#39;</h3>&#39;
                                            +&#39;<span class="date">&#39;+data[i].date+&#39;</span>&#39;
                                        +&#39;</a>&#39;;
                        }                    // 如果没有数据
                    }else{                        // 锁定
                        me.lock();                        // 无数据
                        me.noData();
                    }                    // 为了测试，延迟1秒加载
                    setTimeout(function(){
                        // 插入数据到页面，放到最后面
                        $(&#39;.lists&#39;).append(result);                        // 每次数据插入，必须重置
                        me.resetload();
                    },1000);
                },
                error: function(xhr, type){
                    alert(&#39;Ajax error!&#39;);                    // 即使加载出错，也得重置
                    me.resetload();
                }
            });
        }
    });
});</script>
Copy after login

Example 2, load the top, bottom

<script>
$(function(){
    // 页数
    var page = 0;    // 每页展示10个
    var size = 10;    // dropload
    $(&#39;.content&#39;).dropload({
        scrollArea : window,
        domUp : {
            domClass   : &#39;dropload-up&#39;,
            domRefresh : &#39;<p class="dropload-refresh">↓下拉刷新-自定义内容</p>&#39;,
            domUpdate  : &#39;<p class="dropload-update">↑释放更新-自定义内容</p>&#39;,
            domLoad    : &#39;<p class="dropload-load"><span class="loading"></span>加载中-自定义内容...</p>&#39;
        },
        domDown : {
            domClass   : &#39;dropload-down&#39;,
            domRefresh : &#39;<p class="dropload-refresh">↑上拉加载更多-自定义内容</p>&#39;,
            domLoad    : &#39;<p class="dropload-load"><span class="loading"></span>加载中-自定义内容...</p>&#39;,
            domNoData  : &#39;<p class="dropload-noData">暂无数据-自定义内容</p>&#39;
        },
        loadUpFn : function(me){
            $.ajax({
                type: &#39;GET&#39;,
                url: &#39;json/update.json&#39;,
                dataType: &#39;json&#39;,
                success: function(data){
                    var result = &#39;&#39;;                    
                    for(var i = 0; i < data.lists.length; i++){
                        result +=   &#39;<a class="item opacity" href="&#39;+data.lists[i].link+&#39;">&#39;
                                        +&#39;<img src="&#39;+data.lists[i].pic+&#39;" alt="">&#39;
                                        +&#39;<h3>&#39;+data.lists[i].title+&#39;</h3>&#39;
                                        +&#39;<span class="date">&#39;+data.lists[i].date+&#39;</span>&#39;
                                    +&#39;</a>&#39;;
                    }                    // 为了测试，延迟1秒加载
                    setTimeout(function(){
                        $(&#39;.lists&#39;).html(result);                        // 每次数据加载完，必须重置
                        me.resetload();                        // 重置页数，重新获取loadDownFn的数据
                        page = 0;                        // 解锁loadDownFn里锁定的情况
                        me.unlock();                        me.noData(false);
                    },1000);
                },
                error: function(xhr, type){
                    alert(&#39;Ajax error!&#39;);                    // 即使加载出错，也得重置
                    me.resetload();
                }
            });
        },
        loadDownFn : function(me){
            page++;            // 拼接HTML
            var result = &#39;&#39;;
            $.ajax({
                type: &#39;GET&#39;,
                url: &#39;http://ons.me/tools/dropload/json.php?page=&#39;+page+&#39;&size=&#39;+size,
                dataType: &#39;json&#39;,
                success: function(data){
                    var arrLen = data.length;                    
                    if(arrLen > 0){                        for(var i=0; i<arrLen; i++){
                            result +=   &#39;<a class="item opacity" href="&#39;+data[i].link+&#39;">&#39;
                                            +&#39;<img src="&#39;+data[i].pic+&#39;" alt="">&#39;
                                            +&#39;<h3>&#39;+data[i].title+&#39;</h3>&#39;
                                            +&#39;<span class="date">&#39;+data[i].date+&#39;</span>&#39;
                                        +&#39;</a>&#39;;
                        }                    // 如果没有数据
                    }else{                        // 锁定
                        me.lock();                        // 无数据
                        me.noData();
                    }                    // 为了测试，延迟1秒加载
                    setTimeout(function(){
                        // 插入数据到页面，放到最后面
                        $(&#39;.lists&#39;).append(result);                        // 每次数据插入，必须重置
                        me.resetload();
                    },1000);
                },
                error: function(xhr, type){
                    alert(&#39;Ajax error!&#39;);                    // 即使加载出错，也得重置
                    me.resetload();
                }
            });
        },
        threshold : 50
    });
});
</script>
Copy after login

Example 3, load multiple times

$(function(){
        //利用此写法，可以限制多次加载的个数。
    var timer;

    $(&#39;.header .ipt&#39;).on(&#39;input&#39;,function(){
        var _length = $(this).val();        // 如果输入值不是数字或者是空，就跳出
        if(isNaN(_length) || _length === &#39;&#39;){            
        return false;
        }
        clearTimeout(timer);
        timer = setTimeout(function(){//也可不用定时器
            // 清空内容
            $(&#39;.lists&#39;).html(&#39;&#39;);
            $(&#39;.dropload-down&#39;).remove();            
            var counter = 0;            // 每页展示4个
            var num = 4;            
            var pageStart = 0,pageEnd = 0;            // dropload
            $(&#39;.content&#39;).dropload({
                scrollArea : window,
                loadDownFn : function(me){
                    $.ajax({
                        type: &#39;GET&#39;,
                        url: &#39;json/more.json&#39;,
                        dataType: &#39;json&#39;,
                        success: function(data){
                            var result = &#39;&#39;;
                            counter++;
                            pageEnd = num * counter;
                            pageStart = pageEnd - num;                            
                            .for(var i = pageStart; i < pageEnd; i++){
                                result +=   &#39;<a class="item opacity" href="&#39;+data.lists[i].link+&#39;">&#39;
                                                +&#39;<img src="&#39;+data.lists[i].pic+&#39;" alt="">&#39;
                                                +&#39;<h3>&#39;+data.lists[i].title+&#39;</h3>&#39;
                                                +&#39;<span class="date">&#39;+data.lists[i].date+&#39;</span>&#39;
                                            +&#39;</a>&#39;;                                
                                            if((i + 1) >= _length || (i + 1) >= data.lists.length){                                    // 锁定
                                    me.lock();                                    // 无数据
                                    me.noData();                                    
                                    break;
                                }
                            }                            // 为了测试，延迟1秒加载
                            setTimeout(function(){
                                $(&#39;.lists&#39;).append(result);                                // 每次数据加载完，必须重置
                                me.resetload();
                            },1000);
                        },
                        error: function(xhr, type){
                            alert(&#39;Ajax error!&#39;);                            // 即使加载出错，也得重置
                            me.resetload();
                        }
                    });
                }
            });
        },500);
    });
Copy after login

Example 4 , fixed layout, loading top and bottom

$(function(){
    // 按钮操作
    $(&#39;.header .btn&#39;).on(&#39;click&#39;,function(){
        var $this = $(this);        
        if(!!$this.hasClass(&#39;lock&#39;)){
            $this.attr(&#39;class&#39;,&#39;btn unlock&#39;);
            $this.text(&#39;解锁&#39;);            // 锁定
            dropload.lock();
            $(&#39;.dropload-down&#39;).hide();
        }else{
            $this.attr(&#39;class&#39;,&#39;btn lock&#39;);
            $this.text(&#39;锁定&#39;);            // 解锁
            dropload.unlock();
            $(&#39;.dropload-down&#39;).show();
        }
    });    // dropload
    var dropload = $(&#39;.inner&#39;).dropload({
        domUp : {
            domClass   : &#39;dropload-up&#39;,
            domRefresh : &#39;<p class="dropload-refresh">↓下拉刷新</p>&#39;,
            domUpdate  : &#39;<p class="dropload-update">↑释放更新</p>&#39;,
            domLoad    : &#39;<p class="dropload-load"><span class="loading"></span>加载中...</p>&#39;
        },
        domDown : {
            domClass   : &#39;dropload-down&#39;,
            domRefresh : &#39;<p class="dropload-refresh">↑上拉加载更多</p>&#39;,
            domLoad    : &#39;<p class="dropload-load"><span class="loading"></span>加载中...</p>&#39;,
            domNoData  : &#39;<p class="dropload-noData">暂无数据</p>&#39;
        },
        loadUpFn : function(me){
            $.ajax({
                type: &#39;GET&#39;,
                url: &#39;json/update.json&#39;,
                dataType: &#39;json&#39;,
                success: function(data){
                    var result = &#39;&#39;;                    
                    for(var i = 0; i < data.lists.length; i++){
                        result +=   &#39;<a class="item opacity" href="&#39;+data.lists[i].link+&#39;">&#39;
                                        +&#39;<img src="&#39;+data.lists[i].pic+&#39;" alt="">&#39;
                                        +&#39;<h3>&#39;+data.lists[i].title+&#39;</h3>&#39;
                                        +&#39;<span class="date">&#39;+data.lists[i].date+&#39;</span>&#39;
                                    +&#39;</a>&#39;;
                    }                    // 为了测试，延迟1秒加载
                    setTimeout(function(){
                        $(&#39;.lists&#39;).html(result);                        // 每次数据加载完，必须重置
                        dropload.resetload();
                    },1000);
                },
                error: function(xhr, type){
                    alert(&#39;Ajax error!&#39;);                    // 即使加载出错，也得重置
                    dropload.resetload();
                }
            });
        },
        loadDownFn : function(me){
            $.ajax({
                type: &#39;GET&#39;,
                url: &#39;json/more.json&#39;,
                dataType: &#39;json&#39;,
                success: function(data){
                    var result = &#39;&#39;;                    
                    for(var i = 0; i < data.lists.length; i++){
                        result +=   &#39;<a class="item opacity" href="&#39;+data.lists[i].link+&#39;">&#39;
                                        +&#39;<img src="&#39;+data.lists[i].pic+&#39;" alt="">&#39;
                                        +&#39;<h3>&#39;+data.lists[i].title+&#39;</h3>&#39;
                                        +&#39;<span class="date">&#39;+data.lists[i].date+&#39;</span>&#39;
                                    +&#39;</a>&#39;;
                    }                    // 为了测试，延迟1秒加载
                    setTimeout(function(){
                        $(&#39;.lists&#39;).append(result);                        // 每次数据加载完，必须重置
                        dropload.resetload();
                    },1000);
                },
                error: function(xhr, type){
                    alert(&#39;Ajax error!&#39;);                    // 即使加载出错，也得重置
                    dropload.resetload();
                }
            });
        }
    });
});
Copy after login

The above is the detailed content of About how to use dropload.js. For more information, please follow other related articles on the PHP Chinese website!

Related labels：
javascript Instructions
source：php.cn
Previous article：Understanding of \b in regular expressions Next article：How to use asynchronous search jquery select plug-in
Statement of this Website
The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn
Latest Articles by Author
Latest Issues
function_exists() cannot determine the custom function Function test () {return true;} if (function_exists ('test')) {echo "test is function...
From 2024-04-29 11:01:01
0
3
2060
How to display the mobile version of Google Chrome Hello teacher, how can I change Google Chrome into a mobile version?
From 2024-04-23 00:22:19
0
11
2215
The child window operates the parent window, but the output does not respond. The first two sentences are executable, but the last sentence cannot be implemented.
From 2024-04-19 15:37:47
0
1
1870
There is no output in the parent window document.onclick = function(){ window.opener.document.write('I am the output of the child ...
From 2024-04-18 23:52:34
0
1
1753
Where is the courseware about CSS mind mapping? Courseware
From 2024-04-16 10:10:18
0
0
1779
Related Topics
More>
Popular Recommendations
Popular Tutorials
More>
Related Tutorials
Popular Recommendations
Latest courses
Latest Downloads
More>
Web Effects
Website Source Code
Website Materials
Front End Template