Front-end case: Use js to implement table row deletion, sorting, and filtering-JS Tutorial-php.cn

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Front-end case: Use js to implement table row deletion, sorting, and filtering

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Aug 09, 2018 am 10:27 AM

The personnel information table in the following format on the page:

Front-end case: Use js to implement table row deletion, sorting, and filtering

The HTML structure of each row of the table is:

<tr>
    <td><input type="checkbox"></td>
    <td>2</td>
    <td>李斯</td>
    <td>43</td>
    <td>陕西</td></tr>

Assume that the element id of the table is person-list, and the class name of the odd-numbered rows is odd. Please implement the following functions:

1. Select the radio button and the corresponding row will disappear when you click delete;
2. When you click sort, sort each row in the table in ascending order;
3. Click to filter, and the place of birth will become a drop-down box. The option value is the name of the province included in the current table. Select a province to display the personnel information of the corresponding province.

Implementation code:

<!DOCTYPE html><html lang="en"><head>
    <meta charset="UTF-8">
    <title>人员信息表格</title>
    <style type="text/css">
        body {            font-family: "arial", sans-serif;        }
        #person-list {            width: 80%;            margin-left: 10%;            margin-right: 10%;        }
        #person-list thead {            font-weight: bold;        }
        #person-list button {            background-color: transparent;            border: 0;            font-weight: bold;            font-size: small;            padding-left: 0;            color: #6ba9ee;        }
        #person-list thead tr td {            border-bottom: 1px #ccc solid;        }
        #person-list tbody tr td:nth-child(2) {            font-weight: bold;        }
        #person-list tbody tr td {            border-top: 1px #ccc solid;            padding-top: 5px;            padding-bottom: 5px;        }
        #person-list tbody tr:nth-child(2n+1) {            background-color: #eee;        }
    </style>
    <script type="text/javascript">
    window.onload=function(){
    if (!document.getElementsByClassName) {//由于较低版本的IE不识别这个。
        document.getElementsByClassName=function(cls){
            var ret=[];            var eles=document.getElementsByTagName(&#39;*&#39;);            for(var i=0,len=eles.length;i<len;i++){//indexOf()返回的是字母在字符串中的下标，>=0代表存在
                if (eles[i].className===cls /*===是严格等于*/
                    ||eles[i].className.indexOf(cls+&#39;&#39;)>=0//当比较&#39;aaa&#39;和&#39;aaa &#39;时
                    ||eles[i].className.indexOf(&#39;&#39;+cls+&#39;&#39;)>=0///比较&#39;aaa&#39;和&#39;bbb aaa ccc&#39;时
                    ||eles[i].className.indexOf(&#39;&#39;+cls)>=0///比较&#39;aaa&#39;和&#39; aaa&#39;时
                    ) {
                    ret.push(eles[i]);
                }
            }            return ret;
        }
    }        var checks = document.getElementsByTagName(&#39;input&#39;);        var tbody = document.getElementsByTagName("tbody")[0];        var trs = tbody.getElementsByTagName(&#39;tr&#39;);        var remove = document.getElementById("remove");        var sort = document.getElementById("sort");        var select = document.getElementById("select");

        remove.onclick = function(){
            //删除选中行
            for(var i = checks.length-1; i >= 0;i--){ //因为removeChild的时候，长度会变化，所以不能以小于length作为判断条件，应该从后往前扫描
                if(checks[i].checked){
                    tbody.removeChild(checks[i].parentNode.parentNode);
                }
            }            //修改序号
            for(var i = 0;i < trs.length; i++){                var td=trs[i].getElementsByTagName("td")[1];
                td.innerHTML=i+1;
                }
                };

        sort.onclick=function(){
            //循环遍历，后面比它小的就插入到它前面去
            for(var i=0;i < trs.length; i++){                var td=trs[i].getElementsByTagName("td")[3];                for(var j=i;j < trs.length;j++){                    var tdd=trs[j].getElementsByTagName("td")[3];                    if((td.innerHTML - tdd.innerHTML)>0){
                        td.parentNode.parentNode.insertBefore(tdd.parentNode,td.parentNode);
                    }
                }
            }            //修改序号
            for(var i=0;i < trs.length;i++){                var td=trs[i].getElementsByTagName("td")[1];
                td.innerHTML=i+1;
            }
        };

        select.onclick=function(){
            //如果已经筛选过，页面中有下拉框了就不要再执行此函数了。
            if(document.getElementsByTagName(&#39;select&#39;).length>0) return false;            var provinces = [];            //把所有的省份取出来，存放到数组里
            for(var i=0;i < trs.length;i++){                var td=trs[i].getElementsByTagName("td")[4];                var prov=td.innerHTML;
                provinces.push(prov);
            }            //去重
            for(var j=0;j< provinces.length;j++){                for(var k=provinces.length;k>j;k--){ //同理，因为长度会发生变化，所以从后往前算
                    if(provinces[j] === provinces[k]){
                        provinces.splice(k,1);
                    }
                }
            }            //创建selectElem下拉框元素，option为省份
            var selectElem = document.createElement("select");            for(var z = 0;z < provinces.length;z++){                var option=document.createElement("option");
                option.innerHTML=provinces[z];
                option.value=provinces[z];
                selectElem.appendChild(option);
            }            var childNodes=select.parentNode.childNodes;            //去掉籍贯两个字
            for(var x= 0; x< childNodes.length;x++){                if(childNodes[x].nodeType === 3){
                    childNodes[x].parentNode.removeChild(childNodes[x]);
                }
            }            //在按钮之前插入select下拉框
            select.parentNode.insertBefore(selectElem,select);            //监控下拉框的option的点击事件，注意是下拉框的onchange，而不是option的onclick
            selectElem.onchange = function(){
                for(var i =0 ;i< trs.length;i++){
                    trs[i].style.display="none" ;                    if(trs[i].getElementsByTagName("td")[4].innerHTML == selectElem.value){
                        trs[i].style.display = "";
                    }
                }
            };
        };
}    </script></head><body>
    <table id="person-list">
        <thead>
        <tr>
            <td>
                <button id="remove">删除</button>
            </td>
            <td>序号</td>
            <td>姓名</td>
            <td>年龄                <button id="sort">排序</button>
            </td>
            <td>籍贯                <button id="select">筛选</button>
            </td>
        </tr>
        </thead>
        <tbody>
        <tr>
            <td>
                <input type="checkbox"/>
            </td>
            <td>1</td>
            <td>张三</td>
            <td>24</td>
            <td>北京</td>
        </tr>
        <tr>
            <td><input type="checkbox"/>
            </td>
            <td>2</td>
            <td>李斯</td>
            <td>43</td>
            <td>陕西</td>
        </tr>
        <tr>
            <td><input type="checkbox"/>
            </td>
            <td>3</td>
            <td>韩信</td>
            <td>49</td>
            <td>湖北</td>
        </tr>
        <tr>
            <td><input type="checkbox"/>
            </td>
            <td>4</td>
            <td>宋江</td>
            <td>43</td>
            <td>山东</td>
        </tr>
        <tr>
            <td><input type="checkbox"/>
            </td>
            <td>5</td>
            <td>李逵</td>
            <td>38</td>
            <td>青海</td>
        </tr>
        <tr>
            <td><input type="checkbox"/>
            </td>
            <td>6</td>
            <td>林冲</td>
            <td>42</td>
            <td>北京</td>
        </tr>
        </tbody>
    </table></body></html>

Related recommendations:

How to implement all-select, invert-select and delete tables using javascript

Detailed explanation of table operation classes implemented by JS (add, Delete, sort, move up, move down)

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