在动态HTML表上删除,编辑和保存行功能

时间:2016-09-28 14:15:51

标签: javascript php html database dynamic

我有一个从数据库导入数据的HTML表。目前,我底部有4个按钮。添加行,编辑,保存和删除。我有"添加行"按钮工作正常。所以我的问题是两部分问题......

首先,如何让删除功能正常工作?

其次,如何让编辑和保存功能开始工作?

HTML / PHP代码:

<table id="html_master">
<thead>
    <tr>
    <td>MR_ID</td>
    <td>MR_Name</td>
    <td>Buyer_ID</td>
    <td>MR_POC_N</td>
    <td>MR_POC_E</td>
    <td>MR_POC_P</td>
    <td>Select</td>
    </tr>
</thead>
<tbody>

<?php
    foreach ($dbh->query($sql) as $rows){
    ?>
    <tr>
        <td id="mr_id"><?php echo intval ($rows['MR_ID'])?></td>
        <td id="mr_name"><?php echo $rows['MR_Name']?></td>
        <td id="buyer_id"><?php echo $rows['Buyer_ID']?></td>
        <td id="poc_n"><?php echo $rows['MR_POC_N']?></td>     
        <td id="poc_e"><?php echo $rows['MR_POC_E']?></td>
        <td id="poc_p"><?php echo $rows['MR_POC_P']?></td>
        <td align="center"><input type="checkbox" name="check" value="checked"></td>
    </tr>
 <?php
  }
 ?>
</tbody>
</table>

        <input type="button" class="add" value="Add Row" onclick="insRow('html_master')">
        <input type="button" id="edit" value="Edit">
        <input type="button" id="save" value="Save"> 
        <input type="button" id="delRow" value="Delete" onclick="deleteRow('html_master')">

Javascript代码:

// ----- Deletes row -----
function deleteRow(tableID) {
    try {
    var table = document.getElementById(tableID);
    var rowCount = table.rows.length;

    for(var i=0; i<rowCount; i++) {
        var row = table.rows[i];
        var chkbox = row.cells[0].childNodes[0];
        if(null != chkbox && true == chkbox.checked) {
            table.deleteRow(i);
            rowCount--;
            i--;
        }
    }
    }catch(e) {
        alert(e);
    }
}

// ----- Add Row -----

function insRow(tableID) {

    var table = document.getElementById(tableID);

    var rowCount = table.rows.length;
    var row = table.insertRow(rowCount);

    var cell1 = row.insertCell(0);
    cell1.innerHTML = rowCount;

    var cell2 = row.insertCell(1);
    var element2 = document.createElement("input");
    element2.type = "text";
    element2.name = "txtbox[]";
    cell2.appendChild(element2);

    var cell3 = row.insertCell(2);
    var element3 = document.createElement("input");
    element3.type = "text";
    element3.name = "txtbox[]";
    cell3.appendChild(element3);

    var cell4 = row.insertCell(3);
    var element4 = document.createElement("input");
    element4.type = "text";
    element4.name = "txtbox[]";
    cell4.appendChild(element4);

    var cell5 = row.insertCell(4);
    var element5 = document.createElement("input");
    element5.type = "text";
    element5.name = "txtbox[]";
    cell5.appendChild(element5);

    var cell6 = row.insertCell(5);
    var element6 = document.createElement("input");
    element6.type = "text";
    element6.name = "txtbox[]";
    cell6.appendChild(element6);

    var cell7 = row.insertCell(6);
    var element7 = document.createElement("input");
    element7.type = "checkbox";
    element7.name="chkbox[]";
    cell7.appendChild(element7);

    }

1 个答案:

答案 0 :(得分:1)

在快速模型测试中,以下工作正常,并删除选中复选框的行。

使用querySelectorAll您可以非常具体地了解您要查找的内容 - 在下面的代码中,请注意它正在查找当前类型为input的所有checkbox元素checked - 一旦你拥有了那个节点列表,就很容易迭代并执行你需要的任何动作 - 在这种情况下删除它的父行。

function deleteRow(id){
    var tbl=document.getElementById(id);
    var col=tbl.querySelectorAll('input[type="checkbox"]:checked');
    if( col ){
        for( var n in col )if( col[ n ].nodeType==1 ){
            try {
                var tr=col[ n ].parentNode.parentNode;
                var tbody=tr.parentNode;
                tbody.removeChild( tr );
            }catch( err ){
                console.warn(err);
                continue;
            }
        }
    }
}

如果您有如下功能:

function createNode( type, attribs, parent ) {
    /*
        @type - the html element type you wish to add. By default if you use 'null' as the value it will insert a div
        @attribs - Object literal of param:value pairs to add as attributes to the new html node
        @parent - the parent html element to which the new node will be added.

        This returns the new node. The parent can also be another call to `createNode`
    */
    try{
        var el = ( typeof( type )=='undefined' || type==null ) ? document.createElement( 'div' ) : document.createElement( type );
        for( var n in attribs ) if( attribs.hasOwnProperty( n ) && n!=='innerHTML' ) el.setAttribute( n, attribs[ n ] );
        if( attribs.hasOwnProperty('innerHTML') ) el.innerHTML=attribs.innerHTML;
        if( parent!=null ) typeof( parent )=='object' ? parent.appendChild( el ) : document.getElementById( parent ).appendChild( el );
        return el;

    }catch(err){
        console.warn('createNode: %s, %o, %o',type, attribs, parent);
    }
}

然后您可以简化insRow函数,如:

function insRow(id){

    var tbl=document.getElementById( id );
    var tbody = tbl.querySelectorAll('tbody')[0];
    var rows = tbody.querySelectorAll('tr');

    var row = createNode( 'tr',{},tbody );
    var td = createNode('td',{ innerHTML:rows.length },row );

    /* add 5 table cells with textfields */
    for( var i=0; i < 5; i++ ){
        createNode('input',{ type:'text',name:'txtbox[]'},createNode('td',{},row ) );
    }
    /* Add table cell with checkbox */
    createNode('input',{ type:'checkbox',name:'chkbox[]'},createNode('td',{},row ) );
}

以为我会在那里添加它,因为这是一个艰难的工作日,所以一点点光编码帮助我放松 - 希望你会发现createNode功能有用。