Question

我正在尝试在桌面上为某些TD着色。但它不能按预期工作，因为它也会为其他TD着色。在这里，我尝试着色第二个TD：

问题似乎是我正在使用colspans和rowpans。

这是我的代码：

$("button").click(function() {
  $('table tr td:nth-child(2)').css("background-color", "red");
});

Here is a fiddle

请注意，这是一个简化的例子。我真正的桌子更大更复杂。仅对包含B和2的所有单元格进行着色是不够的。

Answer 1

$("button").click(function() {
  $('table>thead>tr>td:eq(1),table>tbody>tr>td:eq(1)').css("background-color",  "red");
});

希望这会有所帮助..

Answer 2

这是你要做的事如果我是正确的：

使用<colgroup>代码

HTML：

  <table border="1">
  <colgroup>
  <colgroup>
  <colgroup span="2">
  <colgroup>
  <tr>
    <th scope="colgroup">A</th>
    <th scope="colgroup">B</th>
    <th colspan="2"  scope="colgroup">C</th>
    <th scope="colgroup">D</th>
  </tr>
  <tr>
    <td rowspan="3">1</td>
    <td rowspan="3">2</td>
    <td rowspan="3">3</td>
    <td>3</td>
    <td>4</td>
  </tr>
  <tr>
    <td>3</td>
    <td>4</td>
  </tr>
  <tr>
    <td>3</td>
    <td>4</td>
  </tr>
  <tr>
    <td>3</td>
    <td>4</td>
    <td>3</td>
    <td>4</td>
    <td>4</td>
  </tr>
</table>
<br>
<button class="col1">Col 1</button>
<button class="col2">Col 2</button>
<button class="col3">Col 3</button>
<button class="col4">Col 4</button>
<button class="reload">Reload</button>

JS：

$(".col1").click(function() {
$('colgroup:nth-child(1)').css("background-color", "red");
});

$(".col2").click(function() {
  $('colgroup:nth-child(2)').css("background-color", "red");
});

$(".col3").click(function() {
  $('colgroup:nth-child(3)').css("background-color", "red");
});

$(".col4").click(function() {
  $('colgroup:nth-child(4)').css("background-color", "red");
});

$(".reload").click(function() {
 location.reload();
});

COLGROUP方法小提琴链接： https://jsfiddle.net/devqnyg5/11/

使用<col>代码

HTML：

    <table border="1">
      <col>
      <col>
      <col>
      <col>
      <col> 
        <tr>
            <th>A</th>
            <th>B</th>
            <th colspan="2">C</th>
            <th>D</th>
        </tr>
        <tr>
            <td rowspan="3">1</td>
            <td rowspan="3">2</td>
            <td rowspan="3">3</td>
            <td>3</td>
            <td>4</td>
        </tr>
        <tr>
            <td>3</td>
            <td>4</td>
        </tr>
    </table><br>
    <button class="col1">Col 1</button> 
    <button class="col2">Col 2</button> 
    <button class="col3">Col 3</button> 
    <button class="col4">Col 4</button> 
    <button class="reload">Reload</button>

JS：

 $(".col1").click(function() {
  $('col:nth-child(1)').css("background-color", "red");
});

$(".col2").click(function() {
  $('col:nth-child(2)').css("background-color", "red");
});

$(".col3").click(function() {
  $('col:nth-child(3),col:nth-child(4)').css("background-color", "red");
});

$(".col4").click(function() {
  $('col:nth-child(5)').css("background-color", "red");
});

$(".reload").click(function() {
 location.reload();
});

COL方法小提琴链接： https://jsfiddle.net/devqnyg5/9/

Answer 3

检查它是否包含col-span：

<style>
        body {
            color: #000000;
            font-family:Monospace;
            font-size:13px;
            text-align:center;

            background-color: #b49ebb;
            background-image: url("textures/rainier.jpg");
            background-repeat: no-repeat;
            background-size: cover; 
            margin: 0px;
            overflow: hidden;
        }

        #info {
            position: absolute;
            top: 0px; width: 100%;
            padding: 5px;
        }

        a {

            color: #0080ff;
        }

    </style>
</head>
<body>

    <div id="container"></div>
    <div id="info"><a href="http://therionsolutions.byethost15.com" target="_blank">Therion Solutions</a>The Oasis</div>

    <script src="../build/three.js"></script>

    <script src="js/renderers/Projector.js"></script>
    <script src="js/renderers/CanvasRenderer.js"></script>

    <script src="js/libs/stats.min.js"></script>

    <script>

        var container, stats;
        var camera, scene, renderer;
        var group;
        var mouseX = 0, mouseY = 0;

        var windowHalfX = window.innerWidth / 2;
        var windowHalfY = window.innerHeight / 2;



        init();
        animate();

        function init() {

            container = document.getElementById( 'container' );

            camera = new THREE.PerspectiveCamera( 60, window.innerWidth / window.innerHeight, 1, 2000 );
            camera.position.z = 500;

            scene = new THREE.Scene();

            group = new THREE.Group();
            scene.add( group );



            // earth

            var loader = new THREE.TextureLoader();
            loader.load( 'textures/land_ocean_ice_cloud_2048o.jpg', function ( texture ) {

                var geometry = new THREE.SphereGeometry( 200, 20, 20 );

                var material = new THREE.MeshBasicMaterial( { map: texture, overdraw: 0.5 } );
                var mesh = new THREE.Mesh( geometry, material );
                group.add( mesh );

            } );


            //Background


            // shadow

            var canvas = document.createElement( 'canvas' );
            canvas.width = 128;
            canvas.height = 128;

            var context = canvas.getContext( '2d' );
            var gradient = context.createRadialGradient(
                canvas.width / 2,
                canvas.height / 2,
                0,
                canvas.width / 2,
                canvas.height / 2,
                canvas.width / 2
            );
            gradient.addColorStop( 0.1, 'rgba(210,210,210,1)' );
            gradient.addColorStop( 1, 'rgba(255,255,255,1)' );

            context.fillStyle = gradient;
            context.fillRect( 0, 0, canvas.width, canvas.height );

            var texture = new THREE.CanvasTexture( canvas );

            var geometry = new THREE.PlaneBufferGeometry( 300, 300, 3, 3 );
            var material = new THREE.MeshBasicMaterial( { map: texture, overdraw: 0.5 } );

            var mesh = new THREE.Mesh( geometry, material );
            mesh.position.y = - 250;
            mesh.rotation.x = - Math.PI / 2;
            group.add( mesh );

            renderer = new THREE.CanvasRenderer();
            renderer.setClearColor(0xffffff);
            renderer.setPixelRatio( window.devicePixelRatio );
            renderer.setSize( window.innerWidth, window.innerHeight );
            container.appendChild( renderer.domElement );


            stats = new Stats();
            container.appendChild( stats.dom );

            document.addEventListener( 'mousemove', onDocumentMouseMove, false );

            //

            window.addEventListener( 'resize', onWindowResize, false );

        }

        function onWindowResize() {

            windowHalfX = window.innerWidth / 2;
            windowHalfY = window.innerHeight / 2;

            camera.aspect = window.innerWidth / window.innerHeight;
            camera.updateProjectionMatrix();

            renderer.setSize( window.innerWidth, window.innerHeight );

        }

        function onDocumentMouseMove( event ) {

            mouseX = ( event.clientX - windowHalfX );
            mouseY = ( event.clientY - windowHalfY );

        }

        //

        function animate() {

            requestAnimationFrame( animate );

            render();
            stats.update();

        }

        function render() {

            camera.position.x += ( mouseX - camera.position.x ) * 0.05;
            camera.position.y += ( - mouseY - camera.position.y ) * 0.05;
            camera.lookAt( scene.position );

            group.rotation.y -= 0.005;

            renderer.render( scene, camera );

        }


    </script>

在带有rowspan和colspan的表中的颜色TD

3 个答案: