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DOM基础3

2024-08-20 06:40:41   226人阅读

隔行变色

<!DOCTYPE html>
<html>
<head lang="en">
    <meta charset="UTF-8">
    <title></title>
    <script>
        window.onload=function(){
            var oTab=document.getElementById(‘table1‘);

            for(var i=0;i<oTab.tBodies[0].rows.length;i++){


                if(i%2){
                    oTab.tBodies[0].rows[i].style.background=‘‘;
                }
                else{
                    oTab.tBodies[0].rows[i].style.background=‘#ccc‘;
                }
            }
        }
    </script>
</head>
<body>
<table id="table1" border="1" width="300" align="center">
    <thead>
    <td>id</td>
    <td>姓名</td>
    <td>年龄</td>
    </thead>
    <tbody>
    <tr>
        <td>1</td>
        <td>张三</td>
        <td>25</td>
    </tr>
    <tr>
        <td>2</td>
        <td>李四</td>
        <td>20</td>
    </tr>
    <tr>
        <td>3</td>
        <td>王五</td>
        <td>53</td>
    </tr>
    <tr>
        <td>4</td>
        <td>张伟</td>
        <td>23</td>
    </tr>

    </tbody>
</table>
</body>
</html>

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<!DOCTYPE html>
<html>
<head lang="en">
    <meta charset="UTF-8">
    <title></title>
    <script>
        window.onload=function(){
            var oTab=document.getElementById(‘table1‘);
            var oldColor=‘‘;
           for(var i=0;i<oTab.tBodies[0].rows.length;i++){
               oTab.tBodies[0].rows[i].onmouseover=function(){
                   oldColor=this.style.background;
                   this.style.background=‘green‘;
               }
               oTab.tBodies[0].rows[i].onmouseout=function(){
                   this.style.background=oldColor;
               }

               if(i%2){
                   oTab.tBodies[0].rows[i].style.background=‘‘;
               }
               else{
                   oTab.tBodies[0].rows[i].style.background=‘#ccc‘;
               }
           }
        }
    </script>
</head>
<body>
<table id="table1" border="1" width="300" align="center">
    <thead>
    <td>id</td>
    <td>姓名</td>
    <td>年龄</td>
    </thead>
    <tbody>
    <tr>
        <td>1</td>
        <td>张三</td>
        <td>25</td>
    </tr>
    <tr>
        <td>2</td>
        <td>李四</td>
        <td>20</td>
    </tr>
    <tr>
        <td>3</td>
        <td>王五</td>
        <td>53</td>
    </tr>
    <tr>
        <td>4</td>
        <td>张伟</td>
        <td>23</td>
    </tr>

    </tbody>
</table>
</body>
</html>

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添加一行

<!DOCTYPE HTML>
<html>
<head>
<meta charset="utf-8">
<title>无标题文档</title>
<script>
window.onload=function ()
{
    var oTab=document.getElementById(‘tab1‘);
    
    var oBtn=document.getElementById(‘btn1‘);
    var oName=document.getElementById(‘name‘);
    var oAge=document.getElementById(‘age‘);
    
    oBtn.onclick=function ()
    {
        var oTr=document.createElement(‘tr‘);
        
        var oTd=document.createElement(‘td‘);
        oTd.innerHTML=oTab.tBodies[0].rows.length+1;    //?
        oTr.appendChild(oTd);
        
        var oTd=document.createElement(‘td‘);
        oTd.innerHTML=oName.value;
        oTr.appendChild(oTd);
        
        var oTd=document.createElement(‘td‘);
        oTd.innerHTML=oAge.value
        oTr.appendChild(oTd);
        
        oTab.tBodies[0].appendChild(oTr);
    };
};
</script>
</head>

<body>
姓名：<input id="name" type="text" />
年龄：<input id="age" type="text" />
<input id="btn1" type="button" value="添加" />
<table id="tab1" border="1" width="500">
    <thead>
        <td>ID</td>
        <td>姓名</td>
        <td>年龄</td>
    </thead>
    <tbody>
        <tr>
            <td>1</td>
            <td>Blue</td>
            <td>27</td>
        </tr>
        <tr>
            <td>2</td>
            <td>张三</td>
            <td>23</td>
        </tr>
        <tr>
            <td>3</td>
            <td>李四</td>
            <td>28</td>
        </tr>
        <tr>
            <td>4</td>
            <td>王五</td>
            <td>25</td>
        </tr>
        <tr>
            <td>5</td>
            <td>张伟</td>
            <td>24</td>
        </tr>
    </tbody>
</table>
</body>
</html>

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DOM基础3


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