1、表格,隔行变色

<!doctype html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Document</title>

    <script>
        window.onload=function(){
            var otab=document.getElementById('tb1')
            // otab.tBodies[0].rows[].cells[]

            var oldColor=''


            for (var i = otab.tBodies[0].rows.length - 1; i >= 0; i--) {
                if(i%2){

                    otab.tBodies[0].rows[i].style.background='red'
                }else{
                    otab.tBodies[0].rows[i].style.background='gray'
                }

                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
                }
            }



        }
    </script>
</head>
<body>
    <!-- table[id='tb1' border="1" width="500">thead>td*3+tbody>(tr>td*3)*3 -->

          
    <table id="tb1" border="1" width="500">
             <thead>
                 <td>ID</td>
                 <td>name</td>
                 <td>age</td>
             </thead>
             <tbody>
                 <tr>
                     <td>1</td>
                     <td>cxiong</td>
                     <td>29</td>
                 </tr>
                 <tr>
                     <td>2</td>
                     <td>mm</td>
                     <td>29</td>
                 </tr>
                 <tr>
                     <td>3</td>
                     <td>dd</td>
                     <td>1</td>
                 </tr>
             </tbody>
         </table>     
</body>
</html>

2、表格的行的添加和删除

<!doctype html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Document</title>

    <script>
        window.onload=function(){
            var otab=document.getElementById('tb1')
            // otab.tBodies[0].rows[].cells[]
            var ob=document.getElementById('b1')
            var oname=document.getElementById('name')
            var oage=document.getElementById('age')

            var id=otab.tBodies[0].rows.length+1

            ob.onclick=function () {
                
                //创建tr元素
                var otr=document.createElement('tr')
                //创建td元素
                var otd=document.createElement('td')
                otd.innerHTML=id++
                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)    

                var otd=document.createElement('td')
                otd.innerHTML='<a href="javascript:">delete</a>'
                otr.appendChild(otd)

                otd.getElementsByTagName('a')[0].onclick=function () {
                    otab.tBodies[0].removeChild(this.parentNode.parentNode)
                }
                //添加元素
                otab.tBodies[0].appendChild(otr)     
            }



        }
    </script>
</head>
<body>
    <!-- table[id='tb1' border="1" width="500">thead>td*3+tbody>(tr>td*3)*3 -->

    name: <input type="text" id="name">
    age: <input type="text" id="age">
    <input type="button" id="b1" value="添加">

    <table id="tb1" border="1" width="500">
             <thead>
                 <td>ID</td>
                 <td>name</td>
                 <td>age</td>
                 <td>action</td>
             </thead>
             <tbody>
                 <tr>
                     <td>1</td>
                     <td>cxiong</td>
                     <td>29</td>
                 </tr>
                 <tr>
                     <td>2</td>
                     <td>mm</td>
                     <td>29</td>
                 </tr>
                 <tr>
                     <td>3</td>
                     <td>dd</td>
                     <td>1</td>
                 </tr>
             </tbody>
         </table>     
</body>
</html>

3、表格高亮、模糊、多关键字搜索

<!doctype html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Document</title>

    <script>
        window.onload=function(){
            var otab=document.getElementById('tb1')
            var ot=document.getElementById('name')
            var ob=document.getElementById('b1')

            ob.onclick=function () {
                // body...
                for (var i = otab.tBodies[0].rows.length - 1; i >= 0; i--) {
                    //转换小写toLowerCase()
                    var arr=ot.value.toLowerCase().split(' ')                    
                    otab.tBodies[0].rows[i].style.background=''
                    // otab.tBodies[0].rows[i].style.display='none'
                    //多关键字、模糊搜索
                    for (var j = arr.length - 1; j >= 0; j--) {                        
                        if (otab.tBodies[0].rows[i].cells[1].innerHTML.toLowerCase().search(arr[j])!=-1) {
                            otab.tBodies[0].rows[i].style.background='yellow'
                            // otab.tBodies[0].rows[i].style.display='block'
                        }
                    }
                }
            }

        }
    </script>
</head>
<body>
    <!-- table[id='tb1' border="1" width="500">thead>td*3+tbody>(tr>td*3)*3 -->

    name: <input type="text" id="name">
    <input type="button" value="search" id="b1">


    <table id="tb1" border="1" width="500">
             <thead>
                 <td>ID</td>
                 <td>name</td>
                 <td>age</td>
                 <td>action</td>
             </thead>
             <tbody>
                 <tr>
                     <td>1</td>
                     <td>cxiong</td>
                     <td>29</td>
                 </tr>
                 <tr>
                     <td>2</td>
                     <td>mm</td>
                     <td>29</td>
                 </tr>
                 <tr>
                     <td>3</td>
                     <td>dd</td>
                     <td>1</td>
                 </tr>
             </tbody>
         </table>     
</body>
</html>

4、表格排序

<!doctype html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Document</title>

    <script>
        window.onload=function(){
            var ou1=document.getElementById('ul1')
            var ou2=document.getElementById('ul2')
            var ob=document.getElementById('b1')

            ob.onclick=function () {
                // body...
                // var oli=ou1.children[0]
                // ou1.removeChild(oli)
                // appendChile,先把元素从原有父级上删掉,添加到新的父级上
                // ou1.appendChild(oli)
                // ou2.appendChild(oli)

                var ali=ou1.getElementsByTagName('li')

                var arr=[]

                for (var i = ali.length - 1; i >= 0; i--) {
                    arr[i]=ali[i]
                }

                //排序:li中的内容innerHTML
                arr.sort(function(li1,li2){
                    return (parseFloat(li1.innerHTML)-parseFloat(li2.innerHTML))
                })

                //根据排序结果,添加li元素
                for (var i = arr.length - 1; i >= 0; i--) {
                    ou1.appendChild(arr[i])
                }

            }

        }
    </script>
</head>
<body>
    <!-- table[id='tb1' border="1" width="500">thead>td*3+tbody>(tr>td*3)*3 -->

    
    <ul id="ul1">
        <li>1</li>
        <li>22</li>
        <li>3</li>
        <li>14</li>
    </ul>
    <input type="button" value="sort" id="b1">
    <ul id="ul2">
        
    </ul>
</body>
</html>

5、表单

<!doctype html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Document</title>

    <script>
        window.onload=function(){
            var of=document.getElementById('f1')
            of.onsubmit=function () {           
                // body...
                alert("submit")
            }
            of.onreset=function(){
                alert("reset")
            }
        }
    </script>
</head>
<body>
    <!-- table[id='tb1' border="1" width="500">thead>td*3+tbody>(tr>td*3)*3 -->

    <form id="f1" action="www.baidu.com" method="get" accept-charset="utf-8">
        用户名: <input type="text" name="user"> <br>
        密码: <input type="text" name="password" value=""><br>
        <input type="submit" value="提交">
        <input type="reset" value="重置">

    </form>
</body>
</html>