dom綁定事件操做

時間  2019-11-11
標籤 dom 綁定 事件 欄目 HTML 简体版
原文   原文鏈接

s7.htmlhtml

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
</head>
<style>
    #test{
        background-color: red;
        width:300px;
        height:400px;
    }
</style>
<body>
<div id="test">
    sdsd
</div>
<script>
    var mydiv=document.getElementById('test');
    mydiv.onclick=function () {
        console.log('wwwwwwwwwwwwww')
    }
</script>
</body>
</html>
行爲 樣式相分離app

 

S8.htmldom

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
</head>
<body>
<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
</head>
<body>
    <input type="button" onclick="AddEle1();" value="+">
    <input type="button" onclick="AddEle2();" value="+">
    <div id="i1">
        <p><input type="text"></p>
        <!--<hr/> 分隔線標籤-->
    </div>
    <script>
        function AddEle1() {
            //建立一個標籤
            //將標籤添加到i1裏面
            var tag="<p><input type='text'/></p>";
            //注意：第一個參數只能是'beforeBegin'、 'afterBegin'、 'beforeEnd'、 'afterEnd'
            document.getElementById('i1').insertAdjacentHTML("afterEnd",tag);
        }
        function AddEle2() {
            //建立一個標籤
            //將標籤添加到i1裏面
            var tag=document.createElement('input'); //建立一個input標籤
            tag.setAttribute('type','text')
            tag.style.fontSize="16px";
            tag.style.color='red';

            var p=document.createElement('p'); //建立p標籤
            p.appendChild(tag)
            document.getElementById('i1').appendChild(p) //添加p標籤
        }
    </script>
</body>
</html>
</body>
</html>ide

 

 

S9.html函數

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
</head>
<body>
    <form id='f1' action="http://www.baidu.com">
        <input type="text">
        <input type="submit" value="提交">
        <a onclick="submitForm();">提交1</a>

    </form>
    <script>
        function submitForm() {
            document.getElementById('f1').submit();
            alert(123);
            var v=confirm('肯定?');
            console.log(v)
        }
        var obj=setInterval(function(){
            console.log(1);
        },1000)
        clearInterval(obj);


    </script>
</body>
</html>


提交表單
任何標籤經過DOM均可以提交表單
document.getElementById('f1').submit();
alert();  彈窗
confirm('肯定?') 確認框  確認爲true 取消爲false
console.log(v)  console口打印

location.href  獲取當前url
location.href="http://www.baidu.com"  設置當前url 用於作重定向 跳轉
location.href=location.href  刷新
location.reload();  刷新

var obj=setInterval(function(){},5000)  定時器 5000毫秒執行一次函數
clearInterval(obj);清除定時器

setTimeout 定時器只執行一次
obj= setTimeout(function (){},5000)
清除定時器
claerTimeout(obj);this

 

 

S10.htmlurl

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
</head>
<body>
    <div id="status"></div>
    <input type="button" value="刪除" onclick="deleteEle(); "/>
    <script>
        function deleteEle() {
            document.getElementById('status').innerText="已經刪除";
            obj= setTimeout(function () {
                document.getElementById('status').innerText='';
            },5000)
            clearTimeout(obj)
        }
    </script>
</body>
</html>
document.getElementById('status').innerText="已經刪除";  從新添加標籤內容spa

 

 

S11.htmlorm

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
</head>
<body>
<table border="1" width="300px">
    <tr onmouseover="t1(0);" onmouseout="t2(0);"><td>1</td><td>2</td><td>2</td></tr>
    <tr onmouseover="t1(1);" onmouseout="t2(1);"><td>1</td><td>2</td><td>2</td></tr>
    <tr onmouseover="t1(2);" onmouseout="t2(2);"><td>1</td><td>2</td><td>2</td></tr>
</table>
<script>
    function t1(n) {
        var mytrs=document.getElementsByTagName('tr')[n];
        mytrs.style.backgroundColor='red';
    }
      function t2(n) {
        var mytrs=document.getElementsByTagName('tr')[n];
        mytrs.style.backgroundColor='';
    }
</script>
</body>
</html>
dom0的方式

綁定事件的兩種方式:
a.直接標籤綁定 onclick='' onfocus=''
b.先獲取dom對象，而後進行綁定
    document.getElementById('xx').onclick
    document.getElementById('xx').onfocus

this 當前觸發事件的標籤
    a.第一種綁定方式
    <input id="i1" type="button" onclick="clickon(this)">
    function clickon(self){
    //self 代指當前點擊的標籤
    }

    b.第二種綁定方式
    <input id="i1" type="button" >
    document.getElementById('xxx').onclick=function(){
      //this 代指當前點擊的標籤
    }

    c.第三種綁定方式
    var mycontent=document.getElementById('i1');
        mymain.addEventListener('click',function(){console.log('aaaaa')},false);
        mymain.addEventListener('click',function(){console.log('bbbbb')},false);


做用域示例
    var mytrs=document.getElementsByTagName('tr');
    var len=mytrs.length;
    for(var i=0;i<len;i++){
        mytrs[i].onmouseover=function () {
           this.style.backgroundColor="red";
        }
        mytrs[i].onmouseout=function () {
           this.style.backgroundColor="";
        }htm

 

 

S12.html

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
</head>
<body>
<table border="1" width="300px">
    <tr><td>1</td><td>2</td><td>2</td></tr>
    <tr><td>1</td><td>2</td><td>2</td></tr>
    <tr><td>1</td><td>2</td><td>2</td></tr>
</table>
<script>
    var mytrs=document.getElementsByTagName('tr');
    var len=mytrs.length;
    for(var i=0;i<len;i++){
        mytrs[i].onmouseover=function () {
           this.style.backgroundColor="red";
        }
        mytrs[i].onmouseout=function () {
           this.style.backgroundColor="";
        }
    }
</script>
</body>
</html>
dom1的方式
this 光標指向那個tr就指向那個tr

 

 

S12-1.html

<!DOCTYPE html>

<html lang="en">

<head>

    <meta charset="UTF-8">

    <title>Title</title>

    <style>

        .hide{

            display: none;

        }

        .item .header{

            height: 35px;

            background-color: #2459a2;

            color: white;

            line-height: 35px;

        }

    </style>

</head>

<body>

    <div style="height: 48px;"></div>



    <div style="width: 300px;">



        <div class="item">

            <div class="header" onclick="ChangeMenu(this);">菜單1</div>

            <div class="content">

                <div>內容1</div>

                <div>內容1</div>

                <div>內容1</div>

            </div>

        </div>



        <div class="item">

            <div  class="header" onclick="ChangeMenu(this);">菜單2</div>

            <div class="content hide">

                <div>內容2</div>

                <div>內容2</div>

                <div>內容2</div>

            </div>

        </div>



        <div class="item">

            <div  class="header" onclick="ChangeMenu(this);" >菜單3</div>

            <div class="content hide">

                <div>內容3</div>

                <div>內容3</div>

                <div>內容3</div>

            </div>

        </div>



        <div class="item">

            <div class="header" onclick="ChangeMenu(this);" >菜單4</div>

            <div class="content hide">

                <div>內容4</div>

                <div>內容4</div>

                <div>內容4</div>

            </div>

        </div>



    </div>



    <script>

        function ChangeMenu(ths) {

            var current_header=ths;

            var item_list=current_header.parentElement.parentElement.children;

            for (var i=0;i<item_list.length;i++){

                var current_item=item_list[i];

                current_item.children[1].classList.add('hide');

            }

            current_header.nextElementSibling.classList.remove('hide');

        }

    </script>

</body>

</html></title>
</head>
<body>

</body>
</html>

 

 

 

S12-2.html

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
</head>
<style>
    #test{
        background-color: red;
        width:300px;
        height:400px;
    }
</style>
<body>
<div id="test">
    sdsd
</div>
<script>
    var mydiv=document.getElementById('test');
    mydiv.addEventListener('click', function(){console.log('aaaaa')},false);
    mydiv.addEventListener('click', function(){console.log('bbbbb')},false);
</script>
</body>
</html>
dom2綁定方法

 

 

S13.html

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
</head>
    <style>
        #main{
            background-color: red;
            width: 300px;
            height:400px;
        }
        #content{
            background-color: pink;
            width: 150px;
            height:200px;
        }
    </style>
<body>
    <div id="main">
        <div id="content"></div>
    </div>
    <script>
        var mymain=document.getElementById('main');
        var mycontent=document.getElementById('content');
        mymain.addEventListener('click',function(){console.log('main')},false);
        mycontent.addEventListener('click',function(){console.log('content')},false); //冒泡  底下的先出來 true的模式恰好相反
    </script>
</body>
</html>

 

 

S14.html

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
</head>
<body>
<script>
    function t1(age) {  //age 先找到函數聲明表達式 function age()
        console.log(age);  //function age()
        var age=27;
        console.log(age);  //27
        function age() {}; //沒有調用，經過
        console.log(age);  // 27 沒有改變
    }
    t1(3);
</script>
</body>
</html>
active object ====>> AO 活動對象
1.形式參數
2.局部變量
3.函數聲明表達式

1.形式參數
AO.age=undefined
AO.age=3
2.局部變量
AO.age=undefined
3.函數聲明表達式 優先級最高
AO.age=function()

相關文章
相關標籤/搜索
每日一句
    每一个你不满意的现在，都有一个你没有努力的曾经。
本站公眾號
   歡迎關注本站公眾號,獲取更多信息
聯繫我們 最近搜索 最新文章 沪ICP备13005482号-10 MyBatis教程 SQL 教程 MySQL教程 Java 教程 Thymeleaf 教程 Hibernate教程 Spring教程 Redis教程