JS-DOM操作案例

2018年7月10日 1条评论 141次阅读 1人点赞

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>dom-操作</title>
</head>
<style>
    body,ul,dl,dt,dd{
        padding: 0;margin: 0;list-style: none;
    }
    #wrap{
        width: 900px;
        height: 400px;
        background: linear-gradient(to right bottom,#21ffff,#ce6584);
        position: absolute;
        left: 0;
        top: 0;
        bottom: 0;
        right: 0;
        margin: auto;
        box-sizing: border-box;
        padding: 80px 0;
    }
    #content{
        width: 700px;
        height: 240px;
        background: rgba(255,255,255,0.5);
        margin: 0 auto;
    }
    #top-wrap{
        height: 50px;
        background: rgba(255,255,255,0.2);
    }
    .fl{
        float: left;
    }
    .fr{
        float: right;
    }
    .clearfix::after{
        content: "";
        display: block;
        height: 0;
        clear: both;
    }
    .top-l,.top-r{
        float: left;
        height: 100%;
        font-size: 14px;
    }
    .top-l{
        width: 100px;
        line-height: 50px;
        text-align: center;
    }
    .top-r{
        width: calc(100% - 100px);
        padding: 11px 0;
        box-sizing: border-box;
    }
    .top-r li{
        border: 2px solid #10aaff;
        height: 24px;
        line-height: 24px;
        float: left;
        padding: 0 5px;
        margin-right: 5px;
        display: none;
    }
    .details{
        padding: 0 5px;
        color: #10aaff;
    }
    .close{
        padding: 0 5px;
        color: #fff;
        background: #10aaff;
        cursor: pointer;
    }
    dl{
        height: 40px;
        line-height: 40px;
        font-size: 14px;
    }
    dt{
        padding-right:20px;
        color: #848a8c;
    }
    dl dd{
        float: left;
        margin-right: 20px;
        color: #181818;
        cursor: pointer;
    }
    #inof-wrap{
        padding: 15px 20px;
        box-sizing: border-box;
        background: rgba(255,255,255,0.6);
    }
    #inof-wrap dl:first-child{
        border-bottom: 1px dashed #5acbd6;
    }
    #inof-wrap dl:nth-child(3){
        border-bottom: 1px dashed #5acbd6;
        border-top: 1px dashed #5acbd6;
    }
    .active{
        color: #10aaff;
    }
</style>
<body>
    <div id="wrap">
        <div id="content">
            <div id="top-wrap">
                <div class="top-l">你的选择:</div>
                <ul class="top-r">
                    <li><span class="details">苹果</span><span class="close">×</span></li>
                    <li><span class="details">3.0英寸以下</span><span class="close">×</span></li>
                    <li><span class="details">安卓(Android)</span><span class="close">×</span></li>
                    <li><span class="details">联通3G</span><span class="close">×</span></li>
                </ul>
            </div>
            <div id="inof-wrap">
                <dl>
                    <dt class="fl">品牌:</dt>
                    <dd>苹果</dd>
                    <dd>小米</dd>
                    <dd>锤子</dd>
                    <dd>魅族</dd>
                    <dd>华为</dd>
                    <dd>OPPO</dd>
                    <dd>vivo</dd>
                    <dd>乐视</dd>
                    <dd>360</dd>
                    <dd>中兴</dd>
                    <dd>索尼</dd>
                </dl>
                <dl>
                    <dt class="fl">尺寸:</dt>
                    <dd>3.0英寸以下</dd>
                    <dd>3.0-3.9英寸</dd>
                    <dd>4.0-4.5英寸</dd>
                    <dd>4.6-4.9英寸</dd>
                    <dd>5.0-5.5英寸</dd>
                    <dd>6.0英寸以上</dd>
                </dl>
                <dl>
                    <dt class="fl">系统:</dt>
                    <dd>安卓(Android)</dd>
                    <dd>苹果(IOS)</dd>
                    <dd>微软(WindowsPhone)</dd>
                    <dd>无</dd>
                    <dd>其他</dd>
                </dl>
                <dl>
                    <dt class="fl">网络:</dt>
                    <dd>联通3G</dd>
                    <dd>双卡单4G</dd>
                    <dd>双卡双4G</dd>
                    <dd>联通4G</dd>
                    <dd>电信4G</dd>
                    <dd>移动4G</dd>
                </dl>
            </div>
        </div>
    </div>
</body>
<script>
    "use strict";
    let aLi=document.querySelectorAll('.top-r li');
    let aClose=document.querySelectorAll('.top-r .close');
    let aDl=document.querySelectorAll('#inof-wrap dl');
    let aDd=document.querySelectorAll('#inof-wrap dl dd');
    for(let i=0;i<aDd.length;i++){
        aDd[i].onclick=function(){
            //父元素 dl的index索引值
            let parent_index=this.parentNode.index;
            //点击的dd里的内容
            let dd_content=this.innerText;
            //如果点击的dd没有active的类并且active类没有在当前dl里的dd的dom身上
            if(this.getAttribute("class")!=="active" && !this.parentNode.querySelector('.active')){
                //点击的dd就给加个active类
                this.className="active";
            }else{//如果已经存在类了，点击的dd添加上active类，当前dl里的dd已经存在的去掉active类
                this.parentNode.querySelector('.active').className="";
                this.className="active";
            }
            //对应索引值的li的内容和显示隐藏控制
            aLi[parent_index].style.display="block";
            aLi[parent_index].querySelector('.details').innerHTML=dd_content; 
        }
    }
    for(let i=0;i<aClose.length;i++){
        //给关闭按钮和dl添加自定义索引值
        aClose[i].index=i;
        aDl[i].index=i;
        //关闭按钮注册点击事件
        aClose[i].onclick=function(){
            this.parentNode.querySelector('.details').innerHTML='';
            this.parentNode.style.display='none';
            aDl[this.index].querySelector('.active').className="";
        }
    }
</script>
</html>

100

101

102

103

104

105

106

107

108

109

110

111

112

113

114

115

116

117

118

119

120

121

122

123

124

125

126

127

128

129

130

131

132

133

134

135

136

137

138

139

140

141

142

143

144

145

146

147

148

149

150

151

152

153

154

155

156

157

158

159

160

161

162

163

164

165

166

167

168

169

170

171

172

173

174

175

176

177

178

179

180

181

182

183

184

185

186

187

188

189

190

191

192

193

194

195

196

197

198

199

200

201

202

203

204

205

<!DOCTYPE html>

<head>

</head>

<style>

body,ul,dl,dt,dd{

padding: 0;margin: 0;list-style: none;

}

#wrap{

width: 900px;

height: 400px;

background: linear-gradient(to right bottom,#21ffff,#ce6584);

position: absolute;

left: 0;

top: 0;

bottom: 0;

right: 0;

margin: auto;

box-sizing: border-box;

padding: 80px 0;

}

#content{

width: 700px;

height: 240px;

background: rgba(255,255,255,0.5);

margin: 0 auto;

}

#top-wrap{

height: 50px;

background: rgba(255,255,255,0.2);

}

.fl{

float: left;

}

.fr{

float: right;

}

.clearfix::after{

content: "";

display: block;

height: 0;

clear: both;

}

.top-l,.top-r{

float: left;

height: 100%;

font-size: 14px;

}

.top-l{

width: 100px;

line-height: 50px;

text-align: center;

}

.top-r{

width: calc(100% - 100px);

padding: 11px 0;

box-sizing: border-box;

}

.top-r li{

border: 2px solid #10aaff;

height: 24px;

line-height: 24px;

float: left;

padding: 0 5px;

margin-right: 5px;

display: none;

}

.details{

padding: 0 5px;

color: #10aaff;

}

.close{

padding: 0 5px;

color: #fff;

background: #10aaff;

cursor: pointer;

}

dl{

height: 40px;

line-height: 40px;

font-size: 14px;

}

dt{

padding-right:20px;

color: #848a8c;

}

dl dd{

float: left;

margin-right: 20px;

color: #181818;

cursor: pointer;

}

#inof-wrap{

padding: 15px 20px;

box-sizing: border-box;

background: rgba(255,255,255,0.6);

}

#inof-wrap dl:first-child{

border-bottom: 1px dashed #5acbd6;

}

#inof-wrap dl:nth-child(3){

border-bottom: 1px dashed #5acbd6;

border-top: 1px dashed #5acbd6;

}

.active{

color: #10aaff;

}

</style>

<body>

<li><span class="details">安卓(Android)</span><span class="close">×</span></li>

</ul>

</div>

<dl>

</dl>

<dl>

</dl>

<dl>

<dd>安卓(Android)</dd>

<dd>微软(WindowsPhone)</dd>

</dl>

<dl>

</dl>

</div>

</body>

"use strict";

let aLi=document.querySelectorAll('.top-r li');

let aClose=document.querySelectorAll('.top-r .close');

let aDl=document.querySelectorAll('#inof-wrap dl');

let aDd=document.querySelectorAll('#inof-wrap dl dd');

for(let i=0;i<aDd.length;i++){

aDd[i].onclick=function(){

//父元素 dl的index索引值

let parent_index=this.parentNode.index;

//点击的dd里的内容

let dd_content=this.innerText;

//如果点击的dd没有active的类并且active类没有在当前dl里的dd的dom身上

if(this.getAttribute("class")!=="active" && !this.parentNode.querySelector('.active')){

//点击的dd就给加个active类

this.className="active";

}else{//如果已经存在类了，点击的dd添加上active类，当前dl里的dd已经存在的去掉active类

this.parentNode.querySelector('.active').className="";

this.className="active";

}

//对应索引值的li的内容和显示隐藏控制

aLi[parent_index].style.display="block";

aLi[parent_index].querySelector('.details').innerHTML=dd_content;

}

for(let i=0;i<aClose.length;i++){

//给关闭按钮和dl添加自定义索引值

aClose[i].index=i;

aDl[i].index=i;

//关闭按钮注册点击事件

aClose[i].onclick=function(){

this.parentNode.querySelector('.details').innerHTML='';

this.parentNode.style.display='none';

aDl[this.index].querySelector('.active').className="";

}

</script>

</html>

考虑性能的话，这个方法的缺点是：在点击事件中临时获取dom元素对性能不太友好，所以我又用事件委托写了第二种方法。如下

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>dom-操作-2</title>
</head>
<style>
    body,ul,dl,dt,dd{
        padding: 0;margin: 0;list-style: none;
    }
    #wrap{
        width: 900px;
        height: 400px;
        background: linear-gradient(to right bottom,#21ffff,#ce6584);
        position: absolute;
        left: 0;
        top: 0;
        bottom: 0;
        right: 0;
        margin: auto;
        box-sizing: border-box;
        padding: 80px 0;
    }
    #content{
        width: 700px;
        height: 240px;
        background: rgba(255,255,255,0.5);
        margin: 0 auto;
    }
    #top-wrap{
        height: 50px;
        background: rgba(255,255,255,0.2);
    }
    .fl{
        float: left;
    }
    .fr{
        float: right;
    }
    .clearfix::after{
        content: "";
        display: block;
        height: 0;
        clear: both;
    }
    .top-l,.top-r{
        float: left;
        height: 100%;
        font-size: 14px;
    }
    .top-l{
        width: 100px;
        line-height: 50px;
        text-align: center;
    }
    .top-r{
        width: calc(100% - 100px);
        padding: 11px 0;
        box-sizing: border-box;
    }
    .top-r li{
        border: 2px solid #10aaff;
        height: 24px;
        line-height: 24px;
        float: left;
        padding: 0 5px;
        margin-right: 5px;
        display: none;
    }
    .details{
        padding: 0 5px;
        color: #10aaff;
    }
    .close{
        padding: 0 5px;
        color: #fff;
        background: #10aaff;
        cursor: pointer;
    }
    dl{
        height: 40px;
        line-height: 40px;
        font-size: 14px;
    }
    dt{
        padding-right:20px;
        color: #848a8c;
    }
    dl dd{
        float: left;
        margin-right: 20px;
        color: #181818;
        cursor: pointer;
    }
    #inof-wrap{
        padding: 15px 20px;
        box-sizing: border-box;
        background: rgba(255,255,255,0.6);
    }
    #inof-wrap dl:first-child{
        border-bottom: 1px dashed #5acbd6;
    }
    #inof-wrap dl:nth-child(3){
        border-bottom: 1px dashed #5acbd6;
        border-top: 1px dashed #5acbd6;
    }
    .active{
        color: #10aaff;
    }
</style>
<body>
    <div id="wrap">
        <div id="content">
            <div id="top-wrap">
                <div class="top-l">你的选择:</div>
                <ul class="top-r">
                    <li><span class="details">苹果</span><span class="close">×</span></li>
                    <li><span class="details">3.0英寸以下</span><span class="close">×</span></li>
                    <li><span class="details">安卓(Android)</span><span class="close">×</span></li>
                    <li><span class="details">联通3G</span><span class="close">×</span></li>
                </ul>
            </div>
            <div id="inof-wrap">
                <dl>
                    <dt class="fl">品牌:</dt>
                    <dd>苹果</dd>
                    <dd>小米</dd>
                    <dd>锤子</dd>
                    <dd>魅族</dd>
                    <dd>华为</dd>
                    <dd>OPPO</dd>
                    <dd>vivo</dd>
                    <dd>乐视</dd>
                    <dd>360</dd>
                    <dd>中兴</dd>
                    <dd>索尼</dd>
                </dl>
                <dl>
                    <dt class="fl">尺寸:</dt>
                    <dd>3.0英寸以下</dd>
                    <dd>3.0-3.9英寸</dd>
                    <dd>4.0-4.5英寸</dd>
                    <dd>4.6-4.9英寸</dd>
                    <dd>5.0-5.5英寸</dd>
                    <dd>6.0英寸以上</dd>
                </dl>
                <dl>
                    <dt class="fl">系统:</dt>
                    <dd>安卓(Android)</dd>
                    <dd>苹果(IOS)</dd>
                    <dd>微软(WindowsPhone)</dd>
                    <dd>无</dd>
                    <dd>其他</dd>
                </dl>
                <dl>
                    <dt class="fl">网络:</dt>
                    <dd>联通3G</dd>
                    <dd>双卡单4G</dd>
                    <dd>双卡双4G</dd>
                    <dd>联通4G</dd>
                    <dd>电信4G</dd>
                    <dd>移动4G</dd>
                </dl>
            </div>
        </div>
    </div>
</body>
<script>
    "use strict";
    let oWrap=document.querySelector('#inof-wrap');
    let oUl=document.querySelector('.top-r');
    let aLi=document.querySelectorAll('.top-r li');
    let aClose=document.querySelectorAll('.top-r .close');
    let aDl=document.querySelectorAll('#inof-wrap dl');
    let aDd=document.querySelectorAll('#inof-wrap dl dd');
    oWrap.addEventListener('click',function(ev){
        //事件对象兼容写法
        let e=ev||window.event;

        //点击的目标元素
        let _clickEle=e.target;

        //点击的元素是dd
        if( _clickEle.tagName === 'DD' ){

            //点击的对应的父元素dl的索引值
            let _index=_clickEle.parentNode.index;
            //对应索引值的dl下面的dd没有active类
            if(!aDl[_index].querySelector('.active')){

                //点击的dd加上active类
                _clickEle.className='active';

            }else{//如果已经存在active类 先移除 再给点击的dd添加active类

                //先移除active类
                aDl[_index].querySelector('.active').className='';

                //点击的dd再加上active类
                _clickEle.className='active';
            }
            
            //选择对应的li显示和内容对应改变
            aLi[_index].style.display='block';
            aLi[_index].querySelector('.details').innerHTML=_clickEle.innerHTML;    
        }
    },false);


    //关闭按钮操作
    oUl.addEventListener('click',function(ev){
        //事件对象兼容写法
        let e=ev||window.event;
        //点击的元素是关闭按钮
        if( e.target.className === 'close' ){
            //li的索引值
            let _index=e.target.parentNode.index;
            //点击关闭按钮对应索引值的li隐藏
            aLi[_index].style.display='none';
            //点击关闭按钮对应索引值下面的dl下面的有active类的自己移除掉active
            aDl[_index].querySelector('.active').className='';   
        }
    },false);

    //自定义索引值属性
    for(let i=0; i<aLi.length; i++){
        aLi[i].index=i;
        aDl[i].index=i;
    }
</script>
</html>

100

101

102

103

104

105

106

107

108

109

110

111

112

113

114

115

116

117

118

119

120

121

122

123

124

125

126

127

128

129

130

131

132

133

134

135

136

137

138

139

140

141

142

143

144

145

146

147

148

149

150

151

152

153

154

155

156

157

158

159

160

161

162

163

164

165

166

167

168

169

170

171

172

173

174

175

176

177

178

179

180

181

182

183

184

185

186

187

188

189

190

191

192

193

194

195

196

197

198

199

200

201

202

203

204

205

206

207

208

209

210

211

212

213

214

215

216

217

218

219

220

221

222

223

224

225

226

227

228

229

230

231

<!DOCTYPE html>

<head>

</head>

<style>

body,ul,dl,dt,dd{

padding: 0;margin: 0;list-style: none;

}

#wrap{

width: 900px;

height: 400px;

background: linear-gradient(to right bottom,#21ffff,#ce6584);

position: absolute;

left: 0;

top: 0;

bottom: 0;

right: 0;

margin: auto;

box-sizing: border-box;

padding: 80px 0;

}

#content{

width: 700px;

height: 240px;

background: rgba(255,255,255,0.5);

margin: 0 auto;

}

#top-wrap{

height: 50px;

background: rgba(255,255,255,0.2);

}

.fl{

float: left;

}

.fr{

float: right;

}

.clearfix::after{

content: "";

display: block;

height: 0;

clear: both;

}

.top-l,.top-r{

float: left;

height: 100%;

font-size: 14px;

}

.top-l{

width: 100px;

line-height: 50px;

text-align: center;

}

.top-r{

width: calc(100% - 100px);

padding: 11px 0;

box-sizing: border-box;

}

.top-r li{

border: 2px solid #10aaff;

height: 24px;

line-height: 24px;

float: left;

padding: 0 5px;

margin-right: 5px;

display: none;

}

.details{

padding: 0 5px;

color: #10aaff;

}

.close{

padding: 0 5px;

color: #fff;

background: #10aaff;

cursor: pointer;

}

dl{

height: 40px;

line-height: 40px;

font-size: 14px;

}

dt{

padding-right:20px;

color: #848a8c;

}

dl dd{

float: left;

margin-right: 20px;

color: #181818;

cursor: pointer;

}

#inof-wrap{

padding: 15px 20px;

box-sizing: border-box;

background: rgba(255,255,255,0.6);

}

#inof-wrap dl:first-child{

border-bottom: 1px dashed #5acbd6;

}

#inof-wrap dl:nth-child(3){

border-bottom: 1px dashed #5acbd6;

border-top: 1px dashed #5acbd6;

}

.active{

color: #10aaff;

}

</style>

<body>

<li><span class="details">安卓(Android)</span><span class="close">×</span></li>

</ul>

</div>

<dl>

</dl>

<dl>

</dl>

<dl>

<dd>安卓(Android)</dd>

<dd>微软(WindowsPhone)</dd>

</dl>

<dl>

</dl>

</div>

</body>

"use strict";

let oWrap=document.querySelector('#inof-wrap');

let oUl=document.querySelector('.top-r');

let aLi=document.querySelectorAll('.top-r li');

let aClose=document.querySelectorAll('.top-r .close');

let aDl=document.querySelectorAll('#inof-wrap dl');

let aDd=document.querySelectorAll('#inof-wrap dl dd');

oWrap.addEventListener('click',function(ev){

//事件对象兼容写法

let e=ev||window.event;

//点击的目标元素

let _clickEle=e.target;

//点击的元素是dd

if( _clickEle.tagName === 'DD' ){

//点击的对应的父元素dl的索引值

let _index=_clickEle.parentNode.index;

//对应索引值的dl下面的dd没有active类

if(!aDl[_index].querySelector('.active')){

//点击的dd加上active类

_clickEle.className='active';

}else{//如果已经存在active类先移除再给点击的dd添加active类

//先移除active类

aDl[_index].querySelector('.active').className='';

//点击的dd再加上active类

_clickEle.className='active';

}

//选择对应的li显示和内容对应改变

aLi[_index].style.display='block';

aLi[_index].querySelector('.details').innerHTML=_clickEle.innerHTML;

}

},false);

//关闭按钮操作

oUl.addEventListener('click',function(ev){

//事件对象兼容写法

let e=ev||window.event;

//点击的元素是关闭按钮

if( e.target.className === 'close' ){

//li的索引值

let _index=e.target.parentNode.index;

//点击关闭按钮对应索引值的li隐藏

aLi[_index].style.display='none';

//点击关闭按钮对应索引值下面的dl下面的有active类的自己移除掉active

aDl[_index].querySelector('.active').className='';

}

},false);

//自定义索引值属性

for(let i=0; i<aLi.length; i++){

aLi[i].index=i;

aDl[i].index=i;

}

</script>

</html>

本作品采用知识共享署名-相同方式共享 4.0 国际许可协议进行许可

Carloscax说道：

2018年8月3日 08:07

Many webmasters know the importance of having backlinks to their sites. Many be got rid of there the tedious employment of obtaining backlinks sooner than themselves which takes time and patience. In the past, it seemed that contrariwise big corporations could shell unlit the money obligatory to indeed win https://otvet.mail.ru/answer/1803131616 backlinks. So they were the ones who ended up initial in the search engine rankings. But things have changed and there are many services these days available to the small business owner.

回复

散人博客

One Hundred Years of Solitude

JS-DOM操作案例

本作品采用知识共享署名-相同方式共享 4.0 国际许可协议进行许可

发表评论取消回复

One Hundred Years of Solitude

本作品采用 知识共享署名-相同方式共享 4.0 国际许可协议 进行许可

发表评论 取消回复

本作品采用知识共享署名-相同方式共享 4.0 国际许可协议进行许可

发表评论取消回复