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JavaScript移动端模拟微信搜索框searchBar

JavaScript移动端模拟微信搜索框searchBar

作者: Rocky_Wong | 来源:发表于2017-11-06 09:48 被阅读47次

    JavaScript移动端模拟微信搜索框searchBar

    效果展示:

    • 初始状态,提示语居中,内容:icon+搜索
    sb1
    • 点击后获取焦点,icon靠右,右边出现取消按钮,点击取消恢复初始状态
    sb2
    • 输入内容后出现删除文字按钮,虚拟键盘出现搜索按钮
    sb3
    sb4

    实现步骤:

    第一步,提示语中包含icon图标并文字居中

    由于input的placeholder并不可以添加图片,所以只能做一个假的placeholder

    <i class='iconfont icon-sousuo'></i>
    <div>搜索</div>
    <input  placeholder="搜索" />
    

    第二步,操作过程的显示与隐藏

    1. 点击前先将input隐藏起来
    2. 点击时文字隐藏,input显示
    3. 输入时框右侧出现清除文字按钮,以及取消输入按钮
    4. 点击取消按钮恢复初始状态
      使用flex布局和盒子模型box结构,能够解决多个块居中和水平分布问题
    -webkit-box-flex: 1;
    -ms-flex: 1;
    display: -webkit-box;
    display: -ms-flexbox;
    -webkit-box-pack: center;
    -webkit-box-align: center;
    -ms-flex-align: center;
    

    使用一个类来定义点击后的状态,通过添加删除这个类来控制各个块的显示隐藏切换

    &.active{
        .search__text{
            display: none;
        }
        .search__input, .search__delete,.search__cancle{
            display: block;
        }
    }
    

    第三步,虚拟键盘上的搜索键显示

    input中选择type=search,而且要在input外加上form标签,这样才能在虚拟键盘上显示搜索字样

    <form autocomplete="off" class='search__input' onsubmit="return false" action=".">
        <input 
            type='search' 
            placeholder="搜索 " 
        />
    </form>
    

    以下是使用vue实现的完整代码:

    <template>
        <div class='search'>
            <label class='search__container':class='{active:isActive}' >
                <div class='search__body' @click="switchSearch">
                    <i class='search__icon iconfont icon-sousuo'></i>
                    <div class='search__text'>搜索</div>
                    <form autocomplete="off" class='search__input' onsubmit="return false" action=".">
                        <input 
                            class='iconfont icon-sousuo' 
                            type='search' 
                            placeholder="搜索" 
                            v-model="value"
                            @search="search"
                        />
                    </form>
                    <i class='search__delete iconfont icon-shanchu' v-show='value' @click="clearInput"></i>
                </div>
                <div class='search__cancle' @click.prevent='cancle'>取消</div>
            </label>    
        </div>
    </template>
    
    <script>
    export default {
        data () {
            return {
                isActive: false,
                value: ''
            }
        },
        methods: {
            switchSearch () {
                this.isActive = true
            },
            search () {
                this.value = this.value.trim()
            },
            clearInput () {
                this.value = ''
            },
            cancle () {
                this.value = ''
                this.isActive = false
            }
        }
    }
    </script>
    
    
    <style lang="less">
        input::-ms-clear,
        input::-ms-reveal {
            display: none;
        }
    
        input[type="search"]::-webkit-search-cancel-button {
            display: none;
        }
    
        .search{
            background-color: #41B883;   
            width: 100%;
            height: .88rem;
            z-index: 99;
            .search__container{
                display: -webkit-box;
                display: -ms-flexbox;
                .search__body{
                    height: .58rem;
                    line-height: .58rem;
                    margin: .14rem .24rem;
                    border-radius:2rem;
                    font-size: .24rem;
                    color:#768893;
                    background: #f4f6f9;
                    position: relative;
                    -webkit-box-flex: 1;
                    -ms-flex: 1;
                    display: -webkit-box;
                    display: -ms-flexbox;
                    -webkit-box-pack: center;
                    -webkit-box-align: center;
                    -ms-flex-align: center;
                    .search__icon{
                        font-size: .24rem;
                        color:#768893;
                        vertical-align: middle;
                        margin-left: 0.2rem;
                    }
                    .search__text{
                        display: inline;
                        font-size: .24rem;
                        color:#768893;
                        line-height: 0.36rem;
                        padding-left: 0.1rem;
                    }
                    .search__input{
                        padding-left: 0.2rem;
                        -webkit-box-flex: 1;
                        color:#768893;
                        display: none;
                        overflow: hidden;
                        input{
                            width: 100%;
                            background: #f4f6f9;
                            letter-spacing: -0.14px;
                            border: 0;
                            -webkit-appearance: none;
                            font-size: 0.24rem;
                            color: #3F3F3F;
                            letter-spacing: -0.14px;
                            padding-left: 0.1rem;
                            border-top-right-radius: 50%;
                            border-bottom-right-radius: 50%;
                        }
                    }
                    .search__delete{
                        display: none;
                        font-size: .3rem;
                        margin-right: 0.16rem;
                    }
                }
                .search__cancle{
                    display: none;
                    height: .58rem;
                    line-height: .58rem;
                    padding: .14rem .24rem .14rem 0;
                    border-radius:2rem;
                    font-size: .24rem;
                    color:#ffffff;
                }
                &.active{
                    .search__text{
                        display: none;
                    }
                    .search__input, .search__delete,.search__cancle{
                        display: block;
                    }
                }
            }  
        }
    </style>
    

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