weui/src/example/searchbar/searchbar_grey.html

A UI library by WeChat official design team, includes the most useful widgets/modules in mobile web applications.

<div class="page">
    <div class="page__hd">
        <h1 class="page__title">SearchBar</h1>
        <p class="page__desc">搜索栏 Grey</p>
    </div>
    <div class="page__bd">
        <div class="weui-search-bar weui-search-bar_filled-grey" id="searchBar">
            <a href="javascript:" role="button" class="weui-search-bar__back-btn"><i role="img" aria-label="返回" class="weui-icon-back-arrow-thin"></i></a>
            <form id="searchForm" role="combobox" aria-haspopup="true" aria-expanded="false" aria-owns="searchResult" class="weui-search-bar__form">
                <div aria-hidden="true" id="searchBox" class="weui-search-bar__box">
                    <i class="weui-icon-search"></i>
                    <span class="weui-search-bar__words">微信</span>
                    <input type="search" aria-controls="searchResult" class="weui-search-bar__input" id="searchInput" placeholder="搜索" required/>
                    <div class="weui-search-bar__mask"></div>
                    <a href="javascript:" role="button" title="清除" class="weui-icon-clear" id="searchClear"></a>
                </div>
                <label for="searchInput" class="weui-search-bar__label" id="searchText">
                    <i class="weui-icon-search"></i>
                    <span class="weui-search-bar__label__text">搜索</span>
                </label>
            </form>
            <a href="javascript:" role="button" class="weui-search-bar__cancel-btn" id="searchCancel">取消</a>
        </div>
    </div>
</div>
<script type="text/javascript">
    $(function(){
        var $searchBar = $('#searchBar'),
            $searchText = $('#searchText'),
            $searchBox = $('#searchBox'),
            $searchInput = $('#searchInput'),
            $searchClear = $('#searchClear'),
            $searchForm = $('#searchForm'),
            $searchCancel = $('#searchCancel');

        function cancelSearch(){
            $searchBar.removeClass('weui-search-bar_focusing');
            $searchText.attr('aria-hidden','false').show();
            $searchBox.attr('aria-hidden','true');
        }

        $searchText.on('click', function(){
            $searchBar.addClass('weui-search-bar_focusing');
            $searchText.attr('aria-hidden','true');
            $searchBox.attr('aria-hidden','false');
            $searchInput.focus();
        });
        $searchInput
            .on('blur', function () {
                if(!this.value.length) cancelSearch();
            })
            .on('input', function(){
                if(this.value.length) {
                    $searchForm.attr('aria-expanded','true');
                } else {
                    $searchForm.attr('aria-expanded','false');
                }
            })
        ;
        $searchClear.on('click', function(){
            $searchInput.focus();
            $searchInput.val('');
        });
        $searchCancel.on('click', function(){
            cancelSearch();
            $searchInput.blur();
        });
    });
</script>