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html+css+js下拉列表小三角的實(shí)現(xiàn)方法

發(fā)布時(shí)間:2021-03-03 11:13:29 來源:億速云 閱讀:280 作者:清風(fēng) 欄目:web開發(fā)

這篇“html+css+js下拉列表小三角的實(shí)現(xiàn)方法”除了程序員外大部分人都不太理解,今天小編為了讓大家更加理解“html+css+js下拉列表小三角的實(shí)現(xiàn)方法”,給大家總結(jié)了以下內(nèi)容,具有一定借鑒價(jià)值,內(nèi)容詳細(xì)步驟清晰,細(xì)節(jié)處理妥當(dāng),希望大家通過這篇文章有所收獲,下面讓我們一起來看看具體內(nèi)容吧。

css是什么意思

css是一種用來表現(xiàn)HTML或XML等文件樣式的計(jì)算機(jī)語言,主要是用來設(shè)計(jì)網(wǎng)頁的樣式,使網(wǎng)頁更加美化。它也是一種定義樣式結(jié)構(gòu)如字體、顏色、位置等的語言,并且css樣式可以直接存儲(chǔ)于HTML網(wǎng)頁或者單獨(dú)的樣式單文件中,而樣式規(guī)則的優(yōu)先級(jí)由css根據(jù)這個(gè)層次結(jié)構(gòu)決定,從而實(shí)現(xiàn)級(jí)聯(lián)效果,發(fā)展至今,css不僅能裝飾網(wǎng)頁,也可以配合各種腳本對(duì)于網(wǎng)頁進(jìn)行格式化。

具體代碼:

<!DOCTYPE html>
<html>
<head>
	<title>gadf</title>
	<link rel="stylesheet" type="text/css" href="dist/css/bootstrap.min.css">
	<script src="jquery-3.2.1.min.js" type="text/javascript"></script>
	<script src="dist/js/bootstrap.min.js" type="text/javascript"></script>

<style type="text/css">
	
	.zijisanjiclass{ 
		width: 220px;
		border: 1px solid rgba(0,0,0,.15);
		background-color: #fff;
		padding: 10px;
		top :0px;
		position: absolute;
	}
	.datepicker-select-dropdown.datepicker-select-orient-top:before {
	    bottom: -7px;
	    left: 6px;
	    border-bottom: 0;
	    border-top: 7px solid rgba(0,0,0,.15);
	}
	.datepicker-select-dropdown:before {
	    border-left: 7px solid transparent;
	    border-right: 7px solid transparent;
	    border-bottom: 7px solid rgba(0,0,0,.15);
	    border-bottom-color: rgba(0,0,0,.2);
	}
	.datepicker-select-dropdown:after, .datepicker-select-dropdown:before {
	    content: '';
	    display: inline-block;
	    border-top: 0;
	    position: absolute;
	}
	.datepicker-select-dropdown.datepicker-select-orient-top:after {
	    bottom: -6px;
	    left: 7px;
	    border-bottom: 0;
	    border-top: 6px solid #fff;
	}	
	.datepicker-select-dropdown:after {
	    border-left: 6px solid transparent;
	    border-right: 6px solid transparent;
	    border-bottom: 6px solid #fff;
	}
	.datepicker-select-dropdown.datepicker-select-orient-bottom:after {
	    top: -6px;
	}
	.datepicker-select-dropdown.datepicker-select-orient-bottom:before {
	    top: -7px;
	}
	.form .form-bordered .form-group>p {
	    border-left: 1px solid #efefef;
	}
	.form .form-bordered .form-group {
	    margin: 0;
	    border-bottom: 1px solid #efefef;
	}
</style>

</head>
<body class="page-header-fixed page-sidebar-closed-hide-logo page-content-white">
        <p class="page-wrapper">
            <c:import url="../header.jsp"></c:import> 
            <p class="clearfix"> </p>
            <p class="page-container">
                <p class="page-sidebar-wrapper">
                    <p class="page-sidebar navbar-collapse collapse">
                        <c:import url="../menu.jsp"></c:import>
                    </p>
                </p>
                <p class="page-content-wrapper" >
                    <!-- BEGIN CONTENT BODY -->
                    <p class="page-content" id="mainBodyId">
                        <p class="page-bar">
                            <ul class="page-breadcrumb">
                                <li>
                                    <a href="index.html">首頁</a>
                                    <i class="fa fa-circle"></i>
                                </li>
                            </ul>
                        </p>
                        <p class="row">
                        	<p class="col-md-12">
                        		<p class="portlet light portlet-fit portlet-datatable bordered">
                                    <p class="portlet-body">
                                        <p class="table-container">
                                            <table class="table table-striped table-bordered table-hover table-checkable" id="datatable_ajax_user_info">
                                                <thead>
                                                    <tr role="row" class="heading">
                                                        <th style="width:5%;"> ID </th>
                                                        <th style="width:5%;"> 姓名 </th>
                                                        <th style="width:5%;"> 年齡 </th>
                                                        <th style="width:5%;"> 性別 </th>
                                                        <th style="width:5%;"> 出生日期 </th>
                                                        <th style="width:5%;"> 民族 </th>
                                                        <th style="width:5%;"> 身高(cm) </th>
                                                        <th style="width:5%;"> 體重(Kg) </th>
                                                        <th style="width:5%;"> 學(xué)歷 </th>
                                                        <th style="width:15%;"> 操作 </th>
                                                    </tr>
                                                    <tr role="row" class="heading">
                                                        <th style="width:5%;"> ID </th>
                                                        <th style="width:5%;"> 姓名 </th>
                                                        <th style="width:5%;"> 年齡 </th>
                                                        <th style="width:5%;"> 性別 </th>
                                                        <th style="width:5%;"> 出生日期 </th>
                                                        <th style="width:5%;"> 民族 </th>
                                                        <th style="width:5%;"> 身高(cm) </th>
                                                        <th style="width:5%;"> 體重(Kg) </th>
                                                        <th style="width:5%;"> 學(xué)歷 </th>
                                                        <th style="width:15%;"> 操作 </th>
                                                    </tr>
                                                    <tr role="row" class="heading">
                                                        <th style="width:5%;"> ID </th>
                                                        <th style="width:5%;"> 姓名 </th>
                                                        <th style="width:5%;"> 年齡 </th>
                                                        <th style="width:5%;"> 性別 </th>
                                                        <th style="width:5%;"> 出生日期 </th>
                                                        <th style="width:5%;"> 民族 </th>
                                                        <th style="width:5%;"> 身高(cm) </th>
                                                        <th style="width:5%;"> 體重(Kg) </th>
                                                        <th style="width:5%;"> 學(xué)歷 </th>
                                                        <th style="width:15%;"> 操作 </th>
                                                    </tr>
                                                    <tr role="row" class="heading">
                                                        <th style="width:5%;"> ID </th>
                                                        <th style="width:5%;"> 姓名 </th>
                                                        <th style="width:5%;"> 年齡 </th>
                                                        <th style="width:5%;"> 性別 </th>
                                                        <th style="width:5%;"> 出生日期 </th>
                                                        <th style="width:5%;"> 民族 </th>
                                                        <th style="width:5%;"> 身高(cm) </th>
                                                        <th style="width:5%;"> 體重(Kg) </th>
                                                        <th style="width:5%;"> 學(xué)歷 </th>
                                                        <th style="width:15%;"> 操作 </th>
                                                    </tr>
                                                    <tr role="row" class="heading">
                                                        <th style="width:5%;"> ID </th>
                                                        <th style="width:5%;"> 姓名 </th>
                                                        <th style="width:5%;"> 年齡 </th>
                                                        <th style="width:5%;"> 性別 </th>
                                                        <th style="width:5%;"> 出生日期 </th>
                                                        <th style="width:5%;"> 民族 </th>
                                                        <th style="width:5%;"> 身高(cm) </th>
                                                        <th style="width:5%;"> 體重(Kg) </th>
                                                        <th style="width:5%;"> 學(xué)歷 </th>
                                                        <th style="width:15%;"> 操作 </th>
                                                    </tr>
                                                    <tr role="row" class="heading">
                                                        <th style="width:5%;"> ID </th>
                                                        <th style="width:5%;"> 姓名 </th>
                                                        <th style="width:5%;"> 年齡 </th>
                                                        <th style="width:5%;"> 性別 </th>
                                                        <th style="width:5%;"> 出生日期 </th>
                                                        <th style="width:5%;"> 民族 </th>
                                                        <th style="width:5%;"> 身高(cm) </th>
                                                        <th style="width:5%;"> 體重(Kg) </th>
                                                        <th style="width:5%;"> 學(xué)歷 </th>
                                                        <th style="width:15%;"> 操作 </th>
                                                    </tr>
                                                    <tr role="row" class="heading">
                                                        <th style="width:5%;"> ID </th>
                                                        <th style="width:5%;"> 姓名 </th>
                                                        <th style="width:5%;"> 年齡 </th>
                                                        <th style="width:5%;"> 性別 </th>
                                                        <th style="width:5%;"> 出生日期 </th>
                                                        <th style="width:5%;"> 民族 </th>
                                                        <th style="width:5%;"> 身高(cm) </th>
                                                        <th style="width:5%;"> 體重(Kg) </th>
                                                        <th style="width:5%;"> 學(xué)歷 </th>
                                                        <th style="width:15%;"> 操作 </th>
                                                    </tr>
                                                    <tr role="row" class="filter">
                                                        <td>
                                                        	<input type="text" class="form-control form-filter input-sm" name="userInfoId">
                                                        </td>
                                                        <td>
                                                        	<input type="text" class="form-control form-filter input-sm" name="userName">
                                                        </td>
                                                        <td>
                                                        	<input type="text" class="form-control form-filter input-sm" name="userAge">
                                                        </td>
                                                        <td>
                                                        	<select class="form-control form-filter" style="height: 30px;padding: 4px 12px;">
                                                        		<option value="男">男</option>
                                                        		<option value="女">女</option>
                                                        		<option value="其他">其他</option>
                                                        	</select>
                                                        </td>
                                                        <td>
                                                        	<input type="text" class="form-control form-filter input-sm" name="userBirthday" id="userBirthdayid">
                                                        </td>
                                                        <td>
															<input type="text" class="form-control form-filter input-sm" name="userNations">
														</td>
                                                        <td> 
                                                        	<input type="text" class="form-control form-filter input-sm" name="userHight">
                                                        </td>
                                                        <td>
                                                            <input type="text" class="form-control form-filter input-sm" name="userWeight">
                                                        </td>
                                                        <td>
                                                            <select class="form-control form-filter" style="height: 30px;padding: 4px 12px;">
                                                        		<option value="博士">博士</option>
                                                        		<option value="碩士">碩士</option>
                                                        		<option value="本科">本科</option>
                                                        		<option value="???quot;>???lt;/option>
                                                        		<option value="高中">高中</option>
                                                        		<option value="中專">中專</option>
                                                        		<option value="初中">初中</option>
                                                        		<option value="小學(xué)">小學(xué)</option>
                                                        	</select>
                                                        </td>
                                                        <td>
                                                            <p class="margin-bottom-5">
                                                                <button class="btn btn-sm green btn-outline filter-submit margin-bottom">
                                                                    <i class="fa fa-search"></i> Search</button> <button class="btn btn-sm red btn-outline filter-cancel">
                                                                <i class="fa fa-times"></i> Reset</button>
                                                            </p>
                                                        </td>
                                                    </tr>
                                                </thead>
                                                <tbody> </tbody>
                                            </table>
                                        </p>
                                    </p>
                                </p>
                        	</p>
                        </p>
                    </p>
                </p>
            </p>
            <c:import url="../bottom.jsp"></c:import>
        </p>
        <p id="zijixiede" class="zijisanjiclass datepicker-select-dropdown datepicker-select-orient-left">
        	<p class="form" style="border: 1px solid #e7ecf1!important;">
        	<form class="form-horizontal form-bordered">
        	<p class="form-group">
        		<label class="control-label col-md-3">年</label>
        		<p class="col-md-9">
        			<select class="form-control form-filter">
	        			<option value="">請(qǐng)選擇</option>
	        			<option value="">請(qǐng)選擇</option>
	        			<option value="">請(qǐng)選擇</option>
	        			<option value="">請(qǐng)選擇</option>
	        			<option value="">請(qǐng)選擇</option>
	        			<option value="">請(qǐng)選擇</option>
	        			<option value="">請(qǐng)選擇</option>
	        			<option value="">請(qǐng)選擇</option>
	        			<option value="">請(qǐng)選擇</option>
	        			<option value="">請(qǐng)選擇</option>
	        		</select>
        		</p>
        	</p>
        	<p class="form-group">
        	<label class="control-label col-md-3">月</label>
        		<p class="col-md-9">
        		<select class="form-control form-filter">
        			<option value="">請(qǐng)選擇</option>
        			<option value="">請(qǐng)選擇</option>
        			<option value="">請(qǐng)選擇</option>
        			<option value="">請(qǐng)選擇</option>
        			<option value="">請(qǐng)選擇</option>
        			<option value="">請(qǐng)選擇</option>
        		</select>
        		</p>
        	</p>
        	<p class="form-group">
        	<label class="control-label col-md-3">日</label>
        	<p class="col-md-9">
        		<select class="form-control form-filter">
        			<option value="">請(qǐng)選擇</option>
        			<option value="">請(qǐng)選擇</option>
        			<option value="">請(qǐng)選擇</option>
        			<option value="">請(qǐng)選擇</option>
        			<option value="">請(qǐng)選擇</option>
        		</select>
        		</p>
        	</p>
        	<p class="form-group">
        		<p class="col-md-11">
        		<p class="btn btn-default quedingbtn" >確定</p>
        		</p>
        	</p>
        	</form>
        	</p>
        </p>
        <p class="quick-nav-overlay"></p>
        <script>
		jQuery(document).ready(function(){
			$("#userBirthdayid").focus(function(){ 
				//var offset = this.component ? this.component.parent().offset() : this.element.offset();
				var offset = $(this).offset();
				console.info(offset);

				var paddingTop = $("#zijixiede").css('padding-top');
				console.info(paddingTop);

				var height =  $(this).outerHeight(false);
				console.info(height);
				var width =  $(this).outerWidth(false);
				console.info(width);

				var scrollTop = $(document).scrollTop();
				console.info(scrollTop);

				var outerHeight = $("#zijixiede").outerHeight();
				console.info(outerHeight);
				var top_overflow = -scrollTop + offset.top - outerHeight;
				console.info(top_overflow);
				var yorient = top_overflow < 0 ? 'bottom' : 'top';
				$("#zijixiede").addClass('datepicker-select-orient-' + yorient);
				var top = offset.top;
				if (yorient === 'top')
					top -= outerHeight + parseInt(paddingTop);
				else
					top += height;
				var left = offset.left;
				console.info(left);
				$("#zijixiede").css({ 
					top: top,
					left: left
				});
				$("#zijixiede").show();
			});
			$(document).mousedown(function(e){
				if(!($("#zijixiede").find(e.target).length)&&!($("#userBirthdayid").is(e.target)))
					$("#zijixiede").hide();

			});
			$(".quedingbtn").click(function(){ 
				console.info("拉克建檔立卡京東方拉克");
				//return false;
			});
		});
		</script>
</body>
</html>

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