使用jQuery滚动页面不起作用

时间：2016-08-06 07:24:53

标签： javascript jquery jquery-animate

javascript的新手，尝试创建一个简单的程序，在单击导航项时滚动到div。但是，它不起作用，我无法弄清楚原因。

以下是摘录：

＆＃13;
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        $(document).ready(function() {
      alert("asda");
    
      setBindings();
    });
    
    function setBindings() {
      $("nav a").click(function(e) {
         // stops the a tags for working.. i.e. clicking to another page. Functions stops the functionality.
        var sectionID = e.currentTarget.id + "Section";
        alert('button id ' + sectionID);
    
        $("html body").animate({
          scrollTop: $("#" + sectionID).offset().top
        }, 1000)
        })
    
      })
    }
＆＃13; 
<nav class="clearfix">
			<div class="logo-container">
				<i><h2><b>DELIVERY MOTION</b></h2></i>

			</div>

			<ul class="clearfix">
				<li><a id="delivery" href="#">Delivery</a></li>
				<li><a  id="about" href="#">About Us</a></li>
				<li><a href="#">Services</a></li>
				<li><a href="#">FAQ</a></li>
				<li><a href="#">Contact</a></li>

				<li><a href="#">Login</a></li>

			</ul>



			<a href="#" id="pull">Menu</a>
		</nav>


    <div id="deliverySection">
		<h1> Order anything from anywhere in Karachi instantly at your doorstep. </h1><hr>
		<div id='fee-estimate-box'>
			<form id='fee-estimate-form' action="#">
					<legend id='delivery-text'>Delivery Fee Calculator</legend>
					<span>FROM </span> <input type="text" name="firstname" value="PICKUP ADDRESS">
					<span>TO </span> <input type="text" name="lastname" value="DROP ADDRESS">
					<span>ESTIMATED FEE </span> <input type="text" name="estimated-fee" value="0.00 PKR">
					<input class='btn-submit' type="submit" value="BOOK NOW!">
			</form>

		</div>
		<div id='silver-bar'>
			<img src='img/red-car.png' alt='fast deliver'>
		</div>
	</div>
	<div id="aboutSection">
		<h2> How it works </h2>
		<div class="container">
		  <div class="row">
		    <div class="col-sm-2" id="infobox">
					<img src='img/map-icon.png' width="50px" height="50px">
					<h3> Search </h3>
					<h4>Select pickup address </h4>
		    </div>
		    <div class="col-sm-2">
					<br><br>
					<img src='img/arrow-up.png' width="50px" height="50px" class='arrows-img'>
		    </div>
		    <div class="col-sm-2"  id="infobox">
					<img src='img/delivery-icon.png' width="50px" height="50px" class="order-icon-img">
					<h3> Order</h3>
					<h4>Make a booking online </h4>
		    </div>
				<div class="col-sm-2">
					<br>
					<img src='img/arrow-down.png' width="50px" height="50px" class='arrows-img'>
		    </div>
				<div class="col-sm-2"  id="infobox">
					<img src='img/truck-icon.png' width="50px" height="50px">
					<h3> Delivered</h3>
					<h4>Instant courier delivery</h4>
				</div>
		  </div>
		</div>
	</div>
＆＃13;
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起初我认为问题出在我的jquery上，但它的工作正常。 javascript的链接也是正确的。我已经尝试重新检查动画功能，但我无法确定问题。有什么想法吗？

4 个答案:

答案 0 :(得分：1)

$（“html body”）必须替换为$（“html，body”）才能触发滚动。 你的javascript中也有错误，最后还有一个'}）'。 现在没关系。检查您的控制台是否存在此类错误，或使用代码片段，如您的问题所示。

$(document).ready(function() {
    //  alert("asda");
    
        setBindings();
    });
    
    function setBindings() {
        $("nav a").click(function(e) {
  
        var sectionID = e.currentTarget.id + "Section";
       // alert('button id ' + sectionID+ $("#" + sectionID).offset().top);
    
        $("html,body").animate({
          scrollTop: $("#" + sectionID).offset().top
        }, 1000);
        })
    
      }
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<nav class="clearfix">
			<div class="logo-container">
				<i><h2><b>DELIVERY MOTION</b></h2></i>

			</div>

			<ul class="clearfix">
				<li><a id="delivery" href="javascript:;">Delivery</a></li>
				<li><a  id="about" href="javascript:;">About Us</a></li>
				<li><a href="javascript:;">Services</a></li>
				<li><a href="javascript:;">FAQ</a></li>
				<li><a href="javascript:;">Contact</a></li>

				<li><a href="javascript:;/">Login</a></li>

			</ul>



			<a href="#" id="pull">Menu</a>
		</nav>


    <div id="deliverySection">
		<h1> Order anything from anywhere in Karachi instantly at your doorstep. </h1><hr>
		<div id='fee-estimate-box'>
			<form id='fee-estimate-form' action="#">
					<legend id='delivery-text'>Delivery Fee Calculator</legend>
					<span>FROM </span> <input type="text" name="firstname" value="PICKUP ADDRESS">
					<span>TO </span> <input type="text" name="lastname" value="DROP ADDRESS">
					<span>ESTIMATED FEE </span> <input type="text" name="estimated-fee" value="0.00 PKR">
					<input class='btn-submit' type="submit" value="BOOK NOW!">
			</form>

		</div>
		<div id='silver-bar'>
			<img src='img/red-car.png' alt='fast deliver'>
		</div>
	</div>
	<div id="aboutSection">
		<h2> How it works </h2>
		<div class="container">
		  <div class="row">
		    <div class="col-sm-2" id="infobox">
					<img src='img/map-icon.png' width="50px" height="50px">
					<h3> Search </h3>
					<h4>Select pickup address </h4>
		    </div>
		    <div class="col-sm-2">
					<br><br>
					<img src='img/arrow-up.png' width="50px" height="50px" class='arrows-img'>
		    </div>
		    <div class="col-sm-2"  id="infobox">
					<img src='img/delivery-icon.png' width="50px" height="50px" class="order-icon-img">
					<h3> Order</h3>
					<h4>Make a booking online </h4>
		    </div>
				<div class="col-sm-2">
					<br>
					<img src='img/arrow-down.png' width="50px" height="50px" class='arrows-img'>
		    </div>
				<div class="col-sm-2"  id="infobox">
					<img src='img/truck-icon.png' width="50px" height="50px">
					<h3> Delivered</h3>
					<h4>Instant courier delivery</h4>
				</div>
		  </div>
		</div>
	</div>

答案 1 :(得分：0)

尝试这个，滚动。

$(window).scroll(function () {
        if ($(this).scrollTop() >= 20) {        // If page is scrolled more than 20px
            $('#your_image_for_the_scroll').fadeIn(200);
        } else {
            $('#your_image_for_the_scroll').fadeOut(200);
        }
    });

用户向下滚动一下后，可能会出现此图像：

pacman -S mingw-w64-$(uname -m)-gcc

答案 2 :(得分：0)

主要是因为拼写错误。有一个额外的)＆amp;功能结束时}

我创建了一个JSFIDDLE，它正在这里工作

答案 3 :(得分：0)

正如OP指出的那样，没有javascript工作。我们都应该更加聪明，因为锚是常见的。

＆＃13;
＆＃13;
＆＃13; 
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<nav class="clearfix">
			<div class="logo-container">
				<i><h2><b>DELIVERY MOTION</b></h2></i>

			</div>

			<ul class="clearfix">
				<li><a id="delivery" href="#">Delivery</a></li>
				<li><a  id="about" href="#">About Us</a></li>
				<li><a href="#">Services</a></li>
				<li><a href="#">FAQ</a></li>
				<li><a href="#">Contact</a></li>

				<li><a href="#">Login</a></li>

			</ul>



			<a href="#" id="pull">Menu</a>
		</nav>


    <div id="deliverySection">
		<h1> Order anything from anywhere in Karachi instantly at your doorstep. </h1><hr>
		<div id='fee-estimate-box'>
			<form id='fee-estimate-form' action="#">
					<legend id='delivery-text'>Delivery Fee Calculator</legend>
					<span>FROM </span> <input type="text" name="firstname" value="PICKUP ADDRESS">
					<span>TO </span> <input type="text" name="lastname" value="DROP ADDRESS">
					<span>ESTIMATED FEE </span> <input type="text" name="estimated-fee" value="0.00 PKR">
					<input class='btn-submit' type="submit" value="BOOK NOW!">
			</form>

		</div>
		<div id='silver-bar'>
			<img src='img/red-car.png' alt='fast deliver'>
		</div>
	</div>
	<div id="aboutSection">
		<h2> How it works </h2>
		<div class="container">
		  <div class="row">
		    <div class="col-sm-2" id="infobox">
					<img src='img/map-icon.png' width="50px" height="50px">
					<h3> Search </h3>
					<h4>Select pickup address </h4>
		    </div>
		    <div class="col-sm-2">
					<br><br>
					<img src='img/arrow-up.png' width="50px" height="50px" class='arrows-img'>
		    </div>
		    <div class="col-sm-2"  id="infobox">
					<img src='img/delivery-icon.png' width="50px" height="50px" class="order-icon-img">
					<h3> Order</h3>
					<h4>Make a booking online </h4>
		    </div>
				<div class="col-sm-2">
					<br>
					<img src='img/arrow-down.png' width="50px" height="50px" class='arrows-img'>
		    </div>
				<div class="col-sm-2"  id="infobox">
					<img src='img/truck-icon.png' width="50px" height="50px">
					<h3> Delivered</h3>
					<h4>Instant courier delivery</h4>
				</div>
		  </div>
		</div>
	</div>
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