javascript - 为我的 javascript 代码创建一个外部文件

Question

我知道这个问题被问过很多次，但是当我引用我的 javascript 代码时，我似乎找不到我做错了什么。当我将代码放入正文时，它工作得很好。但是，当我将 javascript 代码单独分开时，它不起作用。任何帮助将不胜感激。谢谢

(function( $ ) {

    //Function to animate slider captions 
	function doAnimations( elems ) {
		//Cache the animationend event in a variable
		var animEndEv = 'webkitAnimationEnd animationend';
		
		elems.each(function () {
			var $this = $(this),
				$animationType = $this.data('animation');
			$this.addClass($animationType).one(animEndEv, function () {
				$this.removeClass($animationType);
			});
		});
	}
	
	//Variables on page load 
	var $myCarousel = $('#carousel-example-generic'),
		$firstAnimatingElems = $myCarousel.find('.item:first').find("[data-animation ^= 'animated']");
		
	//Initialize carousel 
	$myCarousel.carousel();
	
	//Animate captions in first slide on page load 
	doAnimations($firstAnimatingElems);
	
	//Pause carousel  
	$myCarousel.carousel('pause');
	
	
	//Other slides to be animated on carousel slide event 
	$myCarousel.on('slide.bs.carousel', function (e) {
		var $animatingElems = $(e.relatedTarget).find("[data-animation ^= 'animated']");
		doAnimations($animatingElems);
	});  
    $('#carousel-example-generic').carousel({
        interval:3000,
        pause: "false"
    });
	
})(jQuery);	

body {
  margin: 0;
}

.nav {
  border-width: 1px 0;
  list-style: none;
  background: linear-gradient(to top right, #0b0b0b, #494848);
  overflow: hidden;
  width: 100%;
  height: 77px;
  background-color: #000000;
  margin-top: 0;
  margin-bottom: -15px;
}

.nav li {
  display: inline;
  font-family: 'Allerta', Helvetica, Arial, sans-serif;
  font-size: 14px;
  text-transform: uppercase;
  font-weight: 100 line-height: 1.7857;
  letter-spacing: .075em;
  float: right !important;
  margin: 20px;
  margin-right: 4%;
}

.nav a {
  color: white;
  text-decoration: none;
}

li a {
  display: block;
  color: white;
  text-align: center;
  padding: 14px 16px;
  text-decoration: none;
}



/*
Bootstrap Image Carousel Slider with Animate.css
Code snippet by Hashif (http://hashif.com) for Bootsnipp.com
Image credits: unsplash.com
*/
@import url(https://fonts.googleapis.com/css?family=Quicksand:400,700);

body {
    font-family: 'Quicksand', sans-serif;
    font-weight:700;
}





/********************************/
/*          Main CSS     */
/********************************/


#first-slider .main-container {
  padding: 0;
}


#first-slider .slide1 h3, #first-slider .slide2 h3, #first-slider .slide3 h3, #first-slider .slide4 h3{
    color: #fff;
    font-size: 30px;
      text-transform: uppercase;
      font-weight:700;
}

#first-slider .slide1 h4,#first-slider .slide2 h4,#first-slider .slide3 h4,#first-slider .slide4 h4{
    color: #fff;
    font-size: 30px;
      text-transform: uppercase;
      font-weight:700;
}
#first-slider .slide1 .text-left ,#first-slider .slide3 .text-left{
    padding-left: 40px;
}


#first-slider .carousel-indicators {
  bottom: 0;
}
#first-slider .carousel-control.right,
#first-slider .carousel-control.left {
  background-image: none;
}
#first-slider .carousel .item {
  min-height: 425px; 
  height: 100%;
  width:100%;
}

.carousel-inner .item .container {
    display: flex;
    justify-content: center;
    align-items: center;
    position: absolute;
    bottom: 0;
    top: 0;
    left: 0;
    right: 0;
}


#first-slider h3{
  animation-delay: 1s;
}
#first-slider h4 {
  animation-delay: 2s;
}
#first-slider h2 {
  animation-delay: 3s;
}


#first-slider .carousel-control {
    width: 6%;
        text-shadow: none;
}


#first-slider h1 {
  text-align: center;  
  margin-bottom: 30px;
  font-size: 30px;
  font-weight: bold;
}

#first-slider .p {
  padding-top: 125px;
  text-align: center;
}

#first-slider .p a {
  text-decoration: underline;
}
#first-slider .carousel-indicators li {
    width: 14px;
    height: 14px;
    background-color: rgba(255,255,255,.4);
  border:none;
}
#first-slider .carousel-indicators .active{
    width: 16px;
    height: 16px;
    background-color: #fff;
  border:none;
}


.carousel-fade .carousel-inner .item {
  -webkit-transition-property: opacity;
  transition-property: opacity;
}
.carousel-fade .carousel-inner .item,
.carousel-fade .carousel-inner .active.left,
.carousel-fade .carousel-inner .active.right {
  opacity: 0;
}
.carousel-fade .carousel-inner .active,
.carousel-fade .carousel-inner .next.left,
.carousel-fade .carousel-inner .prev.right {
  opacity: 1;
}
.carousel-fade .carousel-inner .next,
.carousel-fade .carousel-inner .prev,
.carousel-fade .carousel-inner .active.left,
.carousel-fade .carousel-inner .active.right {
  left: 0;
  -webkit-transform: translate3d(0, 0, 0);
          transform: translate3d(0, 0, 0);
}
.carousel-fade .carousel-control {
  z-index: 2;
}

.carousel-control .fa-angle-right, .carousel-control .fa-angle-left {
    position: absolute;
    top: 50%;
    z-index: 5;
    display: inline-block;
}
.carousel-control .fa-angle-left{
    left: 50%;
    width: 38px;
    height: 38px;
    margin-top: -15px;
    font-size: 30px;
    color: #fff;
    border: 3px solid #ffffff;
    -webkit-border-radius: 23px;
    -moz-border-radius: 23px;
    border-radius: 53px;
}
.carousel-control .fa-angle-right{
    right: 50%;
    width: 38px;
    height: 38px;
    margin-top: -15px;
    font-size: 30px;
    color: #fff;
    border: 3px solid #ffffff;
    -webkit-border-radius: 23px;
    -moz-border-radius: 23px;
    border-radius: 53px;
}
.carousel-control {
    opacity: 1;
    filter: alpha(opacity=100);
}


/********************************/
/*       Slides backgrounds     */
/********************************/
#first-slider .slide1 {
    background-image: url(http://s20.postimg.org/h50tgcuz1/image.jpg);
      background-size: cover;
    background-repeat: no-repeat;
}
#first-slider .slide2 {
  background-image: url(http://s20.postimg.org/uxf8bzlql/image.jpg);
      background-size: cover;
    background-repeat: no-repeat;
}
#first-slider .slide3 {
  background-image: url(http://s20.postimg.org/el56m97f1/image.jpg);
      background-size: cover;
    background-repeat: no-repeat;
}
#first-slider .slide4 {
  background-image: url(http://s20.postimg.org/66pjy66dp/image.jpg);
      background-size: cover;
    background-repeat: no-repeat;
}




/********************************/
/*          Media Queries       */
/********************************/
@media screen and (min-width: 980px){
      
}
@media screen and (max-width: 640px){
      
}

<!DOCTYPE html>

<head>

<meta charset="utf-8">
  <meta name="viewport" content="width=device-width, initial-scale=1">

<title> Hayat Express</title>


<script src="js/jquery.js"></script>
<script src="js/1slider.js"></script>
<!-- Latest compiled and minified CSS -->
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/css/bootstrap.min.css" integrity="sha384-BVYiiSIFeK1dGmJRAkycuHAHRg32OmUcww7on3RYdg4Va+PmSTsz/K68vbdEjh4u" crossorigin="anonymous">

<!-- Optional theme -->
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/css/bootstrap-theme.min.css" integrity="sha384-rHyoN1iRsVXV4nD0JutlnGaslCJuC7uwjduW9SVrLvRYooPp2bWYgmgJQIXwl/Sp" crossorigin="anonymous">

<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/font-awesome/4.5.0/css/font-awesome.min.css">
<link rel="stylesheet" href="http://cdn.bootcss.com/animate.css/3.5.1/animate.min.css">




<script
  src="https://code.jquery.com/jquery-3.3.1.js"
  integrity="sha256-2Kok7MbOyxpgUVvAk/HJ2jigOSYS2auK4Pfzbm7uH60="
  crossorigin="anonymous"></script>




  <link rel="stylesheet" type="text/css" href="css/stylesheet.css">
  <link href="https://fonts.googleapis.com/css?family=Allerta" rel="stylesheet">
  <link href="https://fonts.googleapis.com/css?family=Crimson+Text" rel="stylesheet">



</head>

<body>

  <ul class="nav">

    <img src="logos/navbar-logo.png">

    <li><a class="hover" href="#Contact">Contact</a></li>
    <li><a class="active" href="#Careers">Careers</a></li>
    <li><a class="active" href="#Services">Services</a></li>
    <li><a class="active" href="#Drivers">Drivers</a></li>
  </ul>


<div id="first-slider">
    <div id="carousel-example-generic" class="carousel slide carousel-fade">
        <!-- Indicators -->
        <ol class="carousel-indicators">
            <li data-target="#carousel-example-generic" data-slide-to="0" class="active"></li>
            <li data-target="#carousel-example-generic" data-slide-to="1"></li>
            <li data-target="#carousel-example-generic" data-slide-to="2"></li>
            <li data-target="#carousel-example-generic" data-slide-to="3"></li>
        </ol>
        <!-- Wrapper for slides -->
        <div class="carousel-inner" role="listbox">
            <!-- Item 1 -->
            <div class="item active slide1">
                <div class="row"><div class="container">
                    <div class="col-md-3 text-right">
                        <img style="max-width: 200px;"  data-animation="animated zoomInLeft" src="http://s20.postimg.org/pfmmo6qj1/window_domain.png">
                    </div>
                    <div class="col-md-9 text-left">
                        <h3 data-animation="animated bounceInDown">Add images, or even your logo!</h3>
                        <h4 data-animation="animated bounceInUp">Easily use stunning effects</h4>             
                     </div>
                </div></div>
             </div> 
            <!-- Item 2 -->
            <div class="item slide2">
                <div class="row"><div class="container">
                    <div class="col-md-7 text-left">
                        <h3 data-animation="animated bounceInDown"> 50 animation options A beautiful</h3>
                        <h4 data-animation="animated bounceInUp">Create beautiful slideshows </h4>
                     </div>
                    <div class="col-md-5 text-right">
                        <img style="max-width: 200px;"  data-animation="animated zoomInLeft" src="http://s20.postimg.org/sp11uneml/rack_server_unlock.png">
                    </div>
                </div></div>
            </div>
            <!-- Item 3 -->
            <div class="item slide3">
                <div class="row"><div class="container">
                    <div class="col-md-7 text-left">
                        <h3 data-animation="animated bounceInDown">Simple Bootstrap Carousel</h3>
                        <h4 data-animation="animated bounceInUp">Bootstrap Image Carousel Slider with Animate.css</h4>
                     </div>
                    <div class="col-md-5 text-right">
                        <img style="max-width: 200px;"  data-animation="animated zoomInLeft" src="http://s20.postimg.org/eq8xvxeq5/globe_network.png">
                    </div>     
                </div></div>
            </div>
            <!-- Item 4 -->
            <div class="item slide4">
                <div class="row"><div class="container">
                    <div class="col-md-7 text-left">
                        <h3 data-animation="animated bounceInDown">We are creative</h3>
                        <h4 data-animation="animated bounceInUp">Get start your next awesome project</h4>
                     </div>
                    <div class="col-md-5 text-right">
                        <img style="max-width: 200px;"  data-animation="animated zoomInLeft" src="http://s20.postimg.org/9vf8xngel/internet_speed.png">
                    </div>  
                </div></div>
            </div>
            <!-- End Item 4 -->
    
        </div>
        <!-- End Wrapper for slides-->
        <a class="left carousel-control" href="#carousel-example-generic" role="button" data-slide="prev">
            <i class="fa fa-angle-left"></i><span class="sr-only">Previous</span>
        </a>
        <a class="right carousel-control" href="#carousel-example-generic" role="button" data-slide="next">
            <i class="fa fa-angle-right"></i><span class="sr-only">Next</span>
        </a>
    </div>
</div>


<footer>
    
</footer>


<!-- Latest compiled and minified JavaScript -->
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/js/bootstrap.min.js" integrity="sha384-Tc5IQib027qvyjSMfHjOMaLkfuWVxZxUPnCJA7l2mCWNIpG9mGCD8wGNIcPD7Txa" crossorigin="anonymous"></script>





</body>

</html>

Answer 1

打开 Chrome Dev Tools 并输入 evaluate $ 以查看 jQuery 是否已正确链接。如果您收到返回的 jQuery 信息，那么您就安全了。

您可能还想像这样添加脚本:

<script type="text/javascript" src="js/jquery.js"></script>
<script type="text/javascript" src="js/1slider.js"></script>

表示为 javascript。如果这不起作用，请验证您的 JS 文件的路径。