Question

我很难纠正图像交换的语法错误。如果你可以帮助我，我将不胜感激？

function swap(i, s)
{
   var d = document.images;
   d ? d[i].src=s : null;
}

Answer 1

我想你想要这样的东西

<div class="container">
    <div class="navbar navbar-default">
        <div class="navbar-header">
            <a class="navbar-brand" href="#">Bootstrap 3</a>
          <button type="button" class="navbar-toggle collapsed" data-toggle="collapse" data-target="#bs-example-navbar-collapse-1">
        <span class="sr-only">Toggle navigation</span>
        <span class="icon-bar"></span>
        <span class="icon-bar"></span>
        <span class="icon-bar"></span>
            </button>
        </div>
        <div class="navbar-collapse collapse" id="bs-example-navbar-collapse-1">
            <ul class="nav navbar-nav">
                <li class="dropdown active">
                    <a href="#" class="dropdown-toggle" data-toggle="dropdown">Getting started <b class="caret"></b></a>
                    <ul class="dropdown-menu">
                        <li><a href="http://getbootstrap.com/getting-started/#download">Download Bootstrap</a></li>
                        <li class="divider"></li>
                        <li class="dropdown-header">Examples</li>
                        <li><a href="http://getbootstrap.com/getting-started/#template">Basic template</a></li>
                        <li><a href="http://getbootstrap.com/examples/starter-template/">Starter template</a></li>
                        <li><a href="http://getbootstrap.com/examples/grid/">Grids</a></li>
                        <li><a href="http://getbootstrap.com/examples/jumbotron/">Jumbotron</a></li>
                        <li><a href="http://getbootstrap.com/examples/navbar/">Navbar</a></li>
                        <li><a href="http://getbootstrap.com/examples/signin/">Sign-in page</a></li>
                        <li><a href="http://getbootstrap.com/examples/sticky-footer/">Sticky footer</a></li>
                        <li><a href="http://getbootstrap.com/examples/offcanvas/">Offcanvas</a></li>
                        <li><a href="http://getbootstrap.com/examples/carousel/">Carousel</a></li>
                        <li><a href="http://getbootstrap.com/examples/theme/">Theme</a></li>                        
                        <li class="divider"></li>
                        <li class="dropdown-header">Compatibility</li>
                        <li><a href="http://getbootstrap.com/getting-started/#migration">Migrating from 2.x to 3.0</a></li>
                        <li><a href="http://getbootstrap.com/getting-started/#browsers">Browser support</a></li>
                        <li><a href="http://getbootstrap.com/getting-started/#third-parties">Third party support</a></li>
                    </ul>
                </li>
                <li><a href="http://getbootstrap.com/css">CSS</a></li>
                <li><a href="http://getbootstrap.com/components">Components</a></li>
                <li><a href="http://getbootstrap.com/javascript">JavaScript</a></li>
            </ul>
            <ul class="nav navbar-nav navbar-right">
                <li class="active"><a href="http://getbootstrap.com/customize">Customize</a></li>
            </ul>
        </div>
    </div>

    <div class="jumbotron">
        <h1>Twitter Bootstrap 3.0</h1>
        <p class="lead">Starter template with CSS and JS included.</p>
        <p><a class="btn btn-lg btn-primary" href="#fork">Fork this fiddle</a></p>
      </div>
</div>

简单的JavaScript交换功能

1 个答案: