小编Jim*_*ton的帖子

好的，所以我有一个充满对象的变量，该对象具有键值对，现在是代码！

var images = [
  { height: 10, width: 30 },
  { height: 20, width: 90 },
  { height: 54, width: 32 }
];
var areas = [];

//calculate the are of hte image 

images.forEach((image)=>{
    areas.push(images.height.value*images.width.value)
});

我试图运行抛出对象并乘以值并将它们添加到新的区域数组中！

我试图将导航栏项目向右浮动而不是向左浮动，这是我使用过的floats float-right类的 html ，我认为pull-right已弃用，因此任何可以提供帮助的人都会受到赞赏

<header class="container-fluid" id="nav">
      <nav class="navbar navbar-expand-lg ">
          <a class="navbar-brand" href="#">Navbar</a>
          <button class="navbar-toggler" type="button" data-toggle="collapse" data-target="#navbarSupportedContent" aria-controls="navbarSupportedContent" aria-expanded="false" aria-label="Toggle navigation">
            <span class="navbar-toggler-icon"></span>
          </button>

          <div class="collapse navbar-collapse mr-auto" id="navbarSupportedContent">
            <ul class="navbar-nav ">
              <li class="nav-item active">
                <a class="nav-link" href="#">Home <span class="sr-only">(current)</span></a>
              </li>
              <li class="nav-item">
                <a class="nav-link" href="#">Link</a>
              </li>
              <li class="nav-item dropdown">
                <a class="nav-link dropdown-toggle" href="#" id="navbarDropdown" role="button" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">
                  Dropdown
                </a>
                <div class="dropdown-menu" aria-labelledby="navbarDropdown">
                  <a class="dropdown-item" href="#">Action</a>
                  <a class="dropdown-item" href="#">Another action</a>
                  <div class="dropdown-divider"></div>
                  <a …