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Question

我找不到传递给＆＃39;链接的元素的高度或宽度。功能。我需要它，因为我想计算鼠标点击附加到元素的图像的位置。 ~~offsetHeight，offsetWidth，clientHeight和clientWidth都是未定义的，x和y的位置也是如此。 getBoundingClientRect抛出一个＆＃39;而不是函数＆＃39;错误。~~在模板中设置高度和宽度属性不会改变任何内容。

这是一个说明问题的简单指令：

`<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1">
<!-- TemplateBeginEditable name="doctitle" -->
<title>Fine Antique Clocks, Barometers &amp; Marine Chronometers - Archives</title>
<!-- TemplateEndEditable -->
<!-- Bootstrap -->
<link rel="stylesheet" href="../css/bootstrap.css">
<style type="text/css">
body {
	width: 100%;
	background-image: url(../images/ancient_clock_2048_pl.jpg);
	background-repeat: no-repeat;
	background-attachment: fixed;
	background-color: rgba(229,207,111,0.7);
	background-size: cover;
}

</style>

<!-- HTML5 shim and Respond.js for IE8 support of HTML5 elements and media queries -->
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<!--[if lt IE 9]>
      <script src="https://oss.maxcdn.com/html5shiv/3.7.2/html5shiv.min.js"></script>
      <script src="https://oss.maxcdn.com/respond/1.4.2/respond.min.js"></script>
    <![endif]-->
<!-- TemplateBeginEditable name="head" -->
<!-- TemplateEndEditable -->
</head>
<body>

<nav>
  <div class="container"> 
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<div class="navbar-header">
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   <span class="sr-only">Toggle navigation</span> 
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    <a class="navbar-brand" href="../index.html"><span class="glyphicon glyphicon-home" aria-hidden="true"></span> </a> </div>
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        <li><a href="../antique_clocks_links.html">About Us</a> </li>
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        <li><a href="../antique_clocks_links.html">Links</a> </li>
		 <li class="dropdown"> <a href="#" class="dropdown-toggle" data-toggle="dropdown" role="button" aria-expanded="false" aria-haspopup="true">Dropdown <span class="caret"></span></a>
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	</nav><br>

更新

在收到//OLD var ngnDirectives = angular.module('ngnDirectives'); ngnDirectives.directive('positionTest', function() { function link(scope, element, attrs) { console.log("POSITION"); var position = element.position(); for(p in position) { console.log(p + ", " + element[p]); } console.log("END POSITION"); var offset = element.offset(); console.log("element.offset x, y: " + offset.left + ", " + offset.top); console.log("offsetWidth, offsetHeight: " + element.offsetWidth + ", " + element.offsetHeight); console.log("clientWidth, clientHeight: " + element.clientWidth + ", " + element.clientHeight); //get BoundingClientRect throws 'not a function' error console.log("getBoundingClientRect: " + element.getBoundingClientRect()); } return { scope: {}, restrict: 'E', template: '<div></div>', link: link }; });是原始DOM元素的评论后，我发现element[0]，offsetWidth，offsetHeight和clientWidth仍然不在返回我理解的值。我更改了代码以使用clientHeight，并发现它没有返回正确的＆＃39;底部＆＃39;对于这个数字。这是代码：

getBoundingClientRect

Answer 1

问题在于我没有从正确的元素获得高度和宽度。在进入链接函数时，我将svg标记附加到元素。 svg标签具有宽度和高度，并且在该标签上使用getClientBoundingRect。但是，元素[0]是来自指令＆＃39;模板的标签：＆＃39;定义（空div）。因此，在模板中开始指令的元素如下所示：

    function isScrolledIntoView(elem) {
      if (elem.length > 0) {
        docViewTop = $(window).scrollTop();
        docViewBottom = docViewTop + $(window).height();
        elemTop = $(elem).offset().top;
        return ((elemTop <= docViewBottom) && (elemTop >= docViewTop));
      }
    }

    if (isScrolledIntoView($('.wrapper.site-section:nth-child(1)')) === true) {
      if ($('.desktop').length > 0) {
        $('.sidebar li').removeClass('showAdvertisement');
        $('.sidebar li:nth-child(4)').addClass('showAdvertisement');
      }
    }

    if (isScrolledIntoView($('.wrapper .site-section:nth-child(2)')) === true) {
      if ($('.desktop').length > 0) {
        $('.sidebar li').removeClass('showAdvertisement');
        $('.sidebar li:nth-child(5)').addClass('showAdvertisement');
      }
    }

    if (isScrolledIntoView($('.wrapper .site-section:nth-child(3)')) === true) {
      if ($('.desktop').length > 0) {
        $('.sidebar li').removeClass('showAdvertisement');
        $('.sidebar li:nth-child(6)').addClass('showAdvertisement');
      }
    }

将svg标记附加到元素会导致显示svg标记的字符串文字表示，我可以修复它，但它也可以简单地选择传入链接函数的元素的svg子元素。

如何找到传递给Angularjs中Directive的链接函数的元素的高度和宽度

更新

1 个答案: