Javascript DataLayer从中获取
[英]Javascript DataLayer Fetch from
问题描述
I'd like to pull data from my HTML code into my dataLayer (Google Tag Manager). 
我想将数据从HTML代码中提取到dataLayer（Google跟踪代码管理器）中。
The html code is something like this: html代码是这样的：
<body class="portal sessions" data-place="hun">...</body>
And the Javascript Code is something like this: Javascript代码是这样的：
<script type="text/javascript">
var lang_log = document.getElementsByClassName("portal");
dataLayer.push({
"language_login":lang_log
})
</script>
What I'd try is to give to the lang_log variable the "hun" value and I'd try: 我想给lang_log变量赋“ hun”值，然后尝试：
<script type="text/javascript">
var lang_log = document.getElementsByClassName("portal")['data-place'];
dataLayer.push({
"language_login":lang_log
})
</script>
But it's not working. 但这不起作用。 Any ideas? 有任何想法吗？
Any help or advice is apprecaited, Thank you in advance. 如有任何帮助或建议，请先谢谢您。
2 个解决方案
解决方案1
1 已采纳 2016-11-15 14:28:21
document.getElementsByClassName("portal") returns an array-like collection of elements. document.getElementsByClassName("portal")返回类似数组的元素集合。
You can get the first element of this collection with document.getElementsByClassName("portal")[0] . 您可以使用document.getElementsByClassName("portal")[0]获取此集合的第一个元素。
To access the data attribute , use document.getElementsByClassName("portal")[0].dataset.place . 要访问数据属性 ，请使用document.getElementsByClassName("portal")[0].dataset.place 。
var AdataLayer = []; var lang_log = document.getElementsByClassName("portal")[0].dataset.place; AdataLayer.push({ "language_login":lang_log }) console.log(AdataLayer); console.log(AdataLayer[0].language_login);
<body class="portal sessions" id="portal" data-place="hun">...</body>
解决方案2
0 2016-11-15 14:15:48
Found the solution: 找到了解决方案：
the JS should be: JS应该是：
<script type="text/javascript">
var lang_log = document.getElementsByTagName("body")[0].getAttribute("data-locale");
dataLayer.push({
"language_login":lang_log
})
</script>
Still investigating in why the first version did not work! 仍在调查为什么第一个版本不起作用！
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