javascript - Google Analytics inside Document 准备好不工作了吗？

Question

关于为什么这有效的原因的快速问题:

<script type="text/javascript">

  var _gaq = _gaq || [];
  _gaq.push(['_setAccount', 'UA-XXXXX-Y']);
  _gaq.push(['_trackPageview']);

  (function() {
    var ga = document.createElement('script'); ga.type = 'text/javascript'; ga.async = true;
    ga.src = ('https:' == document.location.protocol ? 'https://ssl' : 'http://www') + '.google-analytics.com/ga.js';
    var s = document.getElementsByTagName('script')[0]; s.parentNode.insertBefore(ga, s);
  })();

</script>

这 不会:

<script type="text/javascript">
$(function(){
  var _gaq = _gaq || [];
  _gaq.push(['_setAccount', 'UA-XXXXX-Y']);
  _gaq.push(['_trackPageview']);

  (function() {
    var ga = document.createElement('script'); ga.type = 'text/javascript'; ga.async = true;
    ga.src = ('https:' == document.location.protocol ? 'https://ssl' : 'http://www') + '.google-analytics.com/ga.js';
    var s = document.getElementsByTagName('script')[0]; s.parentNode.insertBefore(ga, s);
  })();
});
</script>

是什么阻止分析在文档准备就绪的情况下运行？

Answer 1

你需要将_gaq变量声明到全局作用域

<script type="text/javascript">
var _gaq = _gaq || [];
$(function(){
  _gaq.push(['_setAccount', 'UA-XXXXX-Y']);
  _gaq.push(['_trackPageview']);
  ...

或使 window._gaq 属性与谷歌分析一起使用

<script type="text/javascript">
$(function(){
  window.gaq = window._gaq || [];
  _gaq.push(['_setAccount', 'UA-XXXXX-Y']);
  _gaq.push(['_trackPageview']);
  ...