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How to avoid the non-existence of a certain element in html causing js to obtain the attribute information of the element and report an error
How to avoid the non-existence of a certain element in html causing js to obtain the attribute information of the element and report an error
WBOY
Release： 2016-09-09 08:13:15
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The page code is as follows:
<code><empty name="search_data">
<div class="box">
<!-- html代码 -->
</div>
</empty>
<script>
var top = $('.box').offset().top;
$("html,body").scrollTop(top);
</script></code>
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As above, is a thinkphp syntax tag, which means that when "search_data" does not exist, the div element with class box will be output to the page. On the contrary, if the "search_data" data exists, the page will not have the div box. , in this case, how to avoid js error?
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