Javascript 无法读取 null 的属性“样式”
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Cannot read property 'style' of null
提问by eric.itzhak
For some strange reason I get a weird error.
出于某种奇怪的原因，我收到了一个奇怪的错误。
I have an element (which I'd defined with PHP) that eventuly looks like this:
我有一个元素（我用 PHP 定义的）最终看起来像这样：
<span id="l_area_1_5" style="display: inline; ">
...some html inputs and stuff....
</span>
Which I am certain by Inspect Element of the Chrome.
我可以通过 Inspect Element of the Chrome 确定这一点。
Now when I try to address to it programaticly with this:
现在，当我尝试以编程方式解决它时：
document.getElementById("1_area_1_5").style.display = 'none';
I get the Cannot read property 'style' of nullerror.
我得到了Cannot read property 'style' of null错误。
I have no idea what the hell that's supposed to mean, any help?
我不知道这到底是什么意思，有什么帮助吗？
回答by Mark Byers
The error means that the element doesn't exist. It's because you have a typo. You wrote 1instead of l.
错误意味着该元素不存在。那是因为你有一个错字。你写的1而不是l.
l_area_1_5
1_area_1_5
^
