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2017/11/07_ so obvious pit you're still jumping cannot set property ' InnerHTML ' of NULL

Source: Internet
Author: User
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When HTML introduced the generated bundle.js, it was written like this:

1 <!DOCTYPE HTML>2 <HTMLLang= "en">3 <Head>4     <MetaCharSet= "UTF-8">5     <title>Document</title>6     <Scriptsrc= "Bundle.js"></Script>7 </Head>8 <Body>9     <DivID= "App"></Div>Ten </Body> One </HTML>

Result Error:

Why is it?

Isn't that OK?!!!!!!!!

1 <!DOCTYPE HTML>2 <HTMLLang= "en">3 <Head>4     <MetaCharSet= "UTF-8">5     <title>Document</title>6 </Head>7 <Body>8     <DivID= "App"></Div>9     <Scriptsrc= "Bundle.js"></Script>Ten </Body> One </HTML>

Answer: Can't read English, code still can understand ~ ~

Https://stackoverflow.com/questions/18239430/cannot-set-property-innerhtml-of-null

JS is introduced before the DOM loading is complete, causing some objects to be null, so an error is made. You can add window.onload = {}, or put JS before the body end tag and load it at last.

2017/11/07_ so obvious pit you're still jumping cannot set property ' InnerHTML ' of NULL

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Related Keywords:
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