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When reading Extjs Chinese manual today, I wrote four or five lines of sample code. As a result, IE and Firefox failed to report an error.
Check the Code:
HTML:
1 <! DOCTYPE html PUBLIC "-// W3C // dtd xhtml 1.0 Transitional // EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
Index. js content:
1 /*
The following results are indexed on the Internet: ECMAScript stipulates that in some cases, automatic semicolon completion can be executed for JavaScript statements, and return is one of them;
Certain ECMAScript statements (empty statement, variable statement, expression statement, do-while statement, continue statement, break statement, return statement, and throw statement) must be terminated with semicolons. such semicolons may always appear explicitly in the source text. for convenience, however, such semicolons may be omitted from the source text in certain situations. these situations are described by saying that semicolons are automatically inserted into the source code token stream in those situations.
The 11th line in index. js is automatically supplemented with semicolons during parsing by the JavaScript parsing engine, resulting in the subsequent statements being unable to be executed;
Solution: Do not use the braces after the return statement on the new line to avoid Automatic completion of semicolons;
Although very simple, I am one of the new things today. ^__ ^
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