Javascript encoding Style

JSEncoding Style

1, AllCodeThe row ends with a semicolon. AlthoughJSIt is indeed allowed to end with a line break.

2, UseIfOrForStatement, which must be used{}.There is only one sentence in real time!

3, Unlike otherProgramming Language,JSMedium, Block{}It is not used as the scope of the variable.JSOnly function-level scopes are supported (VaRDefinition), or global scope (not defined, orVaRDefined outside the function ).

Therefore,JSOnly allowFunction, if, switch, while, for, do, tryStatement Block{}, Use blocks elsewhere{},An error is reported!

4,VaRIt can only be used once and must be declared before use.

5,Return, break, continue, throwThe statement after the statement is not reachable. Follow up later}End.

JSThe Inaccessible statement in May also be executed!

For example, after the form is submitted, You can execute the subsequent statement.