Array cannot use the ForEach () method

Problem Description:

The structure of the function is as shown in the browser error when invoking the function:

Analysis Reason:

In JS syntax, if a statement is exclusive to a line, you can usually omit the semicolon at the end of the sentence

But in fact, when the JS parsing code, only in the end of the sentence is missing a semicolon will not work properly, will automatically fill the semicolon

If the statements in front and back can form a syntactically correct statement, the semicolon is not automatically filled

In the above function, JS actually handles the code as:

function Test (A, B, c) {  var x = A + b[a, B, C].foreach (function (e) {    // ) . ..   })}

In general, if the statement begins with "(", "[", "/", "+", "-" , the statement is most likely resolved with the previous statement

However, if the statement starts with "+ +" or "--", it takes precedence as the prefix operator for parsing

The statement will be parsed to x; ++y instead of + x; y

In addition, if the statement ends with return, continue, and break, JS will automatically fill the semicolon at the newline.

Solution:

Add a semicolon manually at the end of a statement