Since you've been looking at JavaScript lately, here's a quick look at some of the three uses of JavaScript
Break statement:
The break statement causes the running program to immediately exit the loop that contains the inner layer or exit a switch statement. Because it is used to exit loops or switch statements, this form of break statement is legitimate only if it appears in these statements.
If the termination condition of a loop is very complex, it is much easier to use a break statement to implement certain conditions than to express all the conditions with a circular expression.
<script type= "Text/javascript" > for (var i=1;i<=10;i++) {if (i==6) break; document.write (i); ///Output result: 12345 </script>
[Ctrl + A All SELECT Note: If the need to introduce external JS need to refresh to perform]
Continue statement:
The continue statement is similar to the break statement. The difference is that instead of exiting a loop, it is a new iteration that begins the loop.
Continue statements can only be used in a while statement, a do/while statement, a for statement, or a loop body of a for/in statement, which can cause an error when used elsewhere!
<script type= "Text/javascript" > for (var i=1;i<=10;i++) {if (i==6) continue; document.write (i); ///Output result: 1234578910 </script>
[Ctrl + A All SELECT Note: If the need to introduce external JS need to refresh to perform]
Return statement:
The return statement is used to specify the value returned by the function. The return statement can only appear in the body of the function, and any other place in the code can cause a syntax error!
When the return statement is executed, function execution stops even if there are other statements in the function body!
