JavaScript Conditions and Branching Code Structures
Part of the JavaScript & AJAX For Dummies Cheat Sheet
Look to the following table for JavaScript control structures you can use in your program code to add branching and looping behavior to your JavaScript programs.
| Element | Description |
|---|---|
| if (condition){ // content } else { // more content } // end if |
Executes content only if condition is true. Optional else clause occurs if condition is false. |
| switch (expression) case: value; //code break; default: //code } |
Compares expression against one or more values. If expression
is equal to value, runs corresponding code. Default clause catches any uncaught values. |
| for(i = 0; i < count; i++) //code } // end for |
Repeats code i times. |
| While (condition){ //code } // end while |
Repeats code as long as condition is true. |
| Function fnName(paramaters) { //code } // end function |
Defines a function named fnName and sends it parameters. All code inside the function will execute when the function is called. |
