If they were omitted, the interpreter would continue executing each statement in each of the following cases We will explain the break statements in the LOOP Control chapter. Statements indicate to the interpreter the end of that particular case. Tekslate will turn you into JavaScript Expert. A situation came up where I had to check for keyboard events and I wanted to include WASD as well as the arrow keys. Explore Online ' JavaScript Training ' and course is aligned with industry needs & developed by industry veterans. Learn JavaScript by Tekslate - Fastest growing sector in the industry. The interpreter checks each case against the value of the expression until a match is found, if nothing matches, a default condition will be used. The basic syntax of the switch statement is to give expression to evaluate and several different statements to execute based on the value of the expression. Starting with JavaScript 1.2, you can use a SWITCH statement that handles exactly this situation, and it does so more efficiently than repeated if.else if statements.

var friends 0 case friends when 0 when 1 p you have very few friends default p. However, this is not always the best solution, especially when all of the branches depend on the value of a single variable. You can use fall through, just as you would in a JavaScript switch statement. You can use multiple if… else if statement, as in the previous chapter, to perform a multi-way branch.

Switch case js