/*
JavaScript Bible, Fourth Edition
by Danny Goodman
John Wiley & Sons CopyRight 2001
*/
Switch Statement and Labeled Break
// build two product arrays, simulating two database tables
function product(name, price) {
this.name = name
this.price = price
}
var ICs = new Array()
ICs[0] = new product("Septium 900MHz","$149")
ICs[1] = new product("Septium Pro 1.0GHz","$249")
ICs[2] = new product("Octium BFD 750MHz","$329")
var snacks = new Array
snacks[0] = new product("Rays Potato Chips","$1.79")
snacks[1] = new product("Cheezey-ettes","$1.59")
snacks[2] = new product("Tortilla Flats","$2.29")
// lookup in the 'table' associated with the product
function getPrice(selector) {
var chipName = selector.options[selector.selectedIndex].text
var outField = document.forms[0].cost
master:
switch(selector.options[selector.selectedIndex].value) {
case "ICs":
for (var i = 0; i < ICs.length; i++) {
if (ICs[i].name == chipName) {
outField.value = ICs[i].price
break master
}
}
break
case "snacks":
for (var i = 0; i < snacks.length; i++) {
if (snacks[i].name == chipName) {
outField.value = snacks[i].price
break master
}
}
break
default:
outField.value = "Not Found"
}
}
Branching with the switch Statement
Select a chip for lookup in the chip price tables: