break 结束当前 for，foreach，while，do-while 或者 switch 结构的执行。从循环外代码执行；

break 可以接受一个可选的数字参数来决定跳出几重循环；

 

continue，跳出本次循环，从下次执行；

如：

var i = 0for(i = 0; i <= 10; i++){ if (i == 3) { break }document.write("The number is " + i)document.write("
") }结果The number is 0 The number is 1 The number is 2

--

var i = 0for(i = 0; i <= 10; i++) { if (i == 3) { continue } document.write("The number is " + i) document.write("
") }   结果：The number is 0 The number is 1 The number is 2 The number is 4 The number is 5 The number is 6 The number is 7 The number is 8 The number is 9 The number is 10