有两种可以用在循环中的声明:break和continue。 JavaScript break 和 continue 声明 有两种特殊的声明可用在循环内部:break和continue。 Break break命令可以终止循环的运行,然后继续执行循环之后的代码(如果循环之后有代码的话)。 实例: var i=0 for (i=0;i<=10;i++) { if (i==3){break} document.write("The number is " + i) document.write(" ") } [Ctrl+A 全选 注:如需引入外部Js需刷新才能执行] 结果: The number is 0 The number is 1 The number is 2Continue continue命令会终止当前的循环,然后从下一个值继续运行。 实例: var i=0 for (i=0;i<=10;i++) { if (i==3){continue} document.write("The number is " + i) document.write(" ") } [Ctrl+A 全选 注:如需引入外部Js需刷新才能执行] 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