为什么for循环不起作用？

Question

我确信这与早上5点左右有关...我错过了一些明显的东西。

这是我的代码：

var dayInMonth = 2,
    lastDayNum = 30;

console.log(dayInMonth, (dayInMonth > lastDayNum)); // displays "2 false"

for(dayInMonth; dayInMonth > lastDayNum; dayInMonth++){
    console.log("here!") // not displaying anything
}

什么阻止for循环执行console.log()语句？

Answer 1

dayInMonth > lastDayNum永远不会更大

Answer 2

dayInMonth > lastDayNum应为dayInMonth <= lastDayNum，对吧？

Answer 3

for(dayInMonth; dayInMonth < lastDayNum; dayInMonth++){
    alert("here!") // not displaying anything
}​

你想＆lt;不是＆gt;。

Answer 4

尝试

dayInMonth < lastDayNum

只要第二个参数为真，就执行for循环，直到它为假。

Answer 5

var dayInMonth = 2,
    lastDayNum = 30;

console.log(dayInMonth, (dayInMonth > lastDayNum)); // displays "2 false"

for(dayInMonth; dayInMonth < lastDayNum; dayInMonth++){
    console.log("here!") // not displaying anything
}

Inside for＆lt;，not not gt;

Answer 6

错误的逻辑测试（＆lt;而不是＆gt;）;

for(; dayInMonth < lastDayNum; dayInMonth++){
    console.log("here!") // not displaying anything
}​