javascript条件语句

//条件语句
if (false) {
	console.log("is true")
	} else {
	console.log("is false")
}

//条件语句2
switch(name){
	case "123name":
		console.log("1")
	case 2:
		console.log("2")
		break;
	case 3:
		console.log("3")
	default:
		console.log("4")
}

//条件语句3
var name = "123name"; //定义变量
for (var i = name.length; i >= 0; i--) {  //name.length 获取字符串长度
	console.log("name idx:" + i)  //字符串拼接
}

//条件语句4
do{
	console.log(" while function")
}while(false)

//条件语句5
var nCount = 1
while(nCount > 0){
	console.log("print :" + nCount)
	nCount--;
}