Question

我对javascript还是很陌生，我通过做一个项目来学习。我有一个情景，可以将各种任务的状态收集到一个数组中。

var statuses = ["deployed", "deployed", "pending", "staged"];

现在，当clearInterval(interval)中的所有项目均为array时，我想致电deployed

Answer 1

var statuses = ["deployed", "deployed", "pending", "staged"];

if(statuses.every(x=>x === "deployed")){
	//clearInterval(interval);
}

console.log(statuses.every(x=>x === "deployed"))

您可以使用every来检查数组中的所有元素是否都是deployed。上面的代码仅基于您的描述当阵列中的所有项目均已部署时，我想调用clearInterval（interval）

Answer 2

使用every方法：

if (statuses.every(status => status === "deployed")) {
  clearInterval(interval);
}

Answer 3

所以这是我认为您应该做的，并且效果很好。病会分解一切，这样才有意义。

/// I just dont like using strings when ints will suffice, so im using 0,1,2 instead of your defined strings.
var valueRef = { 0: "Deployed", 1: "Pending", 2: "Staged" };
/// Info contains your sample data.
var info = [0,0,1,2]
/// This will be needed to clear the repeating fn call
var timeoutKey;
function checkIfAllDeployed(){
    /// Get the size of your info array
    var len = info.length;
    for (index in info){
       /// Loop through all items in the array to check to see if they are 0 (deployed)
       if (info[index] == 0){
       /// it is 0, subtract 1.
         len --;
       }
    }
    /// since you have the length (this sample is 4), when the function finally runs and they are all deployed, then len will now be 0 here.
    if (len <= 0){
       /// Turn off the timeout.
       clearTimeout(timeoutKey);
    }
  /// I use bind so that what the scope is the same as the parent, so it has access to timeoutKey
}.bind(this);
/// Sets your timeout.  This is where you kick it all off at.  It will run at an interval of whatever you want.  1000 == 1 second. So 500 = 0.5 seconds.
timeoutKey = setInterval(checkIfAllDeployed, 500)

现在，它涵盖了循环，但是由于您正在使用ES6，因此有一些很酷的技巧，例如数组的every函数。需要一个函数进行比较。

var timeoutKey
function checkIfAllDeployed(){
  if (info.every(function(item){ return item == 0}){
    clearTimeout(timeoutKey)
  }
}
setInterval(checkIfAllDeployed, 500);

或者如果您想使用速记：

var timeoutKey
function checkIfAllDeployed(){
  /// Now in my example, i use 0, but you can use the string "deployed" here.
  if (info.every(x => x == 0){
    clearTimeout(timeoutKey)
  }
}
setInterval(checkIfAllDeployed, 500);

现在我使用INTS等的原因是它占用的空间更少。字符串少得多。想象一下一个巨大的字符串数组。不太好，但是有了地图，您可以轻松地重新引用。

如果您确定给定行的每个需求数据，您都可以说：

valueRef[info[index]]

，它将为您提供所需的字符串。这有点像枚举，如果需要，也可以使用。由于您具有一组静态状态，因此您只需创建一个枚举即可，它的工作方式类似于我给您的地图示例。

Answer 4

遍历“状态”，检查每个当前值是否为“未部署”。第一次满足条件时，您就知道不需要执行“ clearInterval”逻辑。这意味着，如果永不满足该条件，则可以继续执行该逻辑。

Answer 5

Ciasto！

据我所知，您只是试图遍历statuses数组并验证该数组的每个元素仅包含字符串“ deployed”。下面的代码是该代码的一个简单实现，我插入了一些控制台日志语句来帮助说明逐步执行该过程的逻辑。

function isDeployed(array) {
  for (var i = 0; i < statuses.length; i++) {
    if (statuses[i] !== 'deployed') {
      return false;
    }
  }
  return true;
}

var statuses = ["deployed", "deployed", "pending", "staged"];
// var statuses = ["deployed", "deployed", "deployed", "deployed"];

var result = isDeployed(statuses);
console.log(result);

if (result) {
  console.log('Add more code to deal with your next steps');
}

让我知道您是否需要进一步澄清，或者这与您的要求不完全相同！

查找数组中的所有项目是否都在javascript中设置为期望值？

5 个答案: