在Java中运行函数后成功或出错，祝酒

Question

我有两个看起来像这样的功能：

function functionOne(par1, par2, par3) {
// this functions patches using an api, re-usable
}

function functionTwo(par2) {
functionOne(par1, par2, par3);
functionOne(par1, par2, par3);
functionOne(par1, par2, par3);
functionOne(par1, par2, par3);
}

这按预期工作，但是如果用户按下按钮并且functionTwo成功运行或出现错误，我想向用户提供一些反馈。

我发现了：https://www.w3schools.com/howto/howto_js_snackbar.asp这是我想要的，而不是弹出窗口，但是有可能在成功或出错后显示此信息，如果是，如何显示？谢谢！

Answer 1

看下面的代码片段：

HTML和CSS是从W3C示例中提取的代码。 JS函数showToast()基于他们的示例，但是采用带有默认值的可选参数，并将该参数值附加到Toast。

我制作了一个API（yourApiFuncton()）调用的微型示例，以演示其用法。

当然，这只是一个基本示例，您可以在那儿工作以得到一些更好的东西。

function yourApiFunction(){
  
  //Do your api calls, the "error" variable is only set to demonstrate the use of the success/error message
  let error = false;
  
  if(error){
    showToast("Oh no...");
  }else{
      showToast("Hell yeah");
  }
}

function showToast(content = "Unknown error") { //You can change the default value
  // Get the snackbar DIV
  var x = document.getElementById("snackbar");
  
  //Change the text (not mandatory, but I think you might be willing to do it)
  x.innerHTML = content;

  // Add the "show" class to DIV
  x.className = "show";

  // After 3 seconds, remove the show class from DIV
  setTimeout(function(){ x.className = x.className.replace("show", ""); }, 3000);
}

//Simulating a call to your API
yourApiFunction();

/* The snackbar - position it at the bottom and in the middle of the screen */
#snackbar {
  visibility: hidden; /* Hidden by default. Visible on click */
  min-width: 250px; /* Set a default minimum width */
  margin-left: -125px; /* Divide value of min-width by 2 */
  background-color: #333; /* Black background color */
  color: #fff; /* White text color */
  text-align: center; /* Centered text */
  border-radius: 2px; /* Rounded borders */
  padding: 16px; /* Padding */
  position: fixed; /* Sit on top of the screen */
  z-index: 1; /* Add a z-index if needed */
  left: 50%; /* Center the snackbar */
  bottom: 30px; /* 30px from the bottom */
}

/* Show the snackbar when clicking on a button (class added with JavaScript) */
#snackbar.show {
  visibility: visible; /* Show the snackbar */
  /* Add animation: Take 0.5 seconds to fade in and out the snackbar.
  However, delay the fade out process for 2.5 seconds */
  -webkit-animation: fadein 0.5s, fadeout 0.5s 2.5s;
  animation: fadein 0.5s, fadeout 0.5s 2.5s;
}

/* Animations to fade the snackbar in and out */
@-webkit-keyframes fadein {
  from {bottom: 0; opacity: 0;}
  to {bottom: 30px; opacity: 1;}
}

@keyframes fadein {
  from {bottom: 0; opacity: 0;}
  to {bottom: 30px; opacity: 1;}
}

@-webkit-keyframes fadeout {
  from {bottom: 30px; opacity: 1;}
  to {bottom: 0; opacity: 0;}
}

@keyframes fadeout {
  from {bottom: 30px; opacity: 1;}
  to {bottom: 0; opacity: 0;}
}

<!-- The actual snackbar -->
<div id="snackbar">Some text some message..</div>