如何防止“點擊”事件在“dblclick”事件之前觸發

Question

我必須處理 'click' 和 'dblclick' 兩個事件，但 click 事件總是在 dblclick 事件之前觸發，並且不要讓 dblclick 事件執行。 如何使事件正確執行“點擊”和“dblclick”

google.maps.event.addListener(map, 'dblclick', function(event) {
   polygon(map, event.latLng)
 });


 google.maps.event.addListener(map, 'click', function(event) {
   click_events(map, event.latLng)
 });

Answer 1

var clicked = false;
google.maps.event.addListener(map, 'dblclick', function(event) {
   polygon(map, event.latLng);
   clicked = true;
 });


 google.maps.event.addListener(map, 'click', function(event) {
   if(clicked){
      click_events(map, event.latLng);
   }
 });

Answer 2

使用 setTimeout 並維護超時對象，以便您可以在雙擊時清除它

var timeoutObj;
var timeoutThreshhold = ...; //number of milliseconds to wait for double click

google.maps.event.addListener(map, 'dblclick', function(event) {
   if (timeoutObj) {
     clear timeoutObj;
   }
   polygon(map, event.latLng);
 });


 google.maps.event.addListener(map, 'click', function(event) {
   timeoutObj = setTimeout(function() {
     timeoutObj = null;
     click_events(map, event.latLng);
   }, timeoutThreadhold);
 });

Answer 3

來自https://api.jquery.com/dblclick/

不建議將處理程序綁定到同一元素的 click 和 dblclick 事件。 觸發事件的順序因瀏覽器而異，有些在 dblclick 之前收到兩個點擊事件，而其他只收到一個。 雙擊靈敏度（被檢測為雙擊的最大單擊間隔時間）可能因操作系統和瀏覽器而異，並且通常是用戶可配置的。

自己處理如何，這里是一個多點擊檢測的例子：

 let timeout, n = 0, delay = 250; document.querySelector(".clicker").addEventListener("click", function(event) { ++n; clearTimeout(timeout); timeout = setTimeout(() => { clickHandler.call(this, n, event); n = 0; }, delay); // a visual aid for how many times you've already clicked in this sequence event.target.textContent = n; }); // just something visual const cssNamedColors = ["Maroon","Red","Orange","Yellow","Olive","Green","Purple","Fuchsia","Lime","Teal","Aqua","Blue","Navy","Black","Gray","Silver","White"]; // decide what to do for *n* clicks: function clickHandler(n, event) { event.target.style.background = cssNamedColors[n-1]; event.target.textContent = n + " - " + cssNamedColors[n-1]; }

 .clicker { display: block; background: #888; padding: 100px 0; text-align: center; font-size: 36px; color: white; cursor: pointer; text-shadow: -1px -1px 3px #000, 1px -1px 3px #000, -1px 1px 3px #000, 1px 1px 3px #000; }

 <div class="clicker">(Multi-)Click me</div>