如何将setTimeout和clearTimeout设置为在同一按钮上起作用

Question

这是我的代码

$('#btnDelete').unbind().click(function(){
    var time = setTimeout(function() {
        $.ajax({
            type: 'ajax',
            method: 'get',
            async: false,
            url: '<?php echo base_url() ?>main/delete',
            data: {id:id},
            dataType: 'json',
            success: function(response){
                if(response.success){
                    showNews();
                } else {
                    alert('Error');
                }
            },
            error: function(){
                alert('Error deleting')
            }
        });
    }, 10000);
});

我在哪里可以放置clearTimeout（）函数，以便每次单击同一按钮时计时器都会重置？ 谢谢！

Answer 1

尝试这个：

  var time;
  $('#btnDelete').unbind().click(function() {
    if (time) {
      clearTimeout(time);
      time = null;
    }
    time = setTimeout(function() {
      $.ajax({
        type: 'ajax',
        method: 'get',
        async: false,
        url: '<?php echo base_url() ?>main/delete',
        data: {
          id: id
        },
        dataType: 'json',
        success: function(response) {
          if (response.success) {
            showNews();
          } else {
            alert('Error');
          }
        },
        error: function() {
          alert('Error deleting')
        }
      });
    }, 10000);
  });

将time作为全局变量或在点击处理程序之外可以访问。 检查时间值，如果有任何值，则将其重置，否则您的常规代码将起作用。

Answer 2

使用数据属性保存计时器的状态。 您可以使用data属性来确定是否需要取消它。 您将超时ID存储到data属性中，然后单击以对其进行检查。

$('#btnDelete').unbind().click(function(){
   var btn = $(this);  // reference the button that was clicked
   if (btn.data("timer")) {  // determine if it was already clicked
      window.clearTimeout(btn.data("timer"))  // cancel the timeout
      btn.data("timer", null);  // toggle it to not being used
   } else {
     var time = setTimeout(function() {
       btn.data("timer", null);  // reset it if you want
       /* your code here */
     }, 10000)
     btn.data("timer", time);  // store the timeout id for next click
   }
});

如果您要重新启动它，则不要执行else，并且不需要将data属性设置为null，因为您将覆盖它。

$('#btnDelete').unbind().click(function(){
   var btn = $(this);
   if (btn.data("timer")) {
      window.clearTimeout(btn.data("timer"))
   }
   var time = setTimeout(function() {
       btn.data("timer", null);  // reset it if you want
       /* your code here */
   }, 10000)
   btn.data("timer", time);
});

---

在多个按钮上运行的示例

 $('.btn-delete').unbind().click(function(){ var btn = $(this); // reference the button that was clicked if (btn.data("timer")) { // determine if it was already clicked window.clearTimeout(btn.data("timer")) // cancel the timeout btn.data("timer", null); // toggle it to not being used } else { var time = setTimeout(function() { btn.data("timer", null); // reset it if you want btn.text((new Date()).toLocaleString()) }, 3000) btn.data("timer", time); // store the timeout id for next click } }); 

 <script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script> <button class="btn-delete">Delete 1</button> <button class="btn-delete">Delete 2</button> <button class="btn-delete">Delete 3</button> <button class="btn-delete">Delete 4</button>