我只是想出了一个简单的代码，等待用户完成输入:

步骤1。将超时设置为空，然后在用户输入时清除当前超时。

步骤2。触发keyup事件之前定义的变量的清除超时。

步骤3.为上面声明的变量定义timeout;

<input type="text" id="input" placeholder="please type" style="padding-left:20px;"/>
<div class="data"></div>

javascript代码

var textInput = document.getElementById('input');
var textdata = document.querySelector('.data');
// Init a timeout variable to be used below
var timefired = null;

// Listen for keystroke events
// Init a timeout variable to be used below
var timefired = null;// Listen for keystroke events
textInput.onkeyup = function (event) {
clearTimeout(timefired);
timefired = setTimeout(function () {
    textdata.innerHTML = 'Input Value:'+ textInput.value;
  }, 600);
};

如果您正在寻找特定的长度(例如邮政编码字段):

$("input").live("keyup", function( event ){
if(this.value.length == this.getAttribute('maxlength')) {
        //make ajax request here after.
    }
  });

下面是一个解决方案，它在不输入1秒后触发，但在输入为空白时也会立即触发。这在用户删除输入查询后清除搜索结果时非常有用。此解决方案还支持复制和粘贴到搜索框中。$(() =>{…});在简单的Jquery术语中，包装代码的顶部部分仅仅意味着“在页面加载时执行此操作”。

var searchTimer;
var searchInterval = 1000;

$(() => {
    $('#search-box').on('input', (event) => {
        clearTimeout(searchTimer);
        searchTimer = setTimeout(() => {
            searchContacts(event.target.value);
        }, (event.target.value.length > 0) ? searchInterval : 0);
    });
});

function searchContacts(val) {
    console.log('searching: ' + val);
}

简单易懂。

var mySearchTimeout;
$('#ctl00_mainContent_CaseSearch').keyup(function () {
   clearTimeout(mySearchTimeout);
   var filter = $(this).val();
   mySearchTimeout = setTimeout(function () { myAjaxCall(filter); }, 700);
   return true;
});

const inText = document.getElementById('inText') const outText = document.getElementById('outText') Const delay = 1000 让计时器 inText。addEventListener('input'， code => { clearTimeout(计时器); timer = setTimeout(x => { outText。innerHTML = inText.value }，延迟，代码) }) <textarea id='inText'>编辑这个和 <pre id='outText'>在你停止输入一秒钟后看到结果</pre>

哇，甚至有3条评论都是正确的!

Empty input is not a reason to skip function call, e.g. I remove waste parameter from url before redirect .on ('input', function() { ... }); should be used to trigger keyup, paste and change events definitely .val() or .value must be used You can use $(this) inside event function instead of #id to work with multiple inputs (my decision) I use anonymous function instead of doneTyping in setTimeout to easily access $(this) from n.4, but you need to save it first like var $currentInput = $(this);

编辑我看到有些人不理解没有复制粘贴就绪代码的指示。在这里你

var typingTimer;
//                  2
$("#myinput").on('input', function () {
    //             4     3
    var input = $(this).val();
    clearTimeout(typingTimer);
    //                           5
    typingTimer = setTimeout(function() {
        // do something with input
        alert(input);
    }, 5000);      
});