var div = document.getElementById('div'); div.addEventListener('resize', (event) => console.log(event.detail)); function checkResize (mutations) { var el = mutations[0].target; var w = el.clientWidth; var h = el.clientHeight; var isChange = mutations .map((m) => m.oldValue + '') .some((prev) => prev.indexOf('width: ' + w + 'px') == -1 || prev.indexOf('height: ' + h + 'px') == -1); if (!isChange) return; var event = new CustomEvent('resize', {detail: {width: w, height: h}}); el.dispatchEvent(event); } var observer = new MutationObserver(checkResize); observer.observe(div, {attributes: true, attributeOldValue: true, attributeFilter: ['style']}); #div {width: 100px; border: 1px solid #bbb; resize: both; overflow: hidden;} <div id = "div">DIV</div>

从长远来看，您将能够使用ResizeObserver。

new ResizeObserver(callback).observe(element);

不幸的是，目前许多浏览器默认不支持它。

同时，您可以像下面这样使用函数。因为，大部分元素大小的变化将来自窗口大小的调整或DOM中的某些更改。你可以通过窗口的resize事件来监听窗口的大小调整，也可以使用MutationObserver监听DOM的变化。

下面是一个函数的例子，当提供的元素的大小因为这两个事件中的任何一个而改变时，它会回调你:

var onResize = function(element, callback) {
  if (!onResize.watchedElementData) {
    // First time we are called, create a list of watched elements
    // and hook up the event listeners.
    onResize.watchedElementData = [];

    var checkForChanges = function() {
      onResize.watchedElementData.forEach(function(data) {
        if (data.element.offsetWidth !== data.offsetWidth ||
            data.element.offsetHeight !== data.offsetHeight) {
          data.offsetWidth = data.element.offsetWidth;
          data.offsetHeight = data.element.offsetHeight;
          data.callback();
        }
      });
    };

    // Listen to the window's size changes
    window.addEventListener('resize', checkForChanges);

    // Listen to changes on the elements in the page that affect layout 
    var observer = new MutationObserver(checkForChanges);
    observer.observe(document.body, { 
      attributes: true,
      childList: true,
      characterData: true,
      subtree: true 
    });
  }

  // Save the element we are watching
  onResize.watchedElementData.push({
    element: element,
    offsetWidth: element.offsetWidth,
    offsetHeight: element.offsetHeight,
    callback: callback
  });
};

您必须将resize事件绑定到窗口对象上，而不是绑定到通用html元素上。

然后你可以使用这个:

$(window).resize(function() {
    ...
});

在回调函数中，你可以检查div调用的新宽度

$('.a-selector').width();

因此，您的问题的答案是否定的，您不能将resize事件绑定到div。

唯一的窗户。onResize存在于规范中，但你总是可以利用IFrame在DIV中生成新的Window对象。

请核对这个答案。有一个新的jquery插件，它是可移植的，易于使用。您总是可以检查源代码，看看它是如何完成的。

<!-- (1) include plugin script in a page -->
<script src="/src/jquery-element-onresize.js"></script>

// (2) use the detectResizing plugin to monitor changes to the element's size:
$monitoredElement.detectResizing({ onResize: monitoredElement_onResize });

// (3) write a function to react on changes:
function monitoredElement_onResize() {    
    // logic here...
}

var div = document.getElementById('div'); div.addEventListener('resize', (event) => console.log(event.detail)); function checkResize (mutations) { var el = mutations[0].target; var w = el.clientWidth; var h = el.clientHeight; var isChange = mutations .map((m) => m.oldValue + '') .some((prev) => prev.indexOf('width: ' + w + 'px') == -1 || prev.indexOf('height: ' + h + 'px') == -1); if (!isChange) return; var event = new CustomEvent('resize', {detail: {width: w, height: h}}); el.dispatchEvent(event); } var observer = new MutationObserver(checkResize); observer.observe(div, {attributes: true, attributeOldValue: true, attributeFilter: ['style']}); #div {width: 100px; border: 1px solid #bbb; resize: both; overflow: hidden;} <div id = "div">DIV</div>

通过@gman扩展这个答案，这里有一个允许每个元素多次回调的函数，将宽度和高度分解为一个准事件对象。请参阅关于堆栈溢出的嵌入式演示(您可能需要彻底调整主浏览器的大小以触发它)

function elementResizeWatcher(element, callback) { var resolve=function(element) { return (typeof element==='string' ? document[ ['.','#'].indexOf(element.charAt(0)) < 0 ? "getElementById" : "querySelector" ] (element) : element); }, observer, watched = [], checkForElementChanges = function (data) { var w=data.el.offsetWidth,h=data.el.offsetHeight; if ( data.offsetWidth !== w || data.offsetHeight !== h ) { data.offsetWidth = w; data.offsetHeight = h; data.cb({ target : data.el, width : w, height : h }); } }, checkForChanges=function(){ watched.forEach(checkForElementChanges); }, started=false, self = { start: function () { if (!started) { // Listen to the window resize event window.addEventListener("resize", checkForChanges); // Listen to the element being checked for width and height changes observer = new MutationObserver(checkForChanges); observer.observe(document.body, { attributes: true, childList: true, characterData: true, subtree: true }); started=true; } }, stop : function ( ) { if (started) { window.removeEventListener('resize', checkForChanges); observer.disconnect(); started = false; } }, addListener : function (element,callback) { if (typeof callback!=='function') return; var el = resolve(element); if (typeof el==='object') { watched.push({ el : el, offsetWidth : el.offsetWidth, offsetHeight : el.offsetHeight, cb : callback }); } }, removeListener : function (element,callback) { var el = resolve(element); watched = watched.filter(function(data){ return !((data.el===el) && (data.cb===callback)); }); } }; self.addListener(element,callback); self.start(); return self; } var watcher = elementResizeWatcher("#resize_me_on_stack_overflow", function(e){ e.target.innerHTML="i am "+e.width+"px&nbsp;x&nbsp;"+e.height+"px"; }); watcher.addListener(".resize_metoo",function(e) { e.target.innerHTML="and i am "+e.width+"px&nbsp;x&nbsp;"+e.height+"px"; }); var mainsize_info = document.getElementById("mainsize"); watcher.addListener(document.body,function(e) { mainsize_info.innerHTML=e.width+"px&nbsp;x&nbsp;"+e.height+"px"; }); #resize_me_on_stack_overflow{ background-color:lime; } .resize_metoo { background-color:yellow; font-size:36pt; width:50%; } <p> resize the main browser window! <span id="mainsize"><span> </p> <p id="resize_me_on_stack_overflow"> hey, resize me. </p> <p class="resize_metoo"> resize me too. </p>