<script language="javascript">
    window.onresize = function() {
    document.getElementById('ctl00_ContentPlaceHolder1_Accordion1').style.height = '100%';
} 

</script>

var EM = new events_managment();

EM.addEvent(window, 'resize', function(win,doc, event_){
    console.log('resized');
    //EM.removeEvent(win,doc, event_);
});

function events_managment(){
    this.events = {};
    this.addEvent = function(node, event_, func){
        if(node.addEventListener){
            if(event_ in this.events){
                node.addEventListener(event_, function(){
                    func(node, event_);
                    this.events[event_](win_doc, event_);
                }, true);
            }else{
                node.addEventListener(event_, function(){
                    func(node, event_);
                }, true);
            }
            this.events[event_] = func;
        }else if(node.attachEvent){

            var ie_event = 'on' + event_;
            if(ie_event in this.events){
                node.attachEvent(ie_event, function(){
                    func(node, ie_event);
                    this.events[ie_event]();
                });
            }else{
                node.attachEvent(ie_event, function(){
                    func(node, ie_event);
                });
            }
            this.events[ie_event] = func;
        }
    }
    this.removeEvent = function(node, event_){
        if(node.removeEventListener){
            node.removeEventListener(event_, this.events[event_], true);
            this.events[event_] = null;
            delete this.events[event_];
        }else if(node.detachEvent){
            node.detachEvent(event_, this.events[event_]);
            this.events[event_] = null;
            delete this.events[event_];
        }
    }
}

永远不要重写窗口。onresize函数。

相反，应该创建一个函数来向对象或元素添加事件侦听器。 这将检查监听器，如果监听器不工作，那么它将覆盖对象的函数作为最后的手段。这是jQuery等库中使用的首选方法。

对象:元素或窗口对象 类型:调整大小，滚动(事件类型) 回调:函数引用

var addEvent = function(object, type, callback) {
    if (object == null || typeof(object) == 'undefined') return;
    if (object.addEventListener) {
        object.addEventListener(type, callback, false);
    } else if (object.attachEvent) {
        object.attachEvent("on" + type, callback);
    } else {
        object["on"+type] = callback;
    }
};

那么用法是这样的:

addEvent(window, "resize", function_reference);

或者使用匿名函数:

addEvent(window, "resize", function(event) {
  console.log('resized');
});

<script language="javascript">
    window.onresize = function() {
    document.getElementById('ctl00_ContentPlaceHolder1_Accordion1').style.height = '100%';
} 

</script>

window.onresize = function() {
    // your code
};

上面已经提到的解决方案将工作，如果你想做的只是调整窗口的大小。但是，如果希望将调整大小传播到子元素，则需要自己传播事件。下面是一些示例代码:

window.addEventListener("resize", function () {
  var recResizeElement = function (root) {
    Array.prototype.forEach.call(root.childNodes, function (el) {

      var resizeEvent = document.createEvent("HTMLEvents");
      resizeEvent.initEvent("resize", false, true);
      var propagate = el.dispatchEvent(resizeEvent);

      if (propagate)
        recResizeElement(el);
    });
  };
  recResizeElement(document.body);
});

注意，子元素可以调用

 event.preventDefault();

作为resize事件的第一个参数传入的事件对象。例如:

var child1 = document.getElementById("child1");
child1.addEventListener("resize", function (event) {
  ...
  event.preventDefault();
});