我怎么能挂钩到浏览器窗口调整大小事件?
jQuery有一种监听调整大小事件的方法，但我不希望仅仅为了这一需求而将其引入我的项目中。
当前回答
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_];
}
}
}
其他回答
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_];
}
}
}
首先，我知道addEventListener方法已经在上面的评论中提到过，但我没有看到任何代码。因为这是首选的方法，下面是:
window.addEventListener('resize', function(event){
// do stuff here
});
这是一个工作样本。
最佳实践是添加到resize事件，而不是替换它:
window.addEventListener('resize', function(event) {
...
}, true);
另一种方法是为DOM事件创建一个单独的处理程序(但只能有一个)，例如。
window.onresize = function(event) {
...
};
jQuery可能会做一些工作来确保resize事件在所有浏览器中始终如一地触发，但我不确定是否每个浏览器都不同，但我鼓励您在Firefox、Safari和IE中进行测试。
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();
});
<script language="javascript">
window.onresize = function() {
document.getElementById('ctl00_ContentPlaceHolder1_Accordion1').style.height = '100%';
}
</script>
