javascript 处理事件绑定的一些兼容写法
来源：爱站网时间：2020-04-27编辑：网友分享
项目的开发都离不开兼容的问题，而javascript中的兼容应该是浏览器的兼容是比较大的难题，本文是爱站技术频道为大家带来的javascript 处理事件绑定的一些兼容写法，跟着爱站技术频道来了解吧！
项目的开发都离不开兼容的问题，而javascript中的兼容应该是浏览器的兼容是比较大的难题，本文是爱站技术频道为大家带来的javascript 处理事件绑定的一些兼容写法，跟着爱站技术频道来了解吧！
var addEvent = function( obj, type, fn ) {
if (obj.addEventListener)
obj.addEventListener( type, fn, false );
else if (obj.attachEvent) {
obj["e"+type+fn] = fn;
obj.attachEvent( "on"+type, function() {
obj["e"+type+fn]();
} );
}
};
另一个实现
var addEvent = (function () {
if (document.addEventListener) {
return function (el, type, fn) {
el.addEventListener(type, fn, false);
};
} else {
return function (el, type, fn) {
el.attachEvent('on' + type, function () {
return fn.call(el, window.event);
});
}
}
})();
绑定onpropertychange事件
onpropertychange是微软制造的一个事件，它在一个元素的属性发生变化的时候触发，常见的有文本的长度改变，样长改变等，FF大致和它相似的属性为oninput事件，不过它只针对textfield与textarea的value属性。safari，firefox，chrome与 opera都支持此属性。
var addPropertyChangeEvent = function (obj,fn) {
if(window.ActiveXObject){
obj.onpropertychange = fn;
}else{
obj.addEventListener("input",fn,false);
}
}
移除事件
var removeEvent = function( obj, type, fn ) {
if (obj.removeEventListener)
obj.removeEventListener( type, fn, false );
else if (obj.detachEvent) {
obj.detachEvent( "on"+type, obj["e"+type+fn] );
obj["e"+type+fn] = null;
}
};
加载事件
var loadEvent = function(fn) {
var oldonload = window.onload;
if (typeof window.onload != 'function') {
window.onload = fn;
}else {
window.onload = function() {
oldonload();
fn();
}
}
}
阻止事件
var stopEvent = function(e){
e = e || window.event;
if(e.preventDefault) {
e.preventDefault();
e.stopPropagation();
}else{
e.returnValue = false;
e.cancelBubble = true;
}
}
如果仅仅是阻止事件冒泡
var stopPropagation = function(e) {
e = e || window.event;
if (!+"\v1") {
e.cancelBubble = true;
} else {
e.stopPropagation();
}
}
取得事件源对象
相当于Prototype.js框架的Event.element(e)
var getEvent = function(e){
e = e || window.event;
var target = event.srcElement ? event.srcElement : event.target;
return target
}
或者这个功能更强大，我在开发datagrid时开发出来的，详细用法见《一步步教你实现表格排序（第二部分）》。
var getEvent = function(e) {
var e = e || window.event;
if (!e) {
var c = this.getEvent.caller;
while (c) {
e = c.arguments[0];
if (e && (Event == e.constructor || MouseEvent == e.constructor)) {
break;
}
c = c.caller;
}
}
var target = e.srcElement ? e.srcElement : e.target,
currentN = target.nodeName.toLowerCase(),
parentN = target.parentNode.nodeName.toLowerCase(),
grandN = target.parentNode.parentNode.nodeName.toLowerCase();
return [e,target,currentN,parentN,grandN];
}
最后附上DOM3.0事件的一览表
| type | Bubbling phase | Cancelable | Target node types | DOM interface |
|---|---|---|---|---|
| DOMActivate | Yes | Yes | Element | UIEvent |
| DOMFocusIn | Yes | No | Element | UIEvent |
| DOMFocusOut | Yes | No | Element | UIEvent |
| focus | No | No | Element | UIEvent |
| blur | No | No | Element | UIEvent |
| textInput | Yes | Yes | Element | TextEvent |
| click | Yes | Yes | Element | MouseEvent |
| dblclick | Yes | Yes | Element | MouseEvent |
| mousedown | Yes | Yes | Element | MouseEvent |
| mouseup | Yes | Yes | Element | MouseEvent |
| mouseover | Yes | Yes | Element | MouseEvent |
| mousemove | Yes | Yes | Element | MouseEvent |
| mouseout | Yes | Yes | Element | MouseEvent |
| keydown | Yes | Yes | Element | KeyboardEvent |
| keyup | Yes | Yes | Element | KeyboardEvent |
| mousemultiwheel | Yes | Yes | Document, Element | MouseMultiWheelEvent |
| mousewheel | Yes | Yes | Document, Element | MouseWheelEvent |
| DOMSubtreeModified | Yes | No | Document, DocumentFragment, Element, Attr | MutationEvent |
| DOMNodeInserted | Yes | No | Element, Attr, Text, Comment, CDATASection, DocumentType, EntityReference, ProcessingInstruction | MutationEvent |
| DOMNodeRemoved | Yes | No | Element, Attr, Text, Comment, CDATASection, DocumentType, EntityReference, ProcessingInstruction | MutationEvent |
| DOMNodeRemovedFromDocument | No | No | Element, Attr, Text, Comment, CDATASection, DocumentType, EntityReference, ProcessingInstruction | MutationEvent |
| DOMNodeInsertedIntoDocument | No | No | Element, Attr, Text, Comment, CDATASection, DocumentType, EntityReference, ProcessingInstruction | MutationEvent |
| DOMAttrModified | Yes | No | Element | MutationEvent |
| DOMCharacterDataModified | Yes | No | Text, Comment, CDATASection, ProcessingInstruction | MutationEvent |
| DOMElementNameChanged | Yes | No | Element | MutationNameEvent |
| DOMAttributeNameChanged | Yes | No | Element | MutationNameEvent |
| load | No | No | Document, Element | Event |
| unload | No | No | Document, Element | Event |
| abort | Yes | No | Element | Event |
| error | Yes | No | Element | Event |
| select | Yes | No | Element | Event |
| change | Yes | No | Element | Event |
| submit | Yes | Yes | Element | Event |
| reset | Yes | Yes | Element | Event |
| resize | Yes | No | Document, Element | UIEvent |
| scroll | Yes | No | Document, Element | UIEvent |
通过爱站技术频道介绍的javascript 处理事件绑定的一些兼容写法，相信大家已经知道了怎么操作才能发挥到好的效果，快收藏js.aizhan.com，我们时刻准备为您服务。
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