JavaScript Rock Solid addEvent
Posted
tags:
篇首语:本文由小常识网(cha138.com)小编为大家整理,主要介绍了JavaScript Rock Solid addEvent相关的知识,希望对你有一定的参考价值。
function addEvent( obj, type, fn ) {
if (obj.addEventListener) {
obj.addEventListener( type, fn, false );
EventCache.add(obj, type, fn);
}
else if (obj.attachEvent) {
obj["e"+type+fn] = fn;
obj[type+fn] = function() { obj["e"+type+fn]( window.event ); }
obj.attachEvent( "on"+type, obj[type+fn] );
EventCache.add(obj, type, fn);
}
else {
obj["on"+type] = obj["e"+type+fn];
}
}
var EventCache = function(){
var listEvents = [];
return {
listEvents : listEvents,
add : function(node, sEventName, fHandler){
listEvents.push(arguments);
},
flush : function(){
var i, item;
for(i = listEvents.length - 1; i >= 0; i = i - 1){
item = listEvents[i];
if(item[0].removeEventListener){
item[0].removeEventListener(item[1], item[2], item[3]);
};
if(item[1].substring(0, 2) != "on"){
item[1] = "on" + item[1];
};
if(item[0].detachEvent){
item[0].detachEvent(item[1], item[2]);
};
item[0][item[1]] = null;
};
}
};
}();
addEvent(window,'unload',EventCache.flush);
以上是关于JavaScript Rock Solid addEvent的主要内容,如果未能解决你的问题,请参考以下文章
单一职责原则|SOLID as a rock
接口隔离原则|SOLID as a rock
里氏替换原则|SOLID as a rock
开放封闭原则|SOLID as a rock
一文搞懂SOLID原则(javascript)
一文搞懂SOLID原则(javascript)