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button1.onclick = function() { alert(2); };
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/// Ìí¼Óʼþ¼àÌý
///
/// ÔØÌå
/// ʼþÀàÐÍ
/// ʼþº¯Êý
function addEventHandler(target, type, func) {
if (target.addEventListener)
target.addEventListener(type, func, false);
else if (target.attachEvent)
target.attachEvent("on" + type, func);
else target["on" + type] = func;
} ///
/// ÒÆ³ýʼþ¼àÌý
///
/// ÔØÌå
/// ʼþÀàÐÍ
/// ʼþº¯Êý
function removeEventHandler(target, type, func) {
if (target.removeEventListener)
target.removeEventListener(type, func, false);
else if (target.detachEvent)
target.detachEvent("on" + type, func);
else delete target["on" + type];
} var Button1 = document.getElementById("Button1");
var Button1Click = function() { alert(1); };
addEventHandler(Button1, "click", Button1Click);
addEventHandler(Button1, "click", function() { alert(2); } );
addEventHandler(Button1, "click", function() { alert(3); } ); removeEventHandler(Button1, "click", function() { alert(2); } ); // ÒÆ²»³ö
removeEventHandler(Button1, "click", Button1Click); // ¿ÉÒÔÒÆ³ý
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Function.prototype.apply(thisArg,argArray);
Function.prototype.call(thisArg[,arg1[,arg2…]]);
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http://javascript.crockford.com/private.html
function a() {
var i = 0;
function b() {
alert(++i);
}
return b;
}
var c = a();
c();
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