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這是ExtJS中的callParent方法。什麼是$前,$所有者和$名稱?爲什麼有一個領先的「$」符號? callParent:function(args)var method;
// This code is intentionally inlined for the least number of debugger stepping
return (method = this.callParent.caller) && (method.$previous ||
((method = method.$owner ? method : method.caller) &&
method.$owner.superclass.$class[method.$name])).apply(this, args || noArgs);
}