理想情況下應(yīng)該使用的flags的例子

1、理想情況下應(yīng)該使用的flags的例子possible flags:（可用的 flags:）once: 確保這個回調(diào)列表只執(zhí)行（ .fire() ）一次(像一個遞延 deferred).memory: 保持以前的值，將添加到這個列表的后面的最新的值立刻執(zhí)行調(diào)用任何回調(diào) (像一個遞延 deferred).unique: 確保一次只能添加一個回調(diào)(所以在列表中沒有重復(fù)的回調(diào)).stoponfalse: 當(dāng)一個回調(diào)返回false 時中斷調(diào)用默認(rèn)狀況下，回調(diào)列表將像大事的回調(diào)列表中可以多次觸發(fā)。如何在抱負(fù)狀況下應(yīng)當(dāng)用法的flags的例子，見下文：$.callbacks( "once&a

2、mp;quot; ):var callbacks = $.callbacks( "once" );callbacks.add( fn1 );callbacks.fire( "foo" );callbacks.add( fn2 );callbacks.fire( "bar" );callbacks.remove( fn2 );callbacks.fire( "foobar" );/*output:foo*/$.callbacks( "m

3、emory" ):var callbacks = $.callbacks( "memory" );callbacks.add( fn1 );callbacks.fire( "foo" );callbacks.add( fn2 );callbacks.fire( "bar" );callbacks.remove( fn2 );callbacks.fire( "foobar" );/*output:foofn2 says:foobarfn

4、2 says:barfoobar*/$.callbacks( "unique" ):var callbacks = $.callbacks( "unique" );callbacks.add( fn1 );callbacks.fire( "foo" );callbacks.add( fn1 ); / repeat additioncallbacks.add( fn2 );callbacks.fire( "bar" );callbacks.remove(

5、 fn2 );callbacks.fire( "foobar" );/*output:foobarfn2 says:barfoobar*/$.callbacks( "stoponfalse" ):function fn1( value )console.log( value );return false;function fn2( value )fn1( "fn2 says: " + value );return false;var callbacks = $.callbacks( "stoponfalse" );callbacks.add( fn1 );callbacks.fire( "foo" );callbacks.add( fn2 );callbacks.fire( "bar" );callbacks.remove(