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jQuery版本：2.1.4
1 bind: function( types, data, fn ) { 2 return this.on( types, null, data, fn ); 3 }
对应解绑unband，调用了off。
1 unbind: function( types, fn ) { 2 return this.off( types, null, fn ); 3 }
1 one: function( types, selector, data, fn ) { 2 return this.on( types, selector, data, fn, 1 ); 3 }
1 delegate: function( selector, types, data, fn ) { 2 return this.on( types, selector, data, fn ); 3 }
undelegate调用off
1 undelegate: function( selector, types, fn ) { 2 // ( namespace ) or ( selector, types [, fn] ) 3 return arguments.length === 1 ? this.off( selector, "**" ) : this.off( types, selector || "**", fn ); 4 }
参数：
1 on: function( types, selector, data, fn, /*INTERNAL*/ one ) { 2 var origFn, type; 3 4 // Types can be a map of types/handlers 5 if ( typeof types === "object" ) { 6 // ( types-Object, selector, data ) 7 if ( typeof selector !== "string" ) { 8 // ( types-Object, data ) 9 data = data || selector; 10 selector = undefined; 11 } 12 for ( type in types ) { 13 this.on( type, selector, data, types[ type ], one ); 14 } 15 return this; 16 } 17 18 if ( data == null && fn == null ) { 19 // ( types, fn ) 20 fn = selector; 21 data = selector = undefined; 22 } else if ( fn == null ) { 23 if ( typeof selector === "string" ) { 24 // ( types, selector, fn ) 25 fn = data; 26 data = undefined; 27 } else { 28 // ( types, data, fn ) 29 fn = data; 30 data = selector; 31 selector = undefined; 32 } 33 } 34 if ( fn === false ) { 35 fn = returnFalse; 36 } else if ( !fn ) { 37 return this; 38 } 39 40 if ( one === 1 ) { 41 origFn = fn; 42 fn = function( event ) { 43 // Can use an empty set, since event contains the info 44 jQuery().off( event ); 45 return origFn.apply( this, arguments ); 46 }; 47 // Use same guid so caller can remove using origFn 48 fn.guid = origFn.guid || ( origFn.guid = jQuery.guid++ ); 49 } 50 return this.each( function() { 51 jQuery.event.add( this, types, fn, data, selector ); 52 }); 53 }
对应解绑off
1 off: function( types, selector, fn ) { 2 var handleObj, type; 3 if ( types && types.preventDefault && types.handleObj ) { 4 // ( event ) dispatched jQuery.Event 5 handleObj = types.handleObj; 6 jQuery( types.delegateTarget ).off( 7 handleObj.namespace ? handleObj.origType + "." + handleObj.namespace : handleObj.origType, 8 handleObj.selector, 9 handleObj.handler 10 ); 11 return this; 12 } 13 if ( typeof types === "object" ) { 14 // ( types-object [, selector] ) 15 for ( type in types ) { 16 this.off( type, selector, types[ type ] ); 17 } 18 return this; 19 } 20 if ( selector === false || typeof selector === "function" ) { 21 // ( types [, fn] ) 22 fn = selector; 23 selector = undefined; 24 } 25 if ( fn === false ) { 26 fn = returnFalse; 27 } 28 return this.each(function() { 29 jQuery.event.remove( this, types, fn, selector ); 30 }); 31 },
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原文地址：http://www.cnblogs.com/feitan/p/5348491.html
