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jquery.bind-first

jquery bind-first plugin

当前为 2014-11-24 提交的版本，查看 最新版本。

此脚本不应直接安装。它是供其他脚本使用的外部库，要使用该库请加入元指令 // @require https://update.cn-greasyfork.org/scripts/2857/25891/jquerybind-first.js 

  1. // ==UserScript==
  2. // @name           jquery.bind-first
  3. // @namespace      private-face
  4. // @description    jquery bind-first plugin
  5. // @source         https://github.com/private-face/jquery.bind-first
  6. // @copyright      Vladimir Zhuravlev
  7. // @version        0.2.3
  8. // @license        MIT
  9. // ==/UserScript==
  10.  
  11.  
  12. /*
  13.  * jQuery.bind-first library v0.2.3
  14.  * Copyright (c) 2013 Vladimir Zhuravlev
  15.  *
  16.  * Released under MIT License
  17.  * @license
  18.  *
  19.  * Date: Thu Feb  6 10:13:59 ICT 2014
  20.  **/
  21. window.addEventListener('load', function () {
  22.  
  23. (function($) {
  24. 	var splitVersion = $.fn.jquery.split(".");
  25. 	var major = parseInt(splitVersion[0]);
  26. 	var minor = parseInt(splitVersion[1]);
  27.  
  28. 	var JQ_LT_17 = (major < 1) || (major == 1 && minor < 7);
  29. 	
  30. 	function eventsData($el) {
  31. 		return JQ_LT_17 ? $el.data('events') : $._data($el[0]).events;
  32. 	}
  33. 	
  34. 	function moveHandlerToTop($el, eventName, isDelegated) {
  35. 		var data = eventsData($el);
  36. 		var events = data[eventName];
  37.  
  38. 		if (!JQ_LT_17) {
  39. 			var handler = isDelegated ? events.splice(events.delegateCount - 1, 1)[0] : events.pop();
  40. 			events.splice(isDelegated ? 0 : (events.delegateCount || 0), 0, handler);
  41.  
  42. 			return;
  43. 		}
  44.  
  45. 		if (isDelegated) {
  46. 			data.live.unshift(data.live.pop());
  47. 		} else {
  48. 			events.unshift(events.pop());
  49. 		}
  50. 	}
  51. 	
  52. 	function moveEventHandlers($elems, eventsString, isDelegate) {
  53. 		var events = eventsString.split(/\s+/);
  54. 		$elems.each(function() {
  55. 			for (var i = 0; i < events.length; ++i) {
  56. 				var pureEventName = $.trim(events[i]).match(/[^\.]+/i)[0];
  57. 				moveHandlerToTop($(this), pureEventName, isDelegate);
  58. 			}
  59. 		});
  60. 	}
  61. 	
  62. 	function makeMethod(methodName) {
  63. 		$.fn[methodName + 'First'] = function() {
  64. 			var args = $.makeArray(arguments);
  65. 			var eventsString = args.shift();
  66.  
  67. 			if (eventsString) {
  68. 				$.fn[methodName].apply(this, arguments);
  69. 				moveEventHandlers(this, eventsString);
  70. 			}
  71.  
  72. 			return this;
  73. 		}
  74. 	}
  75.  
  76. 	// bind
  77. 	makeMethod('bind');
  78.  
  79. 	// one
  80. 	makeMethod('one');
  81.  
  82. 	// delegate
  83. 	$.fn.delegateFirst = function() {
  84. 		var args = $.makeArray(arguments);
  85. 		var eventsString = args[1];
  86. 		
  87. 		if (eventsString) {
  88. 			args.splice(0, 2);
  89. 			$.fn.delegate.apply(this, arguments);
  90. 			moveEventHandlers(this, eventsString, true);
  91. 		}
  92.  
  93. 		return this;
  94. 	};
  95.  
  96. 	// live
  97. 	$.fn.liveFirst = function() {
  98. 		var args = $.makeArray(arguments);
  99.  
  100. 		// live = delegate to the document
  101. 		args.unshift(this.selector);
  102. 		$.fn.delegateFirst.apply($(document), args);
  103.  
  104. 		return this;
  105. 	};
  106. 	
  107. 	// on (jquery >= 1.7)
  108. 	if (!JQ_LT_17) {
  109. 		$.fn.onFirst = function(types, selector) {
  110. 			var $el = $(this);
  111. 			var isDelegated = typeof selector === 'string';
  112.  
  113. 			$.fn.on.apply($el, arguments);
  114.  
  115. 			// events map
  116. 			if (typeof types === 'object') {
  117. 				for (type in types)
  118. 					if (types.hasOwnProperty(type)) {
  119. 						moveEventHandlers($el, type, isDelegated);
  120. 					}
  121. 			} else if (typeof types === 'string') {
  122. 				moveEventHandlers($el, types, isDelegated);
  123. 			}
  124.  
  125. 			return $el;
  126. 		};
  127. 	}
  128.  
  129. })(jQuery);
  130.  
  131. }, false);