attr.js 3.2 KB

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  1. define([
  2. "../core",
  3. "../var/rnotwhite",
  4. "../var/strundefined",
  5. "../core/access",
  6. "./support",
  7. "../selector"
  8. ], function( jQuery, rnotwhite, strundefined, access, support ) {
  9. var nodeHook, boolHook,
  10. attrHandle = jQuery.expr.attrHandle;
  11. jQuery.fn.extend({
  12. attr: function( name, value ) {
  13. return access( this, jQuery.attr, name, value, arguments.length > 1 );
  14. },
  15. removeAttr: function( name ) {
  16. return this.each(function() {
  17. jQuery.removeAttr( this, name );
  18. });
  19. }
  20. });
  21. jQuery.extend({
  22. attr: function( elem, name, value ) {
  23. var hooks, ret,
  24. nType = elem.nodeType;
  25. // don't get/set attributes on text, comment and attribute nodes
  26. if ( !elem || nType === 3 || nType === 8 || nType === 2 ) {
  27. return;
  28. }
  29. // Fallback to prop when attributes are not supported
  30. if ( typeof elem.getAttribute === strundefined ) {
  31. return jQuery.prop( elem, name, value );
  32. }
  33. // All attributes are lowercase
  34. // Grab necessary hook if one is defined
  35. if ( nType !== 1 || !jQuery.isXMLDoc( elem ) ) {
  36. name = name.toLowerCase();
  37. hooks = jQuery.attrHooks[ name ] ||
  38. ( jQuery.expr.match.bool.test( name ) ? boolHook : nodeHook );
  39. }
  40. if ( value !== undefined ) {
  41. if ( value === null ) {
  42. jQuery.removeAttr( elem, name );
  43. } else if ( hooks && "set" in hooks && (ret = hooks.set( elem, value, name )) !== undefined ) {
  44. return ret;
  45. } else {
  46. elem.setAttribute( name, value + "" );
  47. return value;
  48. }
  49. } else if ( hooks && "get" in hooks && (ret = hooks.get( elem, name )) !== null ) {
  50. return ret;
  51. } else {
  52. ret = jQuery.find.attr( elem, name );
  53. // Non-existent attributes return null, we normalize to undefined
  54. return ret == null ?
  55. undefined :
  56. ret;
  57. }
  58. },
  59. removeAttr: function( elem, value ) {
  60. var name, propName,
  61. i = 0,
  62. attrNames = value && value.match( rnotwhite );
  63. if ( attrNames && elem.nodeType === 1 ) {
  64. while ( (name = attrNames[i++]) ) {
  65. propName = jQuery.propFix[ name ] || name;
  66. // Boolean attributes get special treatment (#10870)
  67. if ( jQuery.expr.match.bool.test( name ) ) {
  68. // Set corresponding property to false
  69. elem[ propName ] = false;
  70. }
  71. elem.removeAttribute( name );
  72. }
  73. }
  74. },
  75. attrHooks: {
  76. type: {
  77. set: function( elem, value ) {
  78. if ( !support.radioValue && value === "radio" &&
  79. jQuery.nodeName( elem, "input" ) ) {
  80. var val = elem.value;
  81. elem.setAttribute( "type", value );
  82. if ( val ) {
  83. elem.value = val;
  84. }
  85. return value;
  86. }
  87. }
  88. }
  89. }
  90. });
  91. // Hooks for boolean attributes
  92. boolHook = {
  93. set: function( elem, value, name ) {
  94. if ( value === false ) {
  95. // Remove boolean attributes when set to false
  96. jQuery.removeAttr( elem, name );
  97. } else {
  98. elem.setAttribute( name, name );
  99. }
  100. return name;
  101. }
  102. };
  103. jQuery.each( jQuery.expr.match.bool.source.match( /\w+/g ), function( i, name ) {
  104. var getter = attrHandle[ name ] || jQuery.find.attr;
  105. attrHandle[ name ] = function( elem, name, isXML ) {
  106. var ret, handle;
  107. if ( !isXML ) {
  108. // Avoid an infinite loop by temporarily removing this function from the getter
  109. handle = attrHandle[ name ];
  110. attrHandle[ name ] = ret;
  111. ret = getter( elem, name, isXML ) != null ?
  112. name.toLowerCase() :
  113. null;
  114. attrHandle[ name ] = handle;
  115. }
  116. return ret;
  117. };
  118. });
  119. });