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comparison default/node_modules/jquery/src/attributes/val.js @ 0:1d038bc9b3d2 default tip

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Up:default
author Liny <dev@neowd.com>
date Sat, 31 May 2025 09:21:51 +0800
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-1:000000000000 0:1d038bc9b3d2
1 define( [
2 "../core",
3 "../core/stripAndCollapse",
4 "./support",
5 "../core/nodeName",
6 "../var/isFunction",
7
8 "../core/init"
9 ], function( jQuery, stripAndCollapse, support, nodeName, isFunction ) {
10
11 "use strict";
12
13 var rreturn = /\r/g;
14
15 jQuery.fn.extend( {
16 val: function( value ) {
17 var hooks, ret, valueIsFunction,
18 elem = this[ 0 ];
19
20 if ( !arguments.length ) {
21 if ( elem ) {
22 hooks = jQuery.valHooks[ elem.type ] ||
23 jQuery.valHooks[ elem.nodeName.toLowerCase() ];
24
25 if ( hooks &&
26 "get" in hooks &&
27 ( ret = hooks.get( elem, "value" ) ) !== undefined
28 ) {
29 return ret;
30 }
31
32 ret = elem.value;
33
34 // Handle most common string cases
35 if ( typeof ret === "string" ) {
36 return ret.replace( rreturn, "" );
37 }
38
39 // Handle cases where value is null/undef or number
40 return ret == null ? "" : ret;
41 }
42
43 return;
44 }
45
46 valueIsFunction = isFunction( value );
47
48 return this.each( function( i ) {
49 var val;
50
51 if ( this.nodeType !== 1 ) {
52 return;
53 }
54
55 if ( valueIsFunction ) {
56 val = value.call( this, i, jQuery( this ).val() );
57 } else {
58 val = value;
59 }
60
61 // Treat null/undefined as ""; convert numbers to string
62 if ( val == null ) {
63 val = "";
64
65 } else if ( typeof val === "number" ) {
66 val += "";
67
68 } else if ( Array.isArray( val ) ) {
69 val = jQuery.map( val, function( value ) {
70 return value == null ? "" : value + "";
71 } );
72 }
73
74 hooks = jQuery.valHooks[ this.type ] || jQuery.valHooks[ this.nodeName.toLowerCase() ];
75
76 // If set returns undefined, fall back to normal setting
77 if ( !hooks || !( "set" in hooks ) || hooks.set( this, val, "value" ) === undefined ) {
78 this.value = val;
79 }
80 } );
81 }
82 } );
83
84 jQuery.extend( {
85 valHooks: {
86 option: {
87 get: function( elem ) {
88
89 var val = jQuery.find.attr( elem, "value" );
90 return val != null ?
91 val :
92
93 // Support: IE <=10 - 11 only
94 // option.text throws exceptions (#14686, #14858)
95 // Strip and collapse whitespace
96 // https://html.spec.whatwg.org/#strip-and-collapse-whitespace
97 stripAndCollapse( jQuery.text( elem ) );
98 }
99 },
100 select: {
101 get: function( elem ) {
102 var value, option, i,
103 options = elem.options,
104 index = elem.selectedIndex,
105 one = elem.type === "select-one",
106 values = one ? null : [],
107 max = one ? index + 1 : options.length;
108
109 if ( index < 0 ) {
110 i = max;
111
112 } else {
113 i = one ? index : 0;
114 }
115
116 // Loop through all the selected options
117 for ( ; i < max; i++ ) {
118 option = options[ i ];
119
120 // Support: IE <=9 only
121 // IE8-9 doesn't update selected after form reset (#2551)
122 if ( ( option.selected || i === index ) &&
123
124 // Don't return options that are disabled or in a disabled optgroup
125 !option.disabled &&
126 ( !option.parentNode.disabled ||
127 !nodeName( option.parentNode, "optgroup" ) ) ) {
128
129 // Get the specific value for the option
130 value = jQuery( option ).val();
131
132 // We don't need an array for one selects
133 if ( one ) {
134 return value;
135 }
136
137 // Multi-Selects return an array
138 values.push( value );
139 }
140 }
141
142 return values;
143 },
144
145 set: function( elem, value ) {
146 var optionSet, option,
147 options = elem.options,
148 values = jQuery.makeArray( value ),
149 i = options.length;
150
151 while ( i-- ) {
152 option = options[ i ];
153
154 /* eslint-disable no-cond-assign */
155
156 if ( option.selected =
157 jQuery.inArray( jQuery.valHooks.option.get( option ), values ) > -1
158 ) {
159 optionSet = true;
160 }
161
162 /* eslint-enable no-cond-assign */
163 }
164
165 // Force browsers to behave consistently when non-matching value is set
166 if ( !optionSet ) {
167 elem.selectedIndex = -1;
168 }
169 return values;
170 }
171 }
172 }
173 } );
174
175 // Radios and checkboxes getter/setter
176 jQuery.each( [ "radio", "checkbox" ], function() {
177 jQuery.valHooks[ this ] = {
178 set: function( elem, value ) {
179 if ( Array.isArray( value ) ) {
180 return ( elem.checked = jQuery.inArray( jQuery( elem ).val(), value ) > -1 );
181 }
182 }
183 };
184 if ( !support.checkOn ) {
185 jQuery.valHooks[ this ].get = function( elem ) {
186 return elem.getAttribute( "value" ) === null ? "on" : elem.value;
187 };
188 }
189 } );
190
191 } );