jQuery.fn.extend({
attr: function( name, value ) {
- var options = name, isFunction = jQuery.isFunction( value );
+ var elem, options, isFunction = jQuery.isFunction(value);
- if ( typeof name === "string" ) {
- // Are we setting the attribute?
- if ( value === undefined ) {
+ if ( typeof name === "string" ) { // A single attribute
+ if ( value === undefined ) { // Query it on first element
return this.length ?
jQuery.attr( this[0], name ) :
null;
-
- // Convert name, value params to options hash format
- } else {
- options = {};
- options[ name ] = value;
+ } else { // Set it on all elements
+ for ( var i = 0, l = this.length; i < l; i++ ) {
+ elem = this[i];
+ if ( isFunction )
+ value = value.call(elem,i);
+ jQuery.attr( elem, name, value );
+ }
}
- }
-
- // For each element...
- for ( var i = 0, l = this.length; i < l; i++ ) {
- var elem = this[i];
-
- // Set all the attributes
- for ( var prop in options ) {
- value = options[prop];
-
- if ( isFunction ) {
- value = value.call( elem, i );
+ } else { // Multiple attributes to set on all
+ options = name;
+ for ( var i = 0, l = this.length; i < l; i++ ) {
+ elem = this[i];
+ for ( name in options ) {
+ value = options[name];
+ if ( jQuery.isFunction(value) )
+ value = value.call(elem,i);
+ jQuery.attr( elem, name, value );
}
-
- jQuery.attr( elem, prop, value );
}
}
return undefined;
}
+ // Typecast once if the value is a number
if ( typeof value === "number" )
value += '';
+
+ var val = value;
return this.each(function(){
+ if(jQuery.isFunction(value)) {
+ val = value.call(this);
+ // Typecast each time if the value is a Function and the appended
+ // value is therefore different each time.
+ if( typeof val === "number" ) val += '';
+ }
+
if ( this.nodeType != 1 )
return;
- if ( jQuery.isArray(value) && /radio|checkbox/.test( this.type ) )
- this.checked = (jQuery.inArray(this.value, value) >= 0 ||
- jQuery.inArray(this.name, value) >= 0);
+ if ( jQuery.isArray(val) && /radio|checkbox/.test( this.type ) )
+ this.checked = (jQuery.inArray(this.value, val) >= 0 ||
+ jQuery.inArray(this.name, val) >= 0);
else if ( jQuery.nodeName( this, "select" ) ) {
- var values = jQuery.makeArray(value);
+ var values = jQuery.makeArray(val);
jQuery( "option", this ).each(function(){
this.selected = (jQuery.inArray( this.value, values ) >= 0 ||
this.selectedIndex = -1;
} else
- this.value = value;
+ this.value = val;
});
}
});
// Using attr for specific style information is now deprecated. Use style insead.
return jQuery.style(elem, name, value);
}
-});
\ No newline at end of file
+});