5
El siguiente jquery que estoy usando en mi página jsp para agregar una opción de autocompletar a un campo de texto que tiene un id mytextfield.Cómo eliminar una propiedad de un artículo que se agregó utilizando jquery
Dentro de la misma página, hay algunos casos en los que voy a tener para eliminar esta función de autocompletar de este campo de texto. (Ese es el mismo campo tendrá que actuar como un campo de texto sin autocompletar en función de las entradas del usuario a los campos y opciones anteriores)
¿Hay alguna manera para que pueda eliminar esta propiedad 'autocompletar' recién agregada del elemento en particular? , eso es de $ ("# mytextfield").
Lo que realmente quiero saber es ¿hay alguna opción para la eliminación de la propiedad añadido
En caso que alguien quiere referirse a que el código de autocompletar, he adjuntado por debajo ..
;(function($) {
$.fn.extend({
autocomplete: function(urlOrData, options) {
var isUrl = typeof urlOrData == "string";
options = $.extend({}, $.Autocompleter.defaults, {
url: isUrl ? urlOrData : null,
data: isUrl ? null : urlOrData,
delay: isUrl ? $.Autocompleter.defaults.delay : 10,
max: options && !options.scroll ? 10 : 150
}, options);
// if highlight is set to false, replace it with a do-nothing function
options.highlight = options.highlight || function(value) { return value; };
// if the formatMatch option is not specified, then use formatItem for backwards compatibility
options.formatMatch = options.formatMatch || options.formatItem;
return this.each(function() {
new $.Autocompleter(this, options);
});
},
result: function(handler) {
return this.bind("result", handler);
},
search: function(handler) {
return this.trigger("search", [handler]);
},
flushCache: function() {
return this.trigger("flushCache");
},
setOptions: function(options){
return this.trigger("setOptions", [options]);
},
unautocomplete: function() {
return this.trigger("unautocomplete");
}
});
$.Autocompleter = function(input, options) {
var KEY = {
UP: 38,
DOWN: 40,
DEL: 46,
TAB: 9,
RETURN: 13,
ESC: 27,
COMMA: 188,
PAGEUP: 33,
PAGEDOWN: 34,
BACKSPACE: 8
};
// Create $ object for input element
var $input = $(input).attr("autocomplete", "off").addClass(options.inputClass);
var timeout;
var previousValue = "";
var cache = $.Autocompleter.Cache(options);
var hasFocus = 0;
var lastKeyPressCode;
var config = {
mouseDownOnSelect: false
};
var select = $.Autocompleter.Select(options, input, selectCurrent, config);
var blockSubmit;
// prevent form submit in opera when selecting with return key
$.browser.opera && $(input.form).bind("submit.autocomplete", function() {
if (blockSubmit) {
blockSubmit = false;
return false;
}
});
// only opera doesn't trigger keydown multiple times while pressed, others don't work with keypress at all
$input.bind(($.browser.opera ? "keypress" : "keydown") + ".autocomplete", function(event) {
// a keypress means the input has focus
// avoids issue where input had focus before the autocomplete was applied
hasFocus = 1;
// track last key pressed
lastKeyPressCode = event.keyCode;
switch(event.keyCode) {
case KEY.UP:
event.preventDefault();
if (select.visible()) {
select.prev();
} else {
onChange(0, true);
}
break;
case KEY.DOWN:
event.preventDefault();
if (select.visible()) {
select.next();
} else {
onChange(0, true);
}
break;
case KEY.PAGEUP:
event.preventDefault();
if (select.visible()) {
select.pageUp();
} else {
onChange(0, true);
}
break;
case KEY.PAGEDOWN:
event.preventDefault();
if (select.visible()) {
select.pageDown();
} else {
onChange(0, true);
}
break;
// matches also semicolon
case options.multiple && $.trim(options.multipleSeparator) == "," && KEY.COMMA:
case KEY.TAB:
case KEY.RETURN:
if(selectCurrent()) {
// stop default to prevent a form submit, Opera needs special handling
event.preventDefault();
blockSubmit = true;
return false;
}
break;
case KEY.ESC:
select.hide();
break;
default:
clearTimeout(timeout);
timeout = setTimeout(onChange, options.delay);
break;
}
}).focus(function(){
// track whether the field has focus, we shouldn't process any
// results if the field no longer has focus
hasFocus++;
}).blur(function() {
hasFocus = 0;
if (!config.mouseDownOnSelect) {
hideResults();
}
}).click(function() {
// show select when clicking in a focused field
if (hasFocus++ > 1 && !select.visible()) {
onChange(0, true);
}
}).bind("search", function() {
// TODO why not just specifying both arguments?
var fn = (arguments.length > 1) ? arguments[1] : null;
function findValueCallback(q, data) {
var result;
if(data && data.length) {
for (var i=0; i < data.length; i++) {
if(data[i].result.toLowerCase() == q.toLowerCase()) {
result = data[i];
break;
}
}
}
if(typeof fn == "function") fn(result);
else $input.trigger("result", result && [result.data, result.value]);
}
$.each(trimWords($input.val()), function(i, value) {
request(value, findValueCallback, findValueCallback);
});
}).bind("flushCache", function() {
cache.flush();
}).bind("setOptions", function() {
$.extend(options, arguments[1]);
// if we've updated the data, repopulate
if ("data" in arguments[1])
cache.populate();
}).bind("unautocomplete", function() {
select.unbind();
$input.unbind();
$(input.form).unbind(".autocomplete");
});
function selectCurrent() {
var selected = select.selected();
if(!selected)
return false;
var v = selected.result;
previousValue = v;
if (options.multiple) {
var words = trimWords($input.val());
if (words.length > 1) {
var seperator = options.multipleSeparator.length;
var cursorAt = $(input).selection().start;
var wordAt, progress = 0;
$.each(words, function(i, word) {
progress += word.length;
if (cursorAt <= progress) {
wordAt = i;
return false;
}
progress += seperator;
});
words[wordAt] = v;
// TODO this should set the cursor to the right position, but it gets overriden somewhere
//$.Autocompleter.Selection(input, progress + seperator, progress + seperator);
v = words.join(options.multipleSeparator);
}
v += options.multipleSeparator;
}
$input.val(v);
hideResultsNow();
$input.trigger("result", [selected.data, selected.value]);
return true;
}
function onChange(crap, skipPrevCheck) {
if(lastKeyPressCode == KEY.DEL) {
select.hide();
return;
}
var currentValue = $input.val();
if (!skipPrevCheck && currentValue == previousValue)
return;
previousValue = currentValue;
currentValue = lastWord(currentValue);
if (currentValue.length >= options.minChars) {
$input.addClass(options.loadingClass);
if (!options.matchCase)
currentValue = currentValue.toLowerCase();
request(currentValue, receiveData, hideResultsNow);
} else {
stopLoading();
select.hide();
}
};
function trimWords(value) {
if (!value)
return [""];
if (!options.multiple)
return [$.trim(value)];
return $.map(value.split(options.multipleSeparator), function(word) {
return $.trim(value).length ? $.trim(word) : null;
});
}
function lastWord(value) {
if (!options.multiple)
return value;
var words = trimWords(value);
if (words.length == 1)
return words[0];
var cursorAt = $(input).selection().start;
if (cursorAt == value.length) {
words = trimWords(value)
} else {
words = trimWords(value.replace(value.substring(cursorAt), ""));
}
return words[words.length - 1];
}
// fills in the input box w/the first match (assumed to be the best match)
// q: the term entered
// sValue: the first matching result
function autoFill(q, sValue){
// autofill in the complete box w/the first match as long as the user hasn't entered in more data
// if the last user key pressed was backspace, don't autofill
if(options.autoFill && (lastWord($input.val()).toLowerCase() == q.toLowerCase()) && lastKeyPressCode != KEY.BACKSPACE) {
// fill in the value (keep the case the user has typed)
$input.val($input.val() + sValue.substring(lastWord(previousValue).length));
// select the portion of the value not typed by the user (so the next character will erase)
$(input).selection(previousValue.length, previousValue.length + sValue.length);
}
};
function hideResults() {
clearTimeout(timeout);
timeout = setTimeout(hideResultsNow, 200);
};
function hideResultsNow() {
var wasVisible = select.visible();
select.hide();
clearTimeout(timeout);
stopLoading();
if (options.mustMatch) {
// call search and run callback
$input.search(
function (result){
// if no value found, clear the input box
if(!result) {
if (options.multiple) {
var words = trimWords($input.val()).slice(0, -1);
$input.val(words.join(options.multipleSeparator) + (words.length ? options.multipleSeparator : ""));
}
else {
$input.val("");
$input.trigger("result", null);
}
}
}
);
}
};
function receiveData(q, data) {
if (data && data.length && hasFocus) {
stopLoading();
select.display(data, q);
autoFill(q, data[0].value);
select.show();
} else {
hideResultsNow();
}
};
function request(term, success, failure) {
if (!options.matchCase)
term = term.toLowerCase();
var data = cache.load(term);
// recieve the cached data
if (data && data.length) {
success(term, data);
// if an AJAX url has been supplied, try loading the data now
} else if((typeof options.url == "string") && (options.url.length > 0)){
var extraParams = {
timestamp: +new Date()
};
$.each(options.extraParams, function(key, param) {
extraParams[key] = typeof param == "function" ? param() : param;
});
$.ajax({
// try to leverage ajaxQueue plugin to abort previous requests
mode: "abort",
// limit abortion to this input
port: "autocomplete" + input.name,
dataType: options.dataType,
url: options.url,
data: $.extend({
q: lastWord(term),
limit: options.max
}, extraParams),
success: function(data) {
var parsed = options.parse && options.parse(data) || parse(data);
cache.add(term, parsed);
success(term, parsed);
}
});
} else {
// if we have a failure, we need to empty the list -- this prevents the the [TAB] key from selecting the last successful match
select.emptyList();
failure(term);
}
};
function parse(data) {
var parsed = [];
var rows = data.split("\n");
for (var i=0; i < rows.length; i++) {
var row = $.trim(rows[i]);
if (row) {
row = row.split("|");
parsed[parsed.length] = {
data: row,
value: row[0],
result: options.formatResult && options.formatResult(row, row[0]) || row[0]
};
}
}
return parsed;
};
function stopLoading() {
$input.removeClass(options.loadingClass);
};
};
$.Autocompleter.defaults = {
inputClass: "ac_input",
resultsClass: "ac_results",
loadingClass: "ac_loading",
minChars: 1,
delay: 400,
matchCase: false,
matchSubset: true,
matchContains: false,
cacheLength: 10,
max: 100,
mustMatch: false,
extraParams: {},
selectFirst: true,
formatItem: function(row) { return row[0]; },
formatMatch: null,
autoFill: false,
width: 0,
multiple: false,
multipleSeparator: ", ",
highlight: function(value, term) {
return value.replace(new RegExp("(?![^&;]+;)(?!<[^<>]*)(" + term.replace(/([\^\$\(\)\[\]\{\}\*\.\+\?\|\\])/gi, "\\$1") + ")(?![^<>]*>)(?![^&;]+;)", "gi"), "<strong>$1</strong>");
},
scroll: true,
scrollHeight: 180
};
$.Autocompleter.Cache = function(options) {
var data = {};
var length = 0;
function matchSubset(s, sub) {
if (!options.matchCase)
s = s.toLowerCase();
var i = s.indexOf(sub);
if (options.matchContains == "word"){
i = s.toLowerCase().search("\\b" + sub.toLowerCase());
}
if (i == -1) return false;
return i == 0 || options.matchContains;
};
function add(q, value) {
if (length > options.cacheLength){
flush();
}
if (!data[q]){
length++;
}
data[q] = value;
}
function populate(){
if(!options.data) return false;
// track the matches
var stMatchSets = {},
nullData = 0;
// no url was specified, we need to adjust the cache length to make sure it fits the local data store
if(!options.url) options.cacheLength = 1;
// track all options for minChars = 0
stMatchSets[""] = [];
// loop through the array and create a lookup structure
for (var i = 0, ol = options.data.length; i < ol; i++) {
var rawValue = options.data[i];
// if rawValue is a string, make an array otherwise just reference the array
rawValue = (typeof rawValue == "string") ? [rawValue] : rawValue;
var value = options.formatMatch(rawValue, i+1, options.data.length);
if (value === false)
continue;
var firstChar = value.charAt(0).toLowerCase();
// if no lookup array for this character exists, look it up now
if(!stMatchSets[firstChar])
stMatchSets[firstChar] = [];
// if the match is a string
var row = {
value: value,
data: rawValue,
result: options.formatResult && options.formatResult(rawValue) || value
};
// push the current match into the set list
stMatchSets[firstChar].push(row);
// keep track of minChars zero items
if (nullData++ < options.max) {
stMatchSets[""].push(row);
}
};
// add the data items to the cache
$.each(stMatchSets, function(i, value) {
// increase the cache size
options.cacheLength++;
// add to the cache
add(i, value);
});
}
// populate any existing data
setTimeout(populate, 25);
function flush(){
data = {};
length = 0;
}
return {
flush: flush,
add: add,
populate: populate,
load: function(q) {
if (!options.cacheLength || !length)
return null;
/*
* if dealing w/local data and matchContains than we must make sure
* to loop through all the data collections looking for matches
*/
if(!options.url && options.matchContains){
// track all matches
var csub = [];
// loop through all the data grids for matches
for(var k in data){
// don't search through the stMatchSets[""] (minChars: 0) cache
// this prevents duplicates
if(k.length > 0){
var c = data[k];
$.each(c, function(i, x) {
// if we've got a match, add it to the array
if (matchSubset(x.value, q)) {
csub.push(x);
}
});
}
}
return csub;
} else
// if the exact item exists, use it
if (data[q]){
return data[q];
} else
if (options.matchSubset) {
for (var i = q.length - 1; i >= options.minChars; i--) {
var c = data[q.substr(0, i)];
if (c) {
var csub = [];
$.each(c, function(i, x) {
if (matchSubset(x.value, q)) {
csub[csub.length] = x;
}
});
return csub;
}
}
}
return null;
}
};
};
$.Autocompleter.Select = function (options, input, select, config) {
var CLASSES = {
ACTIVE: "ac_over"
};
var listItems,
active = -1,
data,
term = "",
needsInit = true,
element,
list;
// Create results
function init() {
if (!needsInit)
return;
element = $("<div/>")
.hide()
.addClass(options.resultsClass)
.css("position", "absolute")
.appendTo(document.body);
list = $("<ul/>").appendTo(element).mouseover(function(event) {
if(target(event).nodeName && target(event).nodeName.toUpperCase() == 'LI') {
active = $("li", list).removeClass(CLASSES.ACTIVE).index(target(event));
$(target(event)).addClass(CLASSES.ACTIVE);
}
}).click(function(event) {
$(target(event)).addClass(CLASSES.ACTIVE);
select();
// TODO provide option to avoid setting focus again after selection? useful for cleanup-on-focus
input.focus();
return false;
}).mousedown(function() {
config.mouseDownOnSelect = true;
}).mouseup(function() {
config.mouseDownOnSelect = false;
});
if(options.width > 0)
element.css("width", options.width);
needsInit = false;
}
function target(event) {
var element = event.target;
while(element && element.tagName != "LI")
element = element.parentNode;
// more fun with IE, sometimes event.target is empty, just ignore it then
if(!element)
return [];
return element;
}
function moveSelect(step) {
listItems.slice(active, active + 1).removeClass(CLASSES.ACTIVE);
movePosition(step);
var activeItem = listItems.slice(active, active + 1).addClass(CLASSES.ACTIVE);
if(options.scroll) {
var offset = 0;
listItems.slice(0, active).each(function() {
offset += this.offsetHeight;
});
if((offset + activeItem[0].offsetHeight - list.scrollTop()) > list[0].clientHeight) {
list.scrollTop(offset + activeItem[0].offsetHeight - list.innerHeight());
} else if(offset < list.scrollTop()) {
list.scrollTop(offset);
}
}
};
function movePosition(step) {
active += step;
if (active < 0) {
active = listItems.size() - 1;
} else if (active >= listItems.size()) {
active = 0;
}
}
function limitNumberOfItems(available) {
return options.max && options.max < available
? options.max
: available;
}
function fillList() {
list.empty();
var max = limitNumberOfItems(data.length);
for (var i=0; i < max; i++) {
if (!data[i])
continue;
var formatted = options.formatItem(data[i].data, i+1, max, data[i].value, term);
if (formatted === false)
continue;
var li = $("<li/>").html(options.highlight(formatted, term)).addClass(i%2 == 0 ? "ac_even" : "ac_odd").appendTo(list)[0];
$.data(li, "ac_data", data[i]);
}
listItems = list.find("li");
if (options.selectFirst) {
listItems.slice(0, 1).addClass(CLASSES.ACTIVE);
active = 0;
}
// apply bgiframe if available
if ($.fn.bgiframe)
list.bgiframe();
}
return {
display: function(d, q) {
init();
data = d;
term = q;
fillList();
},
next: function() {
moveSelect(1);
},
prev: function() {
moveSelect(-1);
},
pageUp: function() {
if (active != 0 && active - 8 < 0) {
moveSelect(-active);
} else {
moveSelect(-8);
}
},
pageDown: function() {
if (active != listItems.size() - 1 && active + 8 > listItems.size()) {
moveSelect(listItems.size() - 1 - active);
} else {
moveSelect(8);
}
},
hide: function() {
element && element.hide();
listItems && listItems.removeClass(CLASSES.ACTIVE);
active = -1;
},
visible : function() {
return element && element.is(":visible");
},
current: function() {
return this.visible() && (listItems.filter("." + CLASSES.ACTIVE)[0] || options.selectFirst && listItems[0]);
},
show: function() {
var offset = $(input).offset();
element.css({
width: typeof options.width == "string" || options.width > 0 ? options.width : $(input).width(),
top: offset.top + input.offsetHeight,
left: offset.left
}).show();
if(options.scroll) {
list.scrollTop(0);
list.css({
maxHeight: options.scrollHeight,
overflow: 'auto'
});
if($.browser.msie && typeof document.body.style.maxHeight === "undefined") {
var listHeight = 0;
listItems.each(function() {
listHeight += this.offsetHeight;
});
var scrollbarsVisible = listHeight > options.scrollHeight;
list.css('height', scrollbarsVisible ? options.scrollHeight : listHeight);
if (!scrollbarsVisible) {
// IE doesn't recalculate width when scrollbar disappears
listItems.width(list.width() - parseInt(listItems.css("padding-left")) - parseInt(listItems.css("padding-right")));
}
}
}
},
selected: function() {
var selected = listItems && listItems.filter("." + CLASSES.ACTIVE).removeClass(CLASSES.ACTIVE);
return selected && selected.length && $.data(selected[0], "ac_data");
},
emptyList: function(){
list && list.empty();
},
unbind: function() {
element && element.remove();
}
};
};
$.fn.selection = function(start, end) {
if (start !== undefined) {
return this.each(function() {
if(this.createTextRange){
var selRange = this.createTextRange();
if (end === undefined || start == end) {
selRange.move("character", start);
selRange.select();
} else {
selRange.collapse(true);
selRange.moveStart("character", start);
selRange.moveEnd("character", end);
selRange.select();
}
} else if(this.setSelectionRange){
this.setSelectionRange(start, end);
} else if(this.selectionStart){
this.selectionStart = start;
this.selectionEnd = end;
}
});
}
var field = this[0];
if (field.createTextRange) {
var range = document.selection.createRange(),
orig = field.value,
teststring = "<->",
textLength = range.text.length;
range.text = teststring;
var caretAt = field.value.indexOf(teststring);
field.value = orig;
this.selection(caretAt, caretAt + textLength);
return {
start: caretAt,
end: caretAt + textLength
}
} else if(field.selectionStart !== undefined){
return {
start: field.selectionStart,
end: field.selectionEnd
}
}
};
})(jQuery);
Aquí autocompletar es un manualy propiedad definida, por lo que carnero que va a funcionar? –
@SarinJacobSunny sí, creo. – thecodeparadox
Gracias por su trabajo ... :-) –