您需要从 bootstrap-tagsinput 插件中删除以下代码,
// Ignore items allready added
var existing = $.grep(self.itemsArray, function(item) { return self.options.itemValue(item) === itemValue; } )[0];
if (existing) {
// Invoke onTagExists
if (self.options.onTagExists) {
var $existingTag = $(".tag", self.$container).filter(function() { return $(this).data("item") === existing; });
self.options.onTagExists(item, $existingTag);
}
return;
}
这是行https://github.com/TimSchlechter/bootstrap-tagsinput/blob/master/src/bootstrap-tagsinput.js#L91
但这不是个好主意,所以我为此提供了猴子补丁,
/**
* HtmlEncodes the given value
*/
var htmlEncodeContainer = $('<div />');
function htmlEncode(value) {
if (value) {
return htmlEncodeContainer.text(value).html();
} else {
return '';
}
}
$.fn.tagsinput.Constructor.prototype.add = function (item, dontPushVal) {
var self = this;
if (self.options.maxTags && self.itemsArray.length >= self.options.maxTags)
return;
// Ignore falsey values, except false
if (item !== false && !item)
return;
// Throw an error when trying to add an object while the itemValue option was not set
if (typeof item === "object" && !self.objectItems)
throw("Can't add objects when itemValue option is not set");
// Ignore strings only containg whitespace
if (item.toString().match(/^\s*$/))
return;
// If SELECT but not multiple, remove current tag
if (self.isSelect && !self.multiple && self.itemsArray.length > 0)
self.remove(self.itemsArray[0]);
if (typeof item === "string" && this.$element[0].tagName === 'INPUT') {
var items = item.split(',');
if (items.length > 1) {
for (var i = 0; i < items.length; i++) {
this.add(items[i], true);
}
if (!dontPushVal)
self.pushVal();
return;
}
}
var itemValue = self.options.itemValue(item),
itemText = self.options.itemText(item),
tagClass = self.options.tagClass(item);
// Ignore items allready added
var existing = $.grep(self.itemsArray, function(item) { return self.options.itemValue(item) === itemValue; } )[0];
if (existing) {
// Invoke onTagExists
if (self.options.onTagExists) {
var $existingTag = $(".tag", self.$container).filter(function() { return $(this).data("item") === existing; });
self.options.onTagExists(item, $existingTag);
}
}
// register item in internal array and map
self.itemsArray.push(item);
// add a tag element
var $tag = $('<span class="tag ' + htmlEncode(tagClass) + '">' + htmlEncode(itemText) + '<span data-role="remove"></span></span>');
$tag.data('item', item);
self.findInputWrapper().before($tag);
$tag.after(' ');
// add <option /> if item represents a value not present in one of the <select />'s options
if (self.isSelect && !$('option[value="' + escape(itemValue) + '"]',self.$element)[0]) {
var $option = $('<option selected>' + htmlEncode(itemText) + '</option>');
$option.data('item', item);
$option.attr('value', itemValue);
self.$element.append($option);
}
if (!dontPushVal)
self.pushVal();
// Add class when reached maxTags
if (self.options.maxTags === self.itemsArray.length)
self.$container.addClass('bootstrap-tagsinput-max');
self.$element.trigger($.Event('itemAdded', { item: item }));
}
这是JsFiddle 演示