jQuery ComboBox - 列表中选项的事件(鼠标输入/悬停)
jQuery ComboBox - Event (mouse enter / hover) for options in list
我正在使用找到的代码示例 here 并想添加一个函数,当用户将鼠标悬停在组合框中的选项上时,该函数将创建一个带有消息的工具提示。每个选项的工具提示必须出现在悬停时。
在这个阶段,我只想触发事件,其中的消息本身可以是我稍后定义的任何内容。有人可以帮忙吗?
这是我的代码:
$( function() {
$.widget( "custom.combobox", {
_create: function() {
this.wrapper = $( "<span>" )
.addClass( "custom-combobox" )
.insertAfter( this.element );
this.element.hide();
this._createAutocomplete();
this._createShowAllButton();
this._hoverOption();
},
/*
*
* Hover Event
*
*/
_hoverOption: function() {},
_createAutocomplete: function() {
var selected = this.element.children( ":selected" ),
value = selected.val() ? selected.text() : "";
this.input = $( "<input>" )
.appendTo( this.wrapper )
.val( value )
.attr( "title", "" )
.addClass( "custom-combobox-input ui-widget ui-widget-content ui-state-default ui-corner-left" )
.autocomplete({
delay: 0,
minLength: 0,
source: $.proxy( this, "_source" )
})
.tooltip({
classes: {
"ui-tooltip": "ui-state-highlight"
}
});
this._on( this.input, {
autocompleteselect: function( event, ui ) {
ui.item.option.selected = true;
this._trigger( "select", event, {
item: ui.item.option
});
},
autocompletechange: "_removeIfInvalid"
});
},
_createShowAllButton: function() {
var input = this.input,
wasOpen = false;
$( "<a>" )
.attr( "tabIndex", -1 )
.attr( "title", "Show All Items" )
.tooltip()
.appendTo( this.wrapper )
.button({
icons: {
primary: "ui-icon-triangle-1-s"
},
text: false
})
.removeClass( "ui-corner-all" )
.addClass( "custom-combobox-toggle ui-corner-right" )
.on( "mousedown", function() {
wasOpen = input.autocomplete( "widget" ).is( ":visible" );
})
.on( "click", function() {
input.trigger( "focus" );
// Close if already visible
if ( wasOpen ) {
return;
}
// Pass empty string as value to search for, displaying all results
input.autocomplete( "search", "" );
});
},
_source: function( request, response ) {
var matcher = new RegExp( $.ui.autocomplete.escapeRegex(request.term), "i" );
var result = [];
result = this.element.children( "option" ).map(function() {
var text = $( this ).text();
if ( this.value && ( !request.term || matcher.test(text) ) )
return {
label: text,
value: text,
option: this
};
});
if(result.length == 1 && request.term.length > this.options.previousValue.length ){
result[0].option.selected = true;
this._trigger( "select", null, {
item: result[0].option
});
this.input.val(result[0].label);
this.options.previousValue = result[0].label;
}else{
this.options.previousValue = request.term;
}
response(result);
},
_removeIfInvalid: function( event, ui ) {
// Selected an item, nothing to do
if ( ui.item ) {
return;
}
// Search for a match (case-insensitive)
var value = this.input.val(),
valueLowerCase = value.toLowerCase(),
valid = false;
this.element.children( "option" ).each(function() {
if ( $( this ).text().toLowerCase() === valueLowerCase ) {
this.selected = valid = true;
return false;
}
});
// Found a match, nothing to do
if ( valid ) {
return;
}
},
_destroy: function() {
this.wrapper.remove();
this.element.show();
}
});
$( "#combobox" ).combobox();
} );
li.ui-menu-item {
padding-left: 15px;
}
.custom-combobox {
position: relative;
display: inline-block;
margin-right: 40px;
}
.custom-combobox-toggle {
position: absolute;
top: 0;
bottom: 0;
margin-left: -1px;
padding: 0;
}
.custom-combobox-input {
margin: 0;
padding: 5px 10px;
}
<script src="https://code.jquery.com/jquery-1.12.4.js"></script>
<script src="https://code.jquery.com/ui/1.12.1/jquery-ui.js"></script>
<link href="https://code.jquery.com/ui/1.12.1/themes/base/jquery-ui.css" rel="stylesheet"/>
<select id="combobox">
<option value="">Select one...</option>
<option value="good">one</option>
<option value="bad">two</option>
<option value="ugly">three</option>
</select>
在解决这个问题时,请务必记住 jQuery 过程隐藏了原始列表。它创建一个具有 ul li 结构的新列表。
因此,为选项列表创建事件将不适用于悬停,因为用户无法与原始列表交互,因为 jQuery 代表用户执行此操作。
当用户选择一个选项时,jQuery 更新原始选项列表。
因此,为了使 mouseover/hover/mouseenter 事件在这里起作用,它必须绑定到 jQuery 创建的列表。
尝试 mouseover() jQuery 方法。
https://api.jquery.com/mouseover/
$(document).ready(function(){
//For each option in the combobox select
$('select#combobox option').each(function(){
// attach an mouseover event
$(this).on('mouseover', function(){
//your tooltip logic
});
});
});
Fiddle 给你:http://jsfiddle.net/4BTyH/308/
已解决!
请参阅上面我最初的代码 post
查找:
_hoverOption: function() {},
替换为:
_hoverOption: function() {
var input = this.input;
input.autocomplete( "widget" ).each(function() {
$(this).on('mouseenter', "li", function(){
//tooltip logic
});
});
},
可以在数据填充组合框的同时为每个项目填充工具提示:
$.each(prdtFiltered, function() {
producto.append($("<option />").val(this.cod_producto).text(this.producto_nombre).attr("title",this.descripcion));
});
在此示例中,var prdtFIltered 是 json。
我正在使用找到的代码示例 here 并想添加一个函数,当用户将鼠标悬停在组合框中的选项上时,该函数将创建一个带有消息的工具提示。每个选项的工具提示必须出现在悬停时。
在这个阶段,我只想触发事件,其中的消息本身可以是我稍后定义的任何内容。有人可以帮忙吗?
这是我的代码:
$( function() {
$.widget( "custom.combobox", {
_create: function() {
this.wrapper = $( "<span>" )
.addClass( "custom-combobox" )
.insertAfter( this.element );
this.element.hide();
this._createAutocomplete();
this._createShowAllButton();
this._hoverOption();
},
/*
*
* Hover Event
*
*/
_hoverOption: function() {},
_createAutocomplete: function() {
var selected = this.element.children( ":selected" ),
value = selected.val() ? selected.text() : "";
this.input = $( "<input>" )
.appendTo( this.wrapper )
.val( value )
.attr( "title", "" )
.addClass( "custom-combobox-input ui-widget ui-widget-content ui-state-default ui-corner-left" )
.autocomplete({
delay: 0,
minLength: 0,
source: $.proxy( this, "_source" )
})
.tooltip({
classes: {
"ui-tooltip": "ui-state-highlight"
}
});
this._on( this.input, {
autocompleteselect: function( event, ui ) {
ui.item.option.selected = true;
this._trigger( "select", event, {
item: ui.item.option
});
},
autocompletechange: "_removeIfInvalid"
});
},
_createShowAllButton: function() {
var input = this.input,
wasOpen = false;
$( "<a>" )
.attr( "tabIndex", -1 )
.attr( "title", "Show All Items" )
.tooltip()
.appendTo( this.wrapper )
.button({
icons: {
primary: "ui-icon-triangle-1-s"
},
text: false
})
.removeClass( "ui-corner-all" )
.addClass( "custom-combobox-toggle ui-corner-right" )
.on( "mousedown", function() {
wasOpen = input.autocomplete( "widget" ).is( ":visible" );
})
.on( "click", function() {
input.trigger( "focus" );
// Close if already visible
if ( wasOpen ) {
return;
}
// Pass empty string as value to search for, displaying all results
input.autocomplete( "search", "" );
});
},
_source: function( request, response ) {
var matcher = new RegExp( $.ui.autocomplete.escapeRegex(request.term), "i" );
var result = [];
result = this.element.children( "option" ).map(function() {
var text = $( this ).text();
if ( this.value && ( !request.term || matcher.test(text) ) )
return {
label: text,
value: text,
option: this
};
});
if(result.length == 1 && request.term.length > this.options.previousValue.length ){
result[0].option.selected = true;
this._trigger( "select", null, {
item: result[0].option
});
this.input.val(result[0].label);
this.options.previousValue = result[0].label;
}else{
this.options.previousValue = request.term;
}
response(result);
},
_removeIfInvalid: function( event, ui ) {
// Selected an item, nothing to do
if ( ui.item ) {
return;
}
// Search for a match (case-insensitive)
var value = this.input.val(),
valueLowerCase = value.toLowerCase(),
valid = false;
this.element.children( "option" ).each(function() {
if ( $( this ).text().toLowerCase() === valueLowerCase ) {
this.selected = valid = true;
return false;
}
});
// Found a match, nothing to do
if ( valid ) {
return;
}
},
_destroy: function() {
this.wrapper.remove();
this.element.show();
}
});
$( "#combobox" ).combobox();
} );
li.ui-menu-item {
padding-left: 15px;
}
.custom-combobox {
position: relative;
display: inline-block;
margin-right: 40px;
}
.custom-combobox-toggle {
position: absolute;
top: 0;
bottom: 0;
margin-left: -1px;
padding: 0;
}
.custom-combobox-input {
margin: 0;
padding: 5px 10px;
}
<script src="https://code.jquery.com/jquery-1.12.4.js"></script>
<script src="https://code.jquery.com/ui/1.12.1/jquery-ui.js"></script>
<link href="https://code.jquery.com/ui/1.12.1/themes/base/jquery-ui.css" rel="stylesheet"/>
<select id="combobox">
<option value="">Select one...</option>
<option value="good">one</option>
<option value="bad">two</option>
<option value="ugly">three</option>
</select>
在解决这个问题时,请务必记住 jQuery 过程隐藏了原始列表。它创建一个具有 ul li 结构的新列表。
因此,为选项列表创建事件将不适用于悬停,因为用户无法与原始列表交互,因为 jQuery 代表用户执行此操作。
当用户选择一个选项时,jQuery 更新原始选项列表。
因此,为了使 mouseover/hover/mouseenter 事件在这里起作用,它必须绑定到 jQuery 创建的列表。
尝试 mouseover() jQuery 方法。
https://api.jquery.com/mouseover/
$(document).ready(function(){
//For each option in the combobox select
$('select#combobox option').each(function(){
// attach an mouseover event
$(this).on('mouseover', function(){
//your tooltip logic
});
});
});
Fiddle 给你:http://jsfiddle.net/4BTyH/308/
已解决!
请参阅上面我最初的代码 post
查找:
_hoverOption: function() {},
替换为:
_hoverOption: function() {
var input = this.input;
input.autocomplete( "widget" ).each(function() {
$(this).on('mouseenter', "li", function(){
//tooltip logic
});
});
},
可以在数据填充组合框的同时为每个项目填充工具提示:
$.each(prdtFiltered, function() {
producto.append($("<option />").val(this.cod_producto).text(this.producto_nombre).attr("title",this.descripcion));
});
在此示例中,var prdtFIltered 是 json。