Html 可编辑的“选择”元素
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Editable 'Select' element
提问by framara
I would like to have a select element in the form but besides the options in the dropdown, it would be useful to be able to edit it and add new option but not with another input text, I need all in once. Is it possible?
我想在表单中有一个选择元素，但除了下拉列表中的选项之外，能够编辑它并添加新选项而不是其他输入文本会很有用，我需要一次性完成。是否可以？
回答by Arraxas
Nothing is impossible. Here's a solution that simply sets the value of a text input whenever the value of the <select>changes: Demo on JSFiddle
Rendering has been tested on Firefox and Google Chrome.
没有什么是不可能的。这是一个解决方案，它在值<select>更改时简单地设置文本输入的值：JSFiddle
Rendering演示已在 Firefox 和 Google Chrome 上进行了测试。
.select-editable { position:relative; background-color:white; border:solid grey 1px; width:120px; height:18px; }
.select-editable select { position:absolute; top:0px; left:0px; font-size:14px; border:none; width:120px; margin:0; }
.select-editable input { position:absolute; top:0px; left:0px; width:100px; padding:1px; font-size:12px; border:none; }
.select-editable select:focus, .select-editable input:focus { outline:none; }<div class="select-editable">
<select onchange="this.nextElementSibling.value=this.value">
<option value=""></option>
<option value="115x175 mm">115x175 mm</option>
<option value="120x160 mm">120x160 mm</option>
<option value="120x287 mm">120x287 mm</option>
</select>
<input type="text" name="format" value=""/>
</div>You can also do this in HTML5 with the input listattribute and <datalist>element:
您也可以在 HTML5 中使用 inputlist属性和<datalist>元素执行此操作：
<input list="browsers" name="browser">
<datalist id="browsers">
<option value="Internet Explorer">
<option value="Firefox">
<option value="Chrome">
<option value="Opera">
<option value="Safari">
</datalist>
(click once to focus and edit, click again to see option dropdown)回答by camster
Similar to answer above but without the absolute positioning:
类似于上面的答案，但没有绝对定位：
<select style="width: 200px; float: left;" onchange="this.nextElementSibling.value=this.value">
<option></option>
<option>1</option>
<option>2</option>
<option>3</option>
</select>
<input style="width: 185px; margin-left: -199px; margin-top: 1px; border: none; float: left;"/>
So create a input box and put it over the top of the combobox
所以创建一个输入框并将其放在组合框的顶部
回答by Stefan
Based on the other answers, here is a first draft for usage with knockout:
根据其他答案，这里是用于淘汰赛的初稿：
Usage
用法
<div data-bind="editableSelect: {options: optionsObservable, value: nameObservable}"></div>
Knockout data binding
敲除数据绑定
composition.addBindingHandler('editableSelect',
{
init: function(hostElement, valueAccessor) {
var optionsObservable = getOptionsObservable();
var valueObservable = getValueObservable();
var $editableSelect = $(hostElement);
$editableSelect.addClass('select-editable');
var editableSelect = $editableSelect[0];
var viewModel = new editableSelectViewModel(optionsObservable, valueObservable);
ko.applyBindingsToNode(editableSelect, { compose: viewModel });
//tell knockout to not apply bindings twice
return { controlsDescendantBindings: true };
function getOptionsObservable() {
var accessor = valueAccessor();
return getAttribute(accessor, 'options');
}
function getValueObservable() {
var accessor = valueAccessor();
return getAttribute(accessor, 'value');
}
}
});
View
看法
<select
data-bind="options: options, event:{ focus: resetComboBoxValue, change: setTextFieldValue} "
id="comboBox"
></select>
<input
data-bind="value: value, , event:{ focus: textFieldGotFocus, focusout: textFieldLostFocus}"
id="textField"
type="text"/>
ViewModel
视图模型
define([
'lodash',
'services/errorHandler'
], function(
_,
errorhandler
) {
var viewModel = function(optionsObservable, valueObservable) {
var self = this;
self.options = optionsObservable();
self.value = valueObservable;
self.resetComboBoxValue = resetComboBoxValue;
self.setTextFieldValue = setTextFieldValue;
self.textFieldGotFocus = textFieldGotFocus;
self.textFieldLostFocus = textFieldLostFocus;
function resetComboBoxValue() {
$('#comboBox').val(null);
}
function setTextFieldValue() {
var selection = $('#comboBox').val();
self.value(selection);
}
function textFieldGotFocus() {
$('#comboBox').addClass('select-editable-input-focus');
}
function textFieldLostFocus() {
$('#comboBox').removeClass('select-editable-input-focus');
}
};
errorhandler.includeIn(viewModel);
return viewModel;
});
CSS
CSS
.select-editable {
display: block;
width: 100%;
height: 31px;
padding: 6px 12px;
font-size: 12px;
line-height: 1.42857143;
color: #555555;
background-color: #ffffff;
background-image: none;
border: 1px solid #cccccc;
border-radius: 0px;
-webkit-box-shadow: inset 0 1px 1px rgba(0, 0, 0, 0.075);
box-shadow: inset 0 1px 1px rgba(0, 0, 0, 0.075);
-webkit-transition: border-color ease-in-out .15s, -webkit-box-shadow ease-in-out .15s;
-o-transition: border-color ease-in-out .15s, box-shadow ease-in-out .15s;
transition: border-color ease-in-out .15s, box-shadow ease-in-out .15s;padding: 0;
}
.select-editable select {
outline:0;
padding-left: 10px;
border:none;
width:100%;
height: 29px;
}
.select-editable input {
outline:0;
position: relative;
top: -27px;
margin-left: 10px;
width:90%;
height: 25px;
border:none;
}
.select-editable select:focus {
outline:0;
border: 1px solid #66afe9;
-webkit-box-shadow: inset 0 1px 1px rgba(0,0,0,.075), 0 0 8px rgba(102, 175, 233, 0.6);
box-shadow: inset 0 1px 1px rgba(0,0,0,.075), 0 0 8px rgba(102, 175, 233, 0.6);
}
.select-editable input:focus {
outline:0;
}
.select-editable-input-focus {
outline:0;
border: 1px solid #66afe9 !important;
-webkit-box-shadow: inset 0 1px 1px rgba(0,0,0,.075), 0 0 8px rgba(102, 175, 233, 0.6);
box-shadow: inset 0 1px 1px rgba(0,0,0,.075), 0 0 8px rgba(102, 175, 233, 0.6);
}
回答by Tom
A bit more universal <select name="env" style="width: 200px; position:absolute;" onchange="this.nextElementSibling.value=this.value">
<option></option>
<option>1</option>
<option>2</option>
<option>3</option>
</select>
<input style="width: 178px; margin-top: 1px; border: none; position:relative; left:1px; margin-right: 25px;" value="123456789012345678901234"/>layout ...