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A text box with the drop-down box function implemented by javascript

Source: Internet
Author: User
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Sometimes we need an optional drop-down box to select the content, but there is a need to customize the input. For this requirement, most websites use a drop-down box and an input text, which can be selected in parallel or by a branch. So what should we do if we want it to look like a drop-down box that can be input or selected?

In fact, we can simulate this effect through css position positioning and a little javascript code.

Copy codeThe Code is as follows:
<! DOCTYPE html>
<Html>
<Head>
<Title> editable drop-down list </title>
<Meta charset = "UTF-8">
<Style>
. List-name-input {
Color: #333;
Font-family: tahoma, 'Microsoft yahei', 'segoe Ui', Arial, 'Microsoft yahei', Simsun, sans-serif;
Font-size: 15px;
Font-weight: bold;
Height: 50px;
Margin: 0px;
Padding: 0px;
Position: relative;
Width: 530px;
}
. List-name-for-select {
Border: 0;
Color: #555;
Height: 20px;
Lighting-color: rgb (255,255,255 );
Line-height: 20px;
Margin: 0 0 10px 0;

Outline-color: #555;
Outline-offset: 0px;
Outline-style: none;
Outline-width: 0px;

Padding: 4px 6px;
Position: absolute;
Top: 1px;
Left: 3px;
Vertical-align: middle;
Width: 486px;
}
. List-name-input-for-select: focus {
Border: 0;
Border-radius: 0;
}
. List-select {
Background-color: # FFF;
Border: 1px # ccc solid;
Border-radius: 4px;
Color: #555;
Cursor: pointer;
Height: 30px;
Left: 0px;
Margin: 0 0 10px 0;
Padding: 4px 6px;
Position: absolute;
Top: 0px;
Vertical-align: middle;
White-space: pre;
Width: 530px;
}
</Style>
</Head>
<Body>
<Div id = "list-name-input" class = "list-name-input">
<Select type = "text" class = "list-select" id = "list-select">
<Option value = "">
New
</Option>
<Option value = "0">
10-NGCFG-update-1000
</Option>
<Option value = "1">
11-NGCFG-update-1000
</Option>
<Option value = "2">
111
</Option>
<Option value = "3">
12-NGCFG-update-1000
</Option>
<Option value = "4">
13-NGCFG-update-1000
</Option>
<Option value = "5">
14-NGCFG-update-1000
</Option>
<Option value = "6">
15-NGCFG-update-1000
</Option>
<Option value = "7">
16-NGCFG-update-1000
</Option>
<Option value = "8">
17-NGCFG-update-1000
</Option>
<Option value = "9">
18-NGCFG-update-1257
</Option>
<Option value = "10">
2-NGCFG-update-100
</Option>
<Option value = "11">
3-NGCFG-update-150
</Option>
<Option value = "12">
4-NGCFG-update-200
</Option>
<Option value = "13">
5-NGCG-update-250
</Option>
<Option value = "14">
6-NGCFG-update-418
</Option>
<Option value = "15">
7-NGCFG-update-500
</Option>
<Option value = "16">
8-NGCFG-update-1000
</Option>
<Option value = "17">
9-NGCFG-update-1000
</Option>
<Option value = "18">
@ ALL
</Option>
<Option value = "19">
@ CNC-BJ-4
</Option>
<Option value = "20">
CNC-BJ -- Test
</Option>
<Option value = "21">
Test
</Option>
</Select>
<Input type = "text" class = "name item-width list-name-for-select" id = "list-name-for-select">
</Div>

<Script>
Var listName = document. getElementById ('LIST-name-for-select ');
Var listSelect = document. getElementById ('LIST-select'). onchange = function (e ){
Console. log (this)
If (this. value ){
ListName. value = this. value + '|' + this. options [this. selectedIndex]. text;
} Else {
ListName. value =''
}
};
</Script>
</Body>
</Html>

This article is an English version of an article which is originally in the Chinese language on aliyun.com and is provided for information purposes only. This website makes no representation or warranty of any kind, either expressed or implied, as to the accuracy, completeness ownership or reliability of the article or any translations thereof. If you have any concerns or complaints relating to the article, please send an email, providing a detailed description of the concern or complaint, to info-contact@alibabacloud.com. A staff member will contact you within 5 working days. Once verified, infringing content will be removed immediately.

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