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javascript实现下拉提示选择框
网络编程 2024/11/20 佚名
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本文介绍了select和sugget结合起来使用的例子，支持下拉的直接选择，也支持在下拉内容中输入过滤。
整体效果就是下面这样的：

javascript实现下拉提示选择框 

1、首先需要引入如下文件 

<link href="select2.min.css" rel="stylesheet" /> 
<script type="text/javascript" src="/UploadFiles/2021-04-02/jquery-2.1.4.min.js">


这里要注意jquery要放在select2的前面。

2、一些实例







<!DOCTYPE html> 
<html lang="en"> 
 
<head> 
  <meta charset="UTF-8"> 
  <title>Document</title> 
  <link href="select2.min.css" rel="stylesheet" /> 
  <style type="text/css"> 
  .select2-dropdown { 
    margin-left: 8px !important; 
    margin-top: 20px !important; 
  } 
  </style> 
</head> 
 
<body> 
  <h1>这是单选例子</h1> 
  <div class="s1-example"> 
    <select class="js-example-basic-single" style="width:200px"> 
      <optgroup label="Alaskan/Hawaiian Time Zone"> 
        <option value="AK">Alaska</option> 
        <option value="HI">Hawaii</option> 
        <option value="">请选择</option> 
      </optgroup> 
      <optgroup label="Pacific Time Zone"> 
        <option value="CA">California1111111111111111111111111111111111111111111111111</option> 
        <option value="NV">Nevada</option> 
        <option value="OR">Oregon</option> 
        <option value="WA">Washington</option> 
      </optgroup> 
      <optgroup label="Mountain Time Zone"> 
        <option value="AZ">Arizona</option> 
        <option value="CO">Colorado</option> 
        <option value="ID">Idaho</option> 
        <option value="MT">Montana</option> 
        <option value="NE">Nebraska</option> 
        <option value="NM">New Mexico</option> 
        <option value="ND">North Dakota</option> 
        <option value="UT">Utah</option> 
        <option value="WY">Wyoming</option> 
      </optgroup> 
      <optgroup label="Central Time Zone"> 
        <option value="AL">Alabama</option> 
        <option value="AR">Arkansas</option> 
        <option value="IL">Illinois</option> 
        <option value="IA">Iowa</option> 
        <option value="KS">Kansas</option> 
        <option value="KY">Kentucky</option> 
        <option value="LA">Louisiana</option> 
        <option value="MN">Minnesota</option> 
        <option value="MS">Mississippi</option> 
        <option value="MO">Missouri</option> 
        <option value="OK">Oklahoma</option> 
        <option value="SD">South Dakota</option> 
        <option value="TX">Texas</option> 
        <option value="TN">Tennessee</option> 
        <option value="WI">Wisconsin</option> 
      </optgroup> 
      <optgroup label="Eastern Time Zone"> 
        <option value="CT">Connecticut</option> 
        <option value="DE">Delaware</option> 
        <option value="FL">Florida</option> 
        <option value="GA">Georgia</option> 
        <option value="IN">Indiana</option> 
        <option value="ME">Maine</option> 
        <option value="MD">Maryland</option> 
        <option value="MA">Massachusetts</option> 
        <option value="MI">Michigan</option> 
        <option value="NH">New Hampshire</option> 
        <option value="NJ">New Jersey</option> 
        <option value="NY">New York</option> 
        <option value="NC">North Carolina</option> 
        <option value="OH">Ohio</option> 
        <option value="PA">Pennsylvania</option> 
        <option value="RI">Rhode Island</option> 
        <option value="SC">South Carolina</option> 
        <option value="VT">Vermont</option> 
        <option value="VA">Virginia</option> 
        <option value="WV">West Virginia</option> 
      </optgroup> 
    </select> 
  </div> 
  <h1>这是多选例子</h1> 
  <div class="s2-example"> 
    <select class="js-example-basic-multiple" multiple="multiple"> 
      <optgroup label="Alaskan/Hawaiian Time Zone"> 
        <option value="AK">Alaska</option> 
        <option value="HI">Hawaii</option> 
        <option value="">请选择</option> 
      </optgroup> 
      <optgroup label="Pacific Time Zone"> 
        <option value="CA">California1111111111111111111111111111111111111111111111111</option> 
        <option value="NV">Nevada</option> 
        <option value="OR">Oregon</option> 
        <option value="WA">Washington</option> 
      </optgroup> 
      <optgroup label="Mountain Time Zone"> 
        <option value="AZ">Arizona</option> 
        <option value="CO">Colorado</option> 
        <option value="ID">Idaho</option> 
        <option value="MT">Montana</option> 
        <option value="NE">Nebraska</option> 
        <option value="NM">New Mexico</option> 
        <option value="ND">North Dakota</option> 
        <option value="UT">Utah</option> 
        <option value="WY">Wyoming</option> 
      </optgroup> 
      <optgroup label="Central Time Zone"> 
        <option value="AL">Alabama</option> 
        <option value="AR">Arkansas</option> 
        <option value="IL">Illinois</option> 
        <option value="IA">Iowa</option> 
        <option value="KS">Kansas</option> 
        <option value="KY">Kentucky</option> 
        <option value="LA">Louisiana</option> 
        <option value="MN">Minnesota</option> 
        <option value="MS">Mississippi</option> 
        <option value="MO">Missouri</option> 
        <option value="OK">Oklahoma</option> 
        <option value="SD">South Dakota</option> 
        <option value="TX">Texas</option> 
        <option value="TN">Tennessee</option> 
        <option value="WI">Wisconsin</option> 
      </optgroup> 
      <optgroup label="Eastern Time Zone"> 
        <option value="CT">Connecticut</option> 
        <option value="DE">Delaware</option> 
        <option value="FL">Florida</option> 
        <option value="GA">Georgia</option> 
        <option value="IN">Indiana</option> 
        <option value="ME">Maine</option> 
        <option value="MD">Maryland</option> 
        <option value="MA">Massachusetts</option> 
        <option value="MI">Michigan</option> 
        <option value="NH">New Hampshire</option> 
        <option value="NJ">New Jersey</option> 
        <option value="NY">New York</option> 
        <option value="NC">North Carolina</option> 
        <option value="OH">Ohio</option> 
        <option value="PA">Pennsylvania</option> 
        <option value="RI">Rhode Island</option> 
        <option value="SC">South Carolina</option> 
        <option value="VT">Vermont</option> 
        <option value="VA">Virginia</option> 
        <option value="WV">West Virginia</option> 
      </optgroup> 
    </select> 
  </div> 
  <h1>这是可清除有提示例子</h1> 
  <div class="s3-example"> 
    <select class="js-example-placeholder-single" style="width:200px"> 
      <optgroup label="Alaskan/Hawaiian Time Zone"> 
        <option value="AK">Alaska</option> 
        <option value="HI">Hawaii</option> 
        <option value="">请选择</option> 
      </optgroup> 
      <optgroup label="Pacific Time Zone"> 
        <option value="CA">California1111111111111111111111111111111111111111111111111</option> 
        <option value="NV">Nevada</option> 
        <option value="OR">Oregon</option> 
        <option value="WA">Washington</option> 
      </optgroup> 
      <optgroup label="Mountain Time Zone"> 
        <option value="AZ">Arizona</option> 
        <option value="CO">Colorado</option> 
        <option value="ID">Idaho</option> 
        <option value="MT">Montana</option> 
        <option value="NE">Nebraska</option> 
        <option value="NM">New Mexico</option> 
        <option value="ND">North Dakota</option> 
        <option value="UT">Utah</option> 
        <option value="WY">Wyoming</option> 
      </optgroup> 
      <optgroup label="Central Time Zone"> 
        <option value="AL">Alabama</option> 
        <option value="AR">Arkansas</option> 
        <option value="IL">Illinois</option> 
        <option value="IA">Iowa</option> 
        <option value="KS">Kansas</option> 
        <option value="KY">Kentucky</option> 
        <option value="LA">Louisiana</option> 
        <option value="MN">Minnesota</option> 
        <option value="MS">Mississippi</option> 
        <option value="MO">Missouri</option> 
        <option value="OK">Oklahoma</option> 
        <option value="SD">South Dakota</option> 
        <option value="TX">Texas</option> 
        <option value="TN">Tennessee</option> 
        <option value="WI">Wisconsin</option> 
      </optgroup> 
      <optgroup label="Eastern Time Zone"> 
        <option value="CT">Connecticut</option> 
        <option value="DE">Delaware</option> 
        <option value="FL">Florida</option> 
        <option value="GA">Georgia</option> 
        <option value="IN">Indiana</option> 
        <option value="ME">Maine</option> 
        <option value="MD">Maryland</option> 
        <option value="MA">Massachusetts</option> 
        <option value="MI">Michigan</option> 
        <option value="NH">New Hampshire</option> 
        <option value="NJ">New Jersey</option> 
        <option value="NY">New York</option> 
        <option value="NC">North Carolina</option> 
        <option value="OH">Ohio</option> 
        <option value="PA">Pennsylvania</option> 
        <option value="RI">Rhode Island</option> 
        <option value="SC">South Carolina</option> 
        <option value="VT">Vermont</option> 
        <option value="VA">Virginia</option> 
        <option value="WV">West Virginia</option> 
      </optgroup> 
    </select> 
  </div> 
  <div class="s4-example"> 
    <select class="js-example-placeholder-multiple" multiple="multiple" style="width:400px"> 
      <optgroup label="Alaskan/Hawaiian Time Zone"> 
        <option value="AK">Alaska</option> 
        <option value="HI">Hawaii</option> 
        <option value="">请选择</option> 
      </optgroup> 
      <optgroup label="Pacific Time Zone"> 
        <option value="CA">California1111111111111111111111111111111111111111111111111</option> 
        <option value="NV">Nevada</option> 
        <option value="OR">Oregon</option> 
        <option value="WA">Washington</option> 
      </optgroup> 
      <optgroup label="Mountain Time Zone"> 
        <option value="AZ">Arizona</option> 
        <option value="CO">Colorado</option> 
        <option value="ID">Idaho</option> 
        <option value="MT">Montana</option> 
        <option value="NE">Nebraska</option> 
        <option value="NM">New Mexico</option> 
        <option value="ND">North Dakota</option> 
        <option value="UT">Utah</option> 
        <option value="WY">Wyoming</option> 
      </optgroup> 
      <optgroup label="Central Time Zone"> 
        <option value="AL">Alabama</option> 
        <option value="AR">Arkansas</option> 
        <option value="IL">Illinois</option> 
        <option value="IA">Iowa</option> 
        <option value="KS">Kansas</option> 
        <option value="KY">Kentucky</option> 
        <option value="LA">Louisiana</option> 
        <option value="MN">Minnesota</option> 
        <option value="MS">Mississippi</option> 
        <option value="MO">Missouri</option> 
        <option value="OK">Oklahoma</option> 
        <option value="SD">South Dakota</option> 
        <option value="TX">Texas</option> 
        <option value="TN">Tennessee</option> 
        <option value="WI">Wisconsin</option> 
      </optgroup> 
      <optgroup label="Eastern Time Zone"> 
        <option value="CT">Connecticut</option> 
        <option value="DE">Delaware</option> 
        <option value="FL">Florida</option> 
        <option value="GA">Georgia</option> 
        <option value="IN">Indiana</option> 
        <option value="ME">Maine</option> 
        <option value="MD">Maryland</option> 
        <option value="MA">Massachusetts</option> 
        <option value="MI">Michigan</option> 
        <option value="NH">New Hampshire</option> 
        <option value="NJ">New Jersey</option> 
        <option value="NY">New York</option> 
        <option value="NC">North Carolina</option> 
        <option value="OH">Ohio</option> 
        <option value="PA">Pennsylvania</option> 
        <option value="RI">Rhode Island</option> 
        <option value="SC">South Carolina</option> 
        <option value="VT">Vermont</option> 
        <option value="VA">Virginia</option> 
        <option value="WV">West Virginia</option> 
      </optgroup> 
    </select> 
  </div> 
  <h1>这是直接使用js对象初始化的例子</h1> 
  <div> 
    <select class="js-example-data-array" style="width:200px"></select> 
  </div> 
  <div> 
    <select class="js-example-data-array-selected" style="width:200px"> 
      <option value="2" selected="selected">duplicate</option> 
    </select> 
  </div> 
 
  <script type="text/javascript" src="/UploadFiles/2021-04-02/jquery-2.1.4.min.js">


3、效果

效果1


javascript实现下拉提示选择框


效果2


javascript实现下拉提示选择框


还有一些其它的内容，比如果说支持通过ajax查找来填充，支持input等，想要了解更多内容的朋友请阅读相关文章。
标签：
javascript,下拉提示,选择框
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