Heim  >  Artikel  >  Web-Frontend  >  Javascript implementiert Dropdown-Eingabeaufforderungsauswahlbox_Javascript-Fähigkeiten

Javascript implementiert Dropdown-Eingabeaufforderungsauswahlbox_Javascript-Fähigkeiten

WBOY
WBOYOriginal
2016-05-16 15:22:531409Durchsuche

In diesem Artikel wird ein Beispiel für die kombinierte Verwendung von „Auswählen“ und „Vorschlagen“ vorgestellt, das die direkte Auswahl im Dropdown-Menü und die Eingabefilterung im Dropdown-Inhalt unterstützt.
Der Gesamteffekt ist wie folgt:

1. Zuerst müssen Sie die folgenden Dateien importieren

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

Hier ist zu beachten, dass jquery vor select2 platziert werden sollte.
2. Einige Beispiele

<!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="jquery-2.1.4.min.js"></script> 
  <script type="text/javascript" src="select2.min.js"></script> 
  <script type="text/javascript"> 
  $(document).ready(function() { 
    $(".js-example-basic-single").select2(); //单选 
    $(".js-example-basic-multiple").select2(); //多选 
 
    $(".js-example-placeholder-single").select2({ //允许清除 
      placeholder: "Select a state", //默认提示语 
      allowClear: true 
    }); 
 
    $(".js-example-placeholder-multiple").select2({ 
      placeholder: "Select a state" //默认提示语 
    }); 
 
 
    var data = [{ 
      id: 0, 
      text: 'enhancement' 
    }, { 
      id: 1, 
      text: 'bug' 
    }, { 
      id: 2, 
      text: 'duplicate' 
    }, { 
      id: 3, 
      text: 'invalid' 
    }, { 
      id: 4, 
      text: 'wontfix' 
    }]; 
 
    $(".js-example-data-array").select2({ 
      data: data 
    }) 
 
    $(".js-example-data-array-selected").select2({ 
      data: data 
    }) 
 
  }); 
  </script> 
</body> 
 
</html> 

3. Wirkung
Effekt 1

Effekt 2

Es gibt auch einige andere Inhalte, z. B. Unterstützung für das Ausfüllen über die Ajax-Suche, Unterstützung für Eingaben usw. Freunde, die mehr wissen möchten, lesen bitte verwandte Artikel.

Stellungnahme:
Der Inhalt dieses Artikels wird freiwillig von Internetnutzern beigesteuert und das Urheberrecht liegt beim ursprünglichen Autor. Diese Website übernimmt keine entsprechende rechtliche Verantwortung. Wenn Sie Inhalte finden, bei denen der Verdacht eines Plagiats oder einer Rechtsverletzung besteht, wenden Sie sich bitte an admin@php.cn