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javascript - jQuery 无法在属性选择器中的空格后读取单词

转载 作者：太空宇宙 更新时间：2023-11-04 14:10:33 26 4
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这是 Carto 中下拉搜索菜单/过滤器的脚本。在设置 sql 查询之前，该脚本似乎可以正常工作。每当其中一个属性名称中有空格时，脚本只会找到第一个单词，因此数据库中没有匹配项。像“San Deigo”只会返回“San”。变量“input”的值只是第一个词。如果属性没有空格，则脚本可以正常工作。

这可能是 select to 的问题还是有其他问题？

<!DOCTYPE html>
<html>
  <head>
    <title>Searchbox + Dropdown menu + Zoom + CARTO.js</title>
    <meta name="viewport" content="initial-scale=1.0, user-scalable=no" />
    <meta http-equiv="content-type" content="text/html; charset=UTF-8"/>
    <link rel="shortcut icon" href="https://cartodb.com/assets/favicon.ico" />

    <link rel="stylesheet" href="https://cartodb-libs.global.ssl.fastly.net/cartodb.js/v3/3.15/themes/css/cartodb.css" />
    <script src="https://cartodb-libs.global.ssl.fastly.net/cartodb.js/v3/3.15/cartodb.js"></script> 

    <link href="https://cdnjs.cloudflare.com/ajax/libs/select2/4.0.3/css/select2.min.css" rel="stylesheet" />
    <script src="https://cdnjs.cloudflare.com/ajax/libs/select2/4.0.3/js/select2.min.js"></script>

    <style>
      html, body, #map {
        height: 100%;
        padding: 0;
        margin: 0;
      }
      #wraper-city-selector {
        position: absolute;
        top: 20px;
        left: 20px;
      }
      .js-city-selector {
        width: 175px;
      }

    </style>

  </head>
  <body>

    <!-- map div -->
    <div id="map"></div>

    <!-- selector div -->
    <div id="wraper-city-selector">
      <select class="js-city-selector">
        <option value="#" selected disabled>Select a city</option>
      </select>
    </div>

    <!-- legend div -->
    <div class='cartodb-legend category'>
      <div class="legend-title" style="color:#284a59">Cities</div>
        <ul>
          <li><div class="bullet" style="background-color:#5F4690"></div>Populated Place</li>
          <li><div class="bullet" style="background-color:#1D6996"></div>Admin. 1 Capital</li>
          <li><div class="bullet" style="background-color:#38A6A5"></div>Admin. 0 Capital</li>
          <li><div class="bullet" style="background-color:#0F8554"></div>Admin. 1 region Capital</li>
          <li><div class="bullet" style="background-color:#73AF48"></div>Scientific Station</li>
          <li><div class="bullet" style="background-color:#EDAD08"></div>Admin. O region Capital </li>
          <li><div class="bullet" style="background-color:#E17C05"></div>Admin. 0 Capital Alt.</li>
          <li><div class="bullet" style="background-color:#CC503E"></div>Historic Place</li>
          <li><div class="bullet" style="background-color:#94346E"></div>Meteorological Station</li>
        </ul>
      </div>

    <script type="text/cartocss" id="style">
      #layer {
        marker-width: 10;
        marker-fill: ramp([featurecla], (#5F4690, #1D6996, #38A6A5, #0F8554, #73AF48, #EDAD08, #E17C05, #CC503E, #94346E), ("Populated place", "Admin-1 capital", "Admin-0 capital", "Admin-1 region capital", "Scientific station", "Admin-0 region capital", "Admin-0 capital alt", "Historic place", "Meteorological Station"), "=");
        marker-fill-opacity: 0.7;
        marker-allow-overlap: true;
        marker-line-width: 0;
      }
    </script>

    <script type="text/sql" id="query">
      SELECT * FROM populated_places WHERE pop_max > 700000
    </script>

    <script>
      function main() {

        // get selector
        var selector = $(".js-city-selector");

        // get styles & query
           style = $("#style").text(),
            query = $("#query").text(),

        // declare map variable
            map = L.map('map', { 
                  zoomControl: false,
                  center: [41, -3],
                  zoom: 3
                  });

        // add basemap
        L.tileLayer('http://{s}.basemaps.cartocdn.com/light_nolabels/{z}/{x}/{y}.png', {attribution: '&copy; <a href="http://www.openstreetmap.org/copyright">OpenStreetMap</a> contributors, &copy; <a href="http://cartodb.com/attributions">CARTO</a>'}).addTo(map);

        // add cartodb layer
        cartodb.createLayer(map, {
          user_name: 'ramirocartodb',
          type: 'cartodb',
          sublayers: [{
            sql: query,
            cartocss: style,
          }]
        }).addTo(map)
        .done(function(layer){

          // declare sublayer variable
          var cityLayer = layer.getSubLayer(0);

          // populate selector with city names from sublayer data
          var sql = new cartodb.SQL({ user: 'ramirocartodb' });
          sql.execute(query)
            .done(function(data) {
              for (var i = 0; i < data.total_rows; i++) {

                var name = data.rows[i].name;

                selector.append("<option value=" + name + ">" + name + "</option>");
              }
            });

          selector.select2();

          // filter & zoom cities when selecting an option from selector
          selector.change(function(){

            var input = $( ".js-city-selector option:selected" ).val(); 

            console.log("You have selected " + input + ".");

            cityLayer.setSQL(query + " AND name ilike '" + input + "'");

             sql.getBounds(query + " AND name ilike '" + input + 
             "'")
             .done(function(bounds) {

             map.fitBounds(bounds);
             map.setZoom(16);

            });


          });
        });
      }
    window.onload = main;
    </script>

  </body>
</html>

最佳答案

问题所在是

selector.append("<option value=" + name + ">" + name + "</option>");

您需要将属性用引号引起来

selector.append('<option value="' + name + '">' + name + '</option>');

var name = "San Deigo";
$('select').append('<option value="' + name + '">' + name + '</option>');

name = "los angeles";
$('select').append('<option value="' + name + '">' + name + '</option>');


$('select').on('change', function() {
  console.log($(this).val())
})
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<select>
</select>

关于javascript - jQuery 无法在属性选择器中的空格后读取单词，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/47096201/

26 4 0
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