【问题标题】:How to execute nested objects for jquery plugins?如何为 jquery 插件执行嵌套对象?
【发布时间】:2023-03-25 21:55:02
【问题描述】:

我尝试学习制作一个简单的 jquery 插件。

这是我的代码

$.fn.TestPlugin = function( options ) {
    var setting = $.extend({
        "image" : [ "image1.jpg", "image2.jpg", "image2.jpg"],
        "select": [
                    {
                        "Label 1": ["opt 1", "opt 2", "opt 3"],
                        "Label 2": ["opt 4", "opt 5", "opt 6", "opt 7"]
                    }
                  ]
    }, options );

    return this.each(function( index ){
        $( this ).wrap( "<div class='container' id='container-"+ [index+1] +"'></div>" );       

        //select
        var $select = "<select>";
            //loop for select

            $select += "</select>";
        $( $select ).appendTo( "#container-"+ [index+1] +"" );
    });
};

我怎样才能得到这样的结果:

<select>
    <optgroup label="Label 1">
        <option>opt 1</option>
        <option>opt 2</option>
        <option>opt 3</option>
    </optgroup>
    <optgroup label="Label 2">
        <option>opt 4</option>
        <option>opt 5</option>
        <option>opt 6</option>
        <option>opt 7</option>
    </optgroup>
</select>

setting.select生成

谢谢

对不起,我的英语很难理解 我用谷歌翻译。

【问题讨论】:

    标签: javascript jquery jquery-plugins nested-object


    【解决方案1】:

    我会直接使用 jQuery 创建元素。然后,正如您已经评论过的,遍历您的设置,创建选择、选择组和选项:

    $.fn.TestPlugin = function( options ) {
        var setting = $.extend({
            "image" : [ "image1.jpg", "image2.jpg", "image2.jpg"],
            "select": [
                        {
                            "Label 1": ["opt 1", "opt 2", "opt 3"],
                            "Label 2": ["opt 4", "opt 5", "opt 6", "opt 7"]
                        }
                      ]
        }, options );
    
        return this.each(function( index ){
            $( this ).wrap( "<div class='container' id='container-"+ [index+1] +"'></div>" );       
    
            for (var i = 0; i < setting.select.length; i++) { // iterate all select definitions
              var sel = setting.select[i];
              var $select = $("<select />"); // create a select element
              for (var lbl in sel) { // iterate all labels
                if (!sel.hasOwnProperty(lbl)) { // ignore inherited members
                  continue;
                }
                var opt = sel[lbl];
                var $optgrp = $('<optgroup />').attr('label', lbl).appendTo($select); // create optgroup and add to select
                for (var j = 0; j < opt.length; j++) { // iterate options
                  $('<option />').text(opt[j]).appendTo($optgrp); // create option and add to optgroup
                }
              }
              $select.appendTo( "#container-"+ [index+1] +"" );
            }
        });
    };
    
    $('ul>li>div').TestPlugin();
    <script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
    <ul>
      <li>
        <div>Select 1</div>
      </li>
      <li>
        <div>Select 2</div>
      </li>
      <li>
        <div>Select 3</div>
      </li>
    </ul>

    【讨论】:

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