动态地将对象值添加到div里面 <p> 标签

Question

单击一个按钮，我想将ap标签添加到现有div中，其中包含对象属性名称的值。

  var foodLoads = {
    orange: 6.7,
    apple: 5.6,
    banana: 12.7,
    grapes: 16.3,
    peach: 2.7,
    pear: 6.5,
    mango: 16.1,
    blueberries: 9.3,
    grapefruit: 1.7,
    strawberry: 3.5,
    tangerine: 3.1,
    watermelon: 8,
    duck: 0,
    beef: 0,
    chicken: 0,
    ham: 0,
    turkey: 0,
    elk: 0,
    pork: 0,
    fish: 0,
    eggs: 0,
    lamb: 0,
    applejuice: 11.8,
    cranberryjuice: 23.3,
    orangejuice: 14.4,
    carrotjuice: 8.6,
    lemonade: 24.3,
    hotchocolatemix: 10.2,
    tomatojuice: 3.5,
    chocolatemilk: 13.3,
    almondmilk: 0.02,
    soymilk: 4,
    wholewheatbread: 6.1,
    whitebread: 10.7,
    bagel: 30,
    waffle: 13.8,
    pancake: 5.3,
    croissant: 12.2,
    muffin: 28.8,
    englishmuffin: 21.3,
    doughnut: 15.2,
    oatmeal: 12.6,
    quinoa: 20.4,
    wholegrainbread: 7.1 
  }

当用户选中复选框时（这是在他们单击按钮之前）动态创建div。

  $('input').on('ifChecked', function(event) {       
    var liText = $(this).parent().parent().text();
    var wrappedUp = $('<div class="active"><li>' + liText + '</li><select class="serving-size"><option value="1">1</option><option value="2">2</option><option value="3">3</option><option value="4">4</option></select></div>');
    $('.food-list').append(wrappedUp);
    $(wrappedUp).addClass('' + liText + '');        
})

这是我正在谈论的div的一个例子

<ul class="food-list">

    <div class="active Mango">
                 <li>Mango</li>
          <select class="serving-size"><option value="1">1</option><optionvalue="2">2</option><option value="3">3</option><option value="4">4</option>
          </select>
    </div>
</ul>

因此，基本上，单击一个按钮，我希望能够使用该类（即Mango）将其与foodLoads对象中具有相同名称（mango）的属性匹配，将该属性的值放在ap标记中，然后添加它与匹配类（芒果）的div。

这是我试图使用的jQuery。 因为我是jQuery的新手，所以我确信语法都搞砸了。

  $('.submit-items').click(function() {
    $.each( foodLoads, function( key, value ) {
      if ($('.active:contains(' + key + ')')) {
        $(this).append('<p>' + key + '</li>');
      }
})

     })

有任何想法吗？ 提前致谢 ：）

Answer 1

这是一种更简单的方法。

• 从active类中查找li的文本。
• 抬头看它的价值。
• 附加p

喜欢：-

$('.submit-items').click(function() {
   var type = $('.food-list .active li').text();
   var value = foodLoads[type.toLowerCase()];
   $('.' + type).append('<p>' + value + '</p>');
});

演示

 var foodLoads = { orange: 6.7, apple: 5.6, banana: 12.7, grapes: 16.3, peach: 2.7, pear: 6.5, mango: 16.1, blueberries: 9.3, grapefruit: 1.7, strawberry: 3.5, tangerine: 3.1, watermelon: 8, duck: 0, beef: 0, chicken: 0, ham: 0, turkey: 0, elk: 0, pork: 0, fish: 0, eggs: 0, lamb: 0, applejuice: 11.8, cranberryjuice: 23.3, orangejuice: 14.4, carrotjuice: 8.6, lemonade: 24.3, hotchocolatemix: 10.2, tomatojuice: 3.5, chocolatemilk: 13.3, almondmilk: 0.02, soymilk: 4, wholewheatbread: 6.1, whitebread: 10.7, bagel: 30, waffle: 13.8, pancake: 5.3, croissant: 12.2, muffin: 28.8, englishmuffin: 21.3, doughnut: 15.2, oatmeal: 12.6, quinoa: 20.4, wholegrainbread: 7.1 }; $('.submit-items').click(function() { var type = $('.food-list .active li').text(); var value = foodLoads[type.toLowerCase()]; $('.' + type).append('<p>' + value + '</p>'); }); 

 <script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script> <ul class="food-list"> <div class="active Mango"> <li>Mango</li> <select class="serving-size"> <option value="1">1</option> <option value="2">2</option> <option value="3">3</option> <option value="4">4</option> </select> </div> </ul> <button class="submit-items">submit</button>