Shopify添加image before and after slider分区

在Shopify独立站中使用image before and after slider展示使用产品前后的对比效果，能够有效增加转化。

Shopify免费主题并不提供这个功能。下面，我将展示如何在Shopify免费主题Dawn中创建image before and after slider分区。

Shopify后台-在线商店-模板-编辑代码

在theme.liquid中之间添加下面代码

<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.6.3/jquery.min.js"></script>

添加新分区

复制粘贴以下代码，文件image-before-after-slider中：

{% style %}
 .slid_aftr_bfr_container--{{ section.id }} {
   position: relative;
   border: 2px solid white;
  width: {{ section.settings.slider_aftr_bfr_img_width }}px;
    height: {{ section.settings.slider_aftr_bfr_img_sz }}px;
   margin-left: auto;
      margin-right: auto;
}
 .slid_aftr_bfr_container--{{ section.id }} .img_slid_aftr_bfr--{{ section.id }} {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-size: {{ section.settings.slider_aftr_bfr_img_width }}px {{ section.settings.slider_aftr_bfr_img_sz }}px;
  background-repeat: no-repeat;
}
 .slid_aftr_bfr_container--{{ section.id }} .background-img {
   background-image: url('{{section.settings.image_before | img_url: ''}}');
}
 .slid_aftr_bfr_container--{{ section.id }} .foreground-img {
   background-image: url('{{section.settings.image_after | img_url: ''}}');
   width: 50%;
}
 .slid_aftr_bfr_container--{{ section.id }} .slider {
   position: absolute;
   -webkit-appearance: none;
   appearance: none;
   width: 100%;
   height: 100%;
   background: rgba(242, 242, 242, .1);
   outline: none;
   margin: 0;
   transition: all 0.2s;
   display: flex;
   justify-content: center;
   align-items: center;
}
 .slid_aftr_bfr_container--{{ section.id }} .slider::-webkit-slider-thumb {
   -webkit-appearance: none;
   appearance: none;
   width: 2px;
   height: {{ section.settings.slider_aftr_bfr_img_sz }}px;
   background: white;
   cursor: pointer;
}
 .slid_aftr_bfr_container--{{ section.id }} .slider::-moz-range-thumb {
   width: 2px;
   height: 600px;
   background: white;
   cursor: pointer;
}
 .slid_aftr_bfr_container--{{ section.id }} .slider-button {
   pointer-events: none;
   position: absolute;
   width: 30px;
   height: 30px;
   border-radius: 50%;
   background-color: white;
   left: calc(50% - 15px);
   top: calc(50% - 15px);
   display: flex;
   justify-content: center;
   align-items: center;
}
 .slid_aftr_bfr_container--{{ section.id }} .slider-button:after {
   content: '';
   padding: 3px;
   display: inline-block;
   border: solid #5d5d5d;
   border-width: 0 2px 2px 0;
   transform: rotate(-45deg);
}
 .slid_aftr_bfr_container--{{ section.id }} .slider-button:before {
   content: '';
   padding: 3px;
   display: inline-block;
   border: solid #5d5d5d;
   border-width: 0 2px 2px 0;
   transform: rotate(135deg);
}
.before_slider--{{section.id}}::before {
      content: '';
      position: absolute;
      top: 0;
      right: 0;
      bottom: 0;
      left: 0;
      background-color: {{ section.settings.color_slid_aftr_bfr_over}};
      opacity: {{section.settings.slide_aftr_bfr_opacity}}%;
}
@media only screen and (max-width: 749px) {
      .small--hide {
          display: none !important; 
      }
}
@media screen and (min-width: 750px) {
      .medium-up--hide {
          display: none !important;
      }
}
  {% endstyle %}
  <div class="{{ section.settings.slide_aftr_bfr-visibility }} page-width">
                   {% if section.settings.title != blank %}
        <h1 class="title inline-richtext h2">{{ section.settings.title | escape }}</h1>
            {% endif %}
  <div class="slid_aftr_bfr_container--{{ section.id }}">
    <div class='img_slid_aftr_bfr--{{ section.id }} background-img'>.</div>
    <div class='img_slid_aftr_bfr--{{ section.id }} foreground-img {% if section.settings.slid_aftr_bfr_en-over %} before_slider--{{section.id}} {% endif %}'>.</div>
    <input type="range" min="0" max="100" value="50" class="slider" name='slider' id="slid_aftr_bfr--{{ section.id }}">
    <div class='slider-button'></div>
  </div>
  </div>
  
<script>
  $("#slid_aftr_bfr--{{ section.id }}").on("input change", (e)=>{
  const sliderPos = e.target.value;
  // Update the width of the foreground image
  $('.foreground-img').css('width', `${sliderPos}%`)
  // Update the position of the slider button
  $('.slider-button').css('left', `calc(${sliderPos}% - 15px)`)
});
</script>
{% schema %}
  {
    "name": "Slider After Before",
    "class": "index-section",
    "settings": [
            {
        "type": "paragraph",
        "content": "For better responsiveness, it is recommended to use 2 sections with different container sizes, 1 for mobile only and 1 for desktop only "
      },
      {
   "type": "radio",
   "id": "slide_aftr_bfr-visibility",
   "options": [
      { "value": "medium-up--hide", 
        "label": "Mobile only"
        },
      { "value": "small--hide", 
        "label": "Desktop only"
      },
      { "value": "showboth",
        "label": "both"
      }
   ],
          "label": "Visibility",
"default":   "showboth"
},
      {
"type": "text",
"id": "title",
"label": "Heading"
      },
            {
"type": "text",
"id": "slider_aftr_bfr_img_width",
"label": "container width",
"default": "1200"
},
      {
"type": "text",
"id": "slider_aftr_bfr_img_sz",
"label": "Image height",
"default": "400"
},
              {
          "type": "image_picker",
          "id": "image_before",
          "label": "Image"
        },
      {
"type": "checkbox",
"id": "slid_aftr_bfr_en-over",
"label": "Enable overlay on Before image",
"default": true
},
      {
        "type": "color",
        "id": "color_slid_aftr_bfr_over",
        "label": "Overlay color",
        "default": "#000000"
      },
      {
        "type": "range",
        "id": "slide_aftr_bfr_opacity",
        "label": "Opacity",
        "min": 0,
        "max": 100,
        "step": 1,
        "unit": "%",
        "default": 50
      },
              {
          "type": "image_picker",
          "id": "image_after",
          "label": "Image 2"
        }
    ],
      "presets": [
    {
      "name": "Slider before after",
      "category": "Image"
    }
  ]
  }
{% endschema %}

自定义模板

添加image before and after slider分区

选择2张对比图片，保存。