If you have a SharePoint List that stores some kind of reviews, usually those are from 1 to 5.

Let’s add some emojis that match the scores:

• sad face for 1 and 2 (usually 1 and 2 are equally bad);
• neutral face for 3;
• happy face for 4;
• overly happy face for 5.

The icons are from https://developer.microsoft.com/en-us/fabric#/styles/icons

It doesn’t really add any practicality to the list but makes it look nicer.

To see how it works we will create a SharePoint list, then add a “Review” column (Number type). Five different reviews are added with scores from 1 to 5. 

To add emojis to the “Review” column, click on its header – Column settings – Format this column. Once selected, there will be a Format column window on the right side. Paste the code from down below into that windows and save to get the result.

{
  "$schema": "http://columnformatting.sharepointpnp.com/columnFormattingSchema.json",
  "elmType": "div",
  "children": [
    {
      "elmType": "span",
      "style": {
        "display": "inline-block",
        "padding": "0 2px"
      },
      "attributes": {
        "iconName": {
          "operator": "?",
          "operands": [
            {
              "operator": ">=",
              "operands": [
                "@currentField",
                "5"
              ]
            },
            "Emoji",
              {
                "operator": "?",
                "operands": [
                  {
                    "operator": ">=",
                    "operands": [
                      "@currentField",
                      "4"
                    ]
                  },
                  "Emoji2",
                    {
                      "operator": "?",
                      "operands": [
                        {
                          "operator": ">=",
                          "operands": [
                            "@currentField",
                            "3"
                          ]
                        },
                        "EmojiNeutral",
                          {
                            "operator": "?",
                            "operands": [
                              {
                                "operator": ">=",
                                "operands": [
                                  "@currentField",
                                  "1"
                                ]
                              },
                              "EmojiDisappointed",
                              "Unknown"
                            ]
                          }
                      ]
                    }
                ]
              }
          ]
        }
      }
    },
    {
      "elmType": "span",
      "style": {
        "padding-left": "8px"
      },
      "txtContent": "@currentField"
    }
  ]
}

Or the code can be simplified by using =if function:

{
	"$schema": "http://columnformatting.sharepointpnp.com/columnFormattingSchema.json",
	"elmType": "div",
	"children": [
		{
			"elmType": "span",
			"style": {
				"display": "inline-block",
				"padding": "0 2px"
			},
			"attributes": {
				"iconName": "=if(@currentField >= 5, 'Emoji', if(@currentField >= 4, 'Emoji2', if(@currentField >= 3, 'EmojiNeutral', if(@currentField >= 1, 'EmojiDisappointed', 'Unknown'))))"
			}
		},
		{
			"elmType": "span",
			"style": {
				"padding-left": "8px"
			},
			"txtContent": "@currentField"
		}
	]
}