# Sort by Column

Define sort settings of each column by using sort property.
When you set true value, the records are sorted by builtin logic in Cheetah Grid.
When you set string value, the records are sorted by builtin logic in Cheetah Grid, using the specified field.
Please define function if you want to sort by your own logic.

<div class="sample1 demo-grid middle"></div>
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const records = [
  {
    no: 1,
    name: "Asiatic",
  },
  {
    no: 2,
    name: "South African",
  },
  {
    no: 3,
    name: "Tanzanian",
  },
  {
    no: 4,
    name: "Sudan",
  },
  {
    no: 5,
    name: "King",
  },
];
const grid = new cheetahGrid.ListGrid({
  parentElement: document.querySelector(".sample1"),
  header: [
    {
      field: "no",
      caption: "no",
      width: 50,
      // define custom sort logic
      sort(order, col, grid) {
        const compare =
          order === "desc"
            ? (v1, v2) => (v1 === v2 ? 0 : v1 > v2 ? 1 : -1)
            : (v1, v2) => (v1 === v2 ? 0 : v1 < v2 ? 1 : -1);
        records.sort((r1, r2) => compare(r1.no, r2.no));
        console.log("sorted:", records);
        grid.records = records;
      },
    },
    {
      field: "name",
      caption: "name",
      width: 200,
      // use default sort logic
      sort: true,
    },
  ],
});
grid.records = records;
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# Style Properties

Property Description Default
sortArrowColor Defines the color of the sort icon. --
multiline If true, accept multiline text caption. false
lineHeight Define the amount of space used for lines. --
autoWrapText Define whether to wrap automatically. --
lineClamp Define truncates text at a specific number of lines. --

In addition to this, the Standard styles is available.

# Color of sort arrow

In order to change the color of the sort arrow you implement as follows.

<div class="sample2 demo-grid middle"></div>
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const records = [
  {
    no: 1,
    name: "Asiatic",
  },
  {
    no: 2,
    name: "South African",
  },
  {
    no: 3,
    name: "Tanzanian",
  },
  {
    no: 4,
    name: "Sudan",
  },
  {
    no: 5,
    name: "King",
  },
];
const grid = new cheetahGrid.ListGrid({
  parentElement: document.querySelector(".sample2"),
  header: [
    {
      field: "no",
      caption: "no",
      width: 50,
      sort(order, col, grid) {
        const compare =
          order === "desc"
            ? (v1, v2) => (v1 === v2 ? 0 : v1 > v2 ? 1 : -1)
            : (v1, v2) => (v1 === v2 ? 0 : v1 < v2 ? 1 : -1);
        records.sort((r1, r2) => compare(r1.no, r2.no));
        grid.records = records;
      },
      // define color of sort arrow
      headerStyle: { sortArrowColor: "red" },
    },
    {
      field: "name",
      caption: "name",
      width: 200,
      sort: true,
      // define color of sort arrow
      headerStyle() {
        return { sortArrowColor: "blue" };
      },
    },
  ],
});
grid.records = records;
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# Reset

If you set sortState property to null, the sort state is initialized.
(only the arrow icon of the header is initialized.)

<div class="sample3 demo-grid middle"></div>
<button class="sample3-reset">Reset</button>
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const records = [
  {
    no: 1,
    name: "Asiatic",
  },
  {
    no: 2,
    name: "South African",
  },
  {
    no: 3,
    name: "Tanzanian",
  },
  {
    no: 4,
    name: "Sudan",
  },
  {
    no: 5,
    name: "King",
  },
];
const grid = new cheetahGrid.ListGrid({
  parentElement: document.querySelector(".sample3"),
  header: [
    {
      field: "no",
      caption: "no",
      width: 50,
      sort(order, col, grid) {
        const compare =
          order === "desc"
            ? (v1, v2) => (v1 === v2 ? 0 : v1 > v2 ? 1 : -1)
            : (v1, v2) => (v1 === v2 ? 0 : v1 < v2 ? 1 : -1);
        records.sort((r1, r2) => compare(r1.no, r2.no));
        grid.records = records;
      },
    },
    {
      field: "name",
      caption: "name",
      width: 200,
      sort: true,
    },
  ],
});
grid.records = records;

const button = document.querySelector(".sample3-reset");
button.onclick = () => {
  grid.sortState = null;
  // does not redraw automatically, please call `invalidate`.
  grid.invalidate();
};
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