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The applyMap() method replace grid records with the results of calling a provided function on every element in the grid records array.



  1. Callback function that receives the following arguments:
    1. Record object with properties for each field in the grid
    2. Index - the zero-based index of the current grid record being processed
    3. Records array - array representing all of the grid records

The function must return a record object




if (checkAll) {  // Check all boxes in the grid
  display.grid.applyMap(record => {
    record.checked = true; 
    return record;