How to check if the value exist in google spreadsheet or not using apps script

Question

How to check if the value is exist in google spreadsheet or not using apps script I want to check if the Sam exist in the entire spreadsheet or not using apps s

Answer 1

Depending on if you want to select the range or just always use the whole A:A column. In the former case, do this:

// this gets the range
var range = SpreadsheetApp.getActiveRange().getValues();

// this is what you are searching for
var searchString = "Sam";

// this is whether what you are searching for exists 
var isSearchStringInRange = range.some( function(row){
    return row[0] === searchString
});

// then you can proceed to do something like
if( isSearchStringInRange ){
  // do something
}