Question

How to perform a case-insensitive search in TypeScript

Answer 1

function containsIgnoreCase(str: string, toFind: string): boolean {
    return str.toLowerCase().indexOf(toFind.toLowerCase()) >= 0;
}
 
const str: string = "The FOX Profession is TypeScript Programmer";
const toFind: string = "fox";
 
const contains: boolean = containsIgnoreCase(str, toFind);
 
console.log(contains);
 
 
    
/*
run:
    
true 
   
*/

 

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Answer 2

function containsIgnoreCase(str: string, toFind: string): boolean {
    const regex = new RegExp(toFind, "i");
     
    return regex.test(str);
}
 
const str: string = "The FOX Profession is TypeScript Programmer";
const toFind: string = "fox";
 
const contains: boolean = containsIgnoreCase(str, toFind);
 
console.log(contains);
 
 
    
/*
run:
    
true 
   
*/

 

70+ SQL courses for beginners and professionals