関連ワード:  check if string includes substring js    check if string contains substring js    check if string has substring js    see if string contains substring js    test if string contains substring js    check if string contains substring javascript case insensitive    check if string contains substring javascript regex    check if string array contains substring javascript    check if string contains exact substring javascript    check if string contains array of substrings js  
結果 : check if string includes substring js