関連ワード:  check whether string contains substring js    check that string contains substring js    check if string includes substring js    test if string contains substring js    check if string contains substring javascript case insensitive    check if string array contains substring javascript    check if string contains multiple substrings javascript    js check if string contains substring from array    js check if string contains substring regex    find if string contains substring js  
結果 : check whether string contains substring js