cli-interact的使用

１、getChar

var query=require('cli-interact').getChar;
    var answer = query('Tell me one of', 'abcdef');
    console.log('you answered:', answer);

2、getChoiceByChar

var query=require('cli-interact').getChoiceByChar;
    var answer=query('frequency', ['daily', 'weekly', 'monthly']);
    console.log('you answered:', answer);

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3、getInteger

    var query=require('cli-interact').getNumber;
    var answer = query('Give me an int', true);     // restrict to integer
    console.log('you answered:', answer);
    console.log('the typeof of that is:', typeof answer);

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4、getIPversion

    var query=require('cli-interact').getIPversion;
    var answer = query(false);
    console.log('you answered:', answer);
    answer = query(true);
    console.log('you answered:', answer);

5、getNumber

    var query=require('cli-interact').getNumber;
    var answer = query('Case 1: You MAY give me a number: ', {
        allowNoAnswer       : true
    });
    if (answer !== '') {
        console.log('No answer.');
    } else {
        console.log('Thank you for: ', answer);
    }
    
    console.log();
    answer = query('Case 2: You MUST give me a number: ');
    
    console.log('you answered:', answer);
    console.log('the typeof of that is:', typeof answer);
    
    console.log();
    answer = query('Case 3: You MUST give me an integer: ', true);
    console.log('Thank you for: ', answer);
    
    console.log();
    answer = query('Case 4: You MAY give me an answer. If you do, it MUST be an integer', {
        allowNoAnswer       : true
        , requireInteger    : true
    });
    if (answer !== '') {
        console.log('No answer.');
    } else {
        console.log('Thank you for: ', answer);
    }
    
}

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6、getYesNo

    var query=require('cli-interact').getYesNo;
    var answer = query('Is it true');
    console.log('you answered:', answer);

7、getYesNoNone

    var query=require('cli-interact').getYesNo;
    var answer = query('Is it true', true);

    if (answer === undefined) {
        console.log('you did not answer.');
    } else {
        console.log('you answered:', answer);
    }
}

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8、 question

var query=require('cli-interact').question;
    var answer = query('Tell me what do you want: ');

    console.log('you answered:', answer);