Designing a star pattern in React Native












5















I was trying to draw the star patter in react native where instead of stars, there are suppose to be square boxes.



Star pattern would look like this



****
****
****
****
****


In Vanila JS, it would look like



let rows=5;
for(let i=1; i <= 5; i++) {
for(let j=1; j<=5; j++){
document.write('*');
}
document.write('<br />');
}


But that's vanila JS and I want to make the same in React-native functional component and then display it in JSX



Consider this my functional component in react native



let numberOfBoxesRequired = 4; 
let array =

const gridBoxes = (props) => {

for (let i=0; i<numberOfBoxesRequired; i++) {
for (let j=0; j<numberOfBoxesRequired; j++) {

}
}
return (
<View style={mainGridBox}>

</View>
)
}


Question: How can I do it?










share|improve this question

























  • isn't numberOfBoxesRequired already a number? Why numberOfBoxesRequired.length ?

    – Vishal Sharma
    Nov 19 '18 at 12:11











  • @VishalSharma FIxed it :) My bad ;

    – NoobieSatan
    Nov 19 '18 at 12:15
















5















I was trying to draw the star patter in react native where instead of stars, there are suppose to be square boxes.



Star pattern would look like this



****
****
****
****
****


In Vanila JS, it would look like



let rows=5;
for(let i=1; i <= 5; i++) {
for(let j=1; j<=5; j++){
document.write('*');
}
document.write('<br />');
}


But that's vanila JS and I want to make the same in React-native functional component and then display it in JSX



Consider this my functional component in react native



let numberOfBoxesRequired = 4; 
let array =

const gridBoxes = (props) => {

for (let i=0; i<numberOfBoxesRequired; i++) {
for (let j=0; j<numberOfBoxesRequired; j++) {

}
}
return (
<View style={mainGridBox}>

</View>
)
}


Question: How can I do it?










share|improve this question

























  • isn't numberOfBoxesRequired already a number? Why numberOfBoxesRequired.length ?

    – Vishal Sharma
    Nov 19 '18 at 12:11











  • @VishalSharma FIxed it :) My bad ;

    – NoobieSatan
    Nov 19 '18 at 12:15














5












5








5


1






I was trying to draw the star patter in react native where instead of stars, there are suppose to be square boxes.



Star pattern would look like this



****
****
****
****
****


In Vanila JS, it would look like



let rows=5;
for(let i=1; i <= 5; i++) {
for(let j=1; j<=5; j++){
document.write('*');
}
document.write('<br />');
}


But that's vanila JS and I want to make the same in React-native functional component and then display it in JSX



Consider this my functional component in react native



let numberOfBoxesRequired = 4; 
let array =

const gridBoxes = (props) => {

for (let i=0; i<numberOfBoxesRequired; i++) {
for (let j=0; j<numberOfBoxesRequired; j++) {

}
}
return (
<View style={mainGridBox}>

</View>
)
}


Question: How can I do it?










share|improve this question
















I was trying to draw the star patter in react native where instead of stars, there are suppose to be square boxes.



Star pattern would look like this



****
****
****
****
****


In Vanila JS, it would look like



let rows=5;
for(let i=1; i <= 5; i++) {
for(let j=1; j<=5; j++){
document.write('*');
}
document.write('<br />');
}


But that's vanila JS and I want to make the same in React-native functional component and then display it in JSX



Consider this my functional component in react native



let numberOfBoxesRequired = 4; 
let array =

const gridBoxes = (props) => {

for (let i=0; i<numberOfBoxesRequired; i++) {
for (let j=0; j<numberOfBoxesRequired; j++) {

}
}
return (
<View style={mainGridBox}>

</View>
)
}


Question: How can I do it?







javascript reactjs react-native






share|improve this question















share|improve this question













share|improve this question




share|improve this question








edited Nov 19 '18 at 12:12







NoobieSatan

















asked Nov 19 '18 at 12:04









NoobieSatanNoobieSatan

1,136529




1,136529













  • isn't numberOfBoxesRequired already a number? Why numberOfBoxesRequired.length ?

    – Vishal Sharma
    Nov 19 '18 at 12:11











  • @VishalSharma FIxed it :) My bad ;

    – NoobieSatan
    Nov 19 '18 at 12:15



















  • isn't numberOfBoxesRequired already a number? Why numberOfBoxesRequired.length ?

    – Vishal Sharma
    Nov 19 '18 at 12:11











  • @VishalSharma FIxed it :) My bad ;

    – NoobieSatan
    Nov 19 '18 at 12:15

















isn't numberOfBoxesRequired already a number? Why numberOfBoxesRequired.length ?

– Vishal Sharma
Nov 19 '18 at 12:11





isn't numberOfBoxesRequired already a number? Why numberOfBoxesRequired.length ?

– Vishal Sharma
Nov 19 '18 at 12:11













@VishalSharma FIxed it :) My bad ;

– NoobieSatan
Nov 19 '18 at 12:15





@VishalSharma FIxed it :) My bad ;

– NoobieSatan
Nov 19 '18 at 12:15












2 Answers
2






active

oldest

votes


















2














It is the same in vanilla JavaScript and React:



const starLines = Array(4).fill('*'.repeat(4));


Once there's data, it can be output in a way that is specific to current application.



In plain JavaScript:



document.write(starLines.join('<br />'));


In React Native:



<View style={mainGridBox}>{starLines.map(line => <Text>{line}</Text>)}</View>





share|improve this answer

































    1














    First you need to render your boxes:



    let numberOfBoxesRequired = 4; 

    const gridBoxes = (props) => {
    let boxes = ;
    for (let i=0; i<numberOfBoxesRequired; i++) {
    for (let j=0; j<numberOfBoxesRequired; j++) {
    boxes.push(<Box />); // assume Box is your box component
    }

    }
    return (
    <View style={mainGridBox}>
    {boxes} // render the boxes
    </View>
    )
    }


    Then you will have to style your gridBox:



    .mainGridBox {
    flex: 1,
    flexWrap: "wrap";
    }

    .box {
    flexBasis: 0.25; // this will make a box fill 25% of the container width
    width: 30; // example width
    height: 30; // example height
    }


    This is the closest to your implementation, but I suggest you use Array.map() like estus pointed out in his answer.






    share|improve this answer
























    • @Stundiji, Trying it out but shouldn't let boxes = ; be in global scope?

      – NoobieSatan
      Nov 19 '18 at 12:44






    • 1





      We declare it in the function scope, because it is only used inside the function.

      – Stundji
      Nov 19 '18 at 12:46













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    2 Answers
    2






    active

    oldest

    votes








    2 Answers
    2






    active

    oldest

    votes









    active

    oldest

    votes






    active

    oldest

    votes









    2














    It is the same in vanilla JavaScript and React:



    const starLines = Array(4).fill('*'.repeat(4));


    Once there's data, it can be output in a way that is specific to current application.



    In plain JavaScript:



    document.write(starLines.join('<br />'));


    In React Native:



    <View style={mainGridBox}>{starLines.map(line => <Text>{line}</Text>)}</View>





    share|improve this answer






























      2














      It is the same in vanilla JavaScript and React:



      const starLines = Array(4).fill('*'.repeat(4));


      Once there's data, it can be output in a way that is specific to current application.



      In plain JavaScript:



      document.write(starLines.join('<br />'));


      In React Native:



      <View style={mainGridBox}>{starLines.map(line => <Text>{line}</Text>)}</View>





      share|improve this answer




























        2












        2








        2







        It is the same in vanilla JavaScript and React:



        const starLines = Array(4).fill('*'.repeat(4));


        Once there's data, it can be output in a way that is specific to current application.



        In plain JavaScript:



        document.write(starLines.join('<br />'));


        In React Native:



        <View style={mainGridBox}>{starLines.map(line => <Text>{line}</Text>)}</View>





        share|improve this answer















        It is the same in vanilla JavaScript and React:



        const starLines = Array(4).fill('*'.repeat(4));


        Once there's data, it can be output in a way that is specific to current application.



        In plain JavaScript:



        document.write(starLines.join('<br />'));


        In React Native:



        <View style={mainGridBox}>{starLines.map(line => <Text>{line}</Text>)}</View>






        share|improve this answer














        share|improve this answer



        share|improve this answer








        edited Nov 19 '18 at 12:27

























        answered Nov 19 '18 at 12:19









        estusestus

        69k21102218




        69k21102218

























            1














            First you need to render your boxes:



            let numberOfBoxesRequired = 4; 

            const gridBoxes = (props) => {
            let boxes = ;
            for (let i=0; i<numberOfBoxesRequired; i++) {
            for (let j=0; j<numberOfBoxesRequired; j++) {
            boxes.push(<Box />); // assume Box is your box component
            }

            }
            return (
            <View style={mainGridBox}>
            {boxes} // render the boxes
            </View>
            )
            }


            Then you will have to style your gridBox:



            .mainGridBox {
            flex: 1,
            flexWrap: "wrap";
            }

            .box {
            flexBasis: 0.25; // this will make a box fill 25% of the container width
            width: 30; // example width
            height: 30; // example height
            }


            This is the closest to your implementation, but I suggest you use Array.map() like estus pointed out in his answer.






            share|improve this answer
























            • @Stundiji, Trying it out but shouldn't let boxes = ; be in global scope?

              – NoobieSatan
              Nov 19 '18 at 12:44






            • 1





              We declare it in the function scope, because it is only used inside the function.

              – Stundji
              Nov 19 '18 at 12:46


















            1














            First you need to render your boxes:



            let numberOfBoxesRequired = 4; 

            const gridBoxes = (props) => {
            let boxes = ;
            for (let i=0; i<numberOfBoxesRequired; i++) {
            for (let j=0; j<numberOfBoxesRequired; j++) {
            boxes.push(<Box />); // assume Box is your box component
            }

            }
            return (
            <View style={mainGridBox}>
            {boxes} // render the boxes
            </View>
            )
            }


            Then you will have to style your gridBox:



            .mainGridBox {
            flex: 1,
            flexWrap: "wrap";
            }

            .box {
            flexBasis: 0.25; // this will make a box fill 25% of the container width
            width: 30; // example width
            height: 30; // example height
            }


            This is the closest to your implementation, but I suggest you use Array.map() like estus pointed out in his answer.






            share|improve this answer
























            • @Stundiji, Trying it out but shouldn't let boxes = ; be in global scope?

              – NoobieSatan
              Nov 19 '18 at 12:44






            • 1





              We declare it in the function scope, because it is only used inside the function.

              – Stundji
              Nov 19 '18 at 12:46
















            1












            1








            1







            First you need to render your boxes:



            let numberOfBoxesRequired = 4; 

            const gridBoxes = (props) => {
            let boxes = ;
            for (let i=0; i<numberOfBoxesRequired; i++) {
            for (let j=0; j<numberOfBoxesRequired; j++) {
            boxes.push(<Box />); // assume Box is your box component
            }

            }
            return (
            <View style={mainGridBox}>
            {boxes} // render the boxes
            </View>
            )
            }


            Then you will have to style your gridBox:



            .mainGridBox {
            flex: 1,
            flexWrap: "wrap";
            }

            .box {
            flexBasis: 0.25; // this will make a box fill 25% of the container width
            width: 30; // example width
            height: 30; // example height
            }


            This is the closest to your implementation, but I suggest you use Array.map() like estus pointed out in his answer.






            share|improve this answer













            First you need to render your boxes:



            let numberOfBoxesRequired = 4; 

            const gridBoxes = (props) => {
            let boxes = ;
            for (let i=0; i<numberOfBoxesRequired; i++) {
            for (let j=0; j<numberOfBoxesRequired; j++) {
            boxes.push(<Box />); // assume Box is your box component
            }

            }
            return (
            <View style={mainGridBox}>
            {boxes} // render the boxes
            </View>
            )
            }


            Then you will have to style your gridBox:



            .mainGridBox {
            flex: 1,
            flexWrap: "wrap";
            }

            .box {
            flexBasis: 0.25; // this will make a box fill 25% of the container width
            width: 30; // example width
            height: 30; // example height
            }


            This is the closest to your implementation, but I suggest you use Array.map() like estus pointed out in his answer.







            share|improve this answer












            share|improve this answer



            share|improve this answer










            answered Nov 19 '18 at 12:33









            StundjiStundji

            442212




            442212













            • @Stundiji, Trying it out but shouldn't let boxes = ; be in global scope?

              – NoobieSatan
              Nov 19 '18 at 12:44






            • 1





              We declare it in the function scope, because it is only used inside the function.

              – Stundji
              Nov 19 '18 at 12:46





















            • @Stundiji, Trying it out but shouldn't let boxes = ; be in global scope?

              – NoobieSatan
              Nov 19 '18 at 12:44






            • 1





              We declare it in the function scope, because it is only used inside the function.

              – Stundji
              Nov 19 '18 at 12:46



















            @Stundiji, Trying it out but shouldn't let boxes = ; be in global scope?

            – NoobieSatan
            Nov 19 '18 at 12:44





            @Stundiji, Trying it out but shouldn't let boxes = ; be in global scope?

            – NoobieSatan
            Nov 19 '18 at 12:44




            1




            1





            We declare it in the function scope, because it is only used inside the function.

            – Stundji
            Nov 19 '18 at 12:46







            We declare it in the function scope, because it is only used inside the function.

            – Stundji
            Nov 19 '18 at 12:46




















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