CODEWITHSUNDEEP
javascriptextjs4
Leron
Leron

Reputation: 9866

Javascript how to show each element of array on a new line

I have a string build form comma separated values I use split to get each value and after that I want to show each value on a new line but what really happens is that I get each value on a new line except of the last two which are shown together on a same line. Just to make it clear:

value1

,value2

,value3

,value4,value5

Here is the function which I'm using:

_checkDates: function(dates) {
    if (dates != null)
    {
        var zzz = dates.split(',');
        var xxx = zzz.length;
        console.log(xxx);
        for (var i=0; i<=xxx; i++)
        {
            zzz[i] = zzz[i] + '<br />';
            return zzz;
        }
    }
    return dates;
}

Just to be clear this is written in ExtJS 4, I'm almost sure that in this case the problem is pure JavaScript and is not related with ExtJS 4 but anyways, maybe I'm wrong.

So any ideas why does it happen and how I could make that last element to get on a new line as well?

Upvotes: 31

Views: 148165

Answers (3)

VIJAY P
VIJAY P

Reputation: 1433

i have modified your function bit cleaner.since already stefan mentioned your mistake.

function splitDate(dates) {
    if (dates != null)
    {
        var dates = dates.split(',');
        var xxx = dates.length;
        console.log(xxx);
        for (var i=0; i<xxx; i++)
        {
            dates[i] = dates[i];                    
        }
    }
    console.log(dates.join('\r\n'));
    return dates.join('\r\n');        
}

the above function you can do it in a single line:

if it's an array you can split into new line in following way:

var arr = ['apple','banana','mango'];
console.log(arr.join('\r\n'));

if it's a string:

var str = "apple,banana,mango";
console.log(str.split(',').join("\r\n"));

Upvotes: 48

Hardik Desai
Hardik Desai

Reputation: 1217

Link: https://snack.expo.io/GcMeWpPUX

import React from 'react'
import { SafeAreaView, Text, View, FlatList } from 'react-native'

export default class App extends React.Component {

    render() {
        return (
            <SafeAreaView style={{ flex: 1, alignItems: 'center', justifyContent: 'center',margin:20 }}>
                <FlatList
                    data={your_array_name}
                    keyExtractor={(item, index) => String(index)}
                    renderItem={({ item, index }) => {
                        return (
                            <Text style={{ color: '#ff8500', fontSize: 18 }}>{item.skills.splice(',').join("\n")}</Text>
                        )
                    }}
                />

            </SafeAreaView>
        )
    }

}


const your_array_name = [
    {
        id: 1,
        text: 'Lorem ipsum is simple dummy text for printing the line',
        skills: ['javascript', 'java']
    },
    {
        id: 2,
        text: 'Lorem ipsum is simple dummy text.',
        skills: ['javascript', 'java']
    }]

Upvotes: 3

Stefan
Stefan

Reputation: 14880

The for-loop is suspicious. Firstly, you do not process all items (the last one is missing, as @sarfraz pointed out). Sencondly you are returning the result (zzz) in the for-loop body:

for (var i=0; i<=xxx; i++)
{
  zzz[i] = zzz[i] + '<br />';
  return zzz; // for-loop will stop here! resulting in ["value1<br />", "Value2", etc...]
}

In Javscript you can simple "join" the array:

return dates.split(',').join("<br />")

Since you are simply replacing strings you could use the replace method:

return dates.replace(",", "<br />");

Upvotes: 18

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