Javascript: Sort by first characters of an an array

Question

Bear with me, I'm still kinda new to javascript.. I am trying to sort a list of save-game codes to be sorted by their first parse of the element.

var vList =["1|846|Doc|2|0|false|", "11|203|Derik|7|3|false|", "21|670|Mike|5|5|true|", "13|11|Ron|0|0|false|", "9|1000|Blood|9|9|true|"];
var vParse;
for (i = 0; i < (vParse.length); i++)
    var vParse[i]= vList.split('|');

// then somehow sort all the data based on vParse[0]?

I tried a few sorting submissions from other folks, but I couldn't get it to ignore all the font after the first parse. Could anyone help me please?

You just want to sort the array based on the first number before the pipe ? — adeneo
– adeneo, Commented Oct 16, 2016 at 22:31

adeneo · Accepted Answer · 2016-10-16 22:32:53Z

4

You can use Array.sort and just split on the pipe, get the first item, and when subtracting the strings are converted to numbers anyway

var vList =["1|846|Doc|2|0|false|", "11|203|Derik|7|3|false|", "21|670|Mike|5|5|true|", "13|11|Ron|0|0|false|", "9|1000|Blood|9|9|true|"];

vList.sort(function(a,b) {
    return a.split('|')[0] - b.split('|')[0];
});

console.log(vList)

answered Oct 16, 2016 at 22:32

adeneo

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Comments

Legotin · Accepted Answer · 2016-10-16 22:33:33Z

1

Try some like that:

vList.sort( function( a, b ) {
    return parseInt( a.split( '|' )[ 0 ] ) - parseInt( b.split( '|' )[ 0 ] );
} );

You can read more about sort, split and parseInt methods.

answered Oct 16, 2016 at 22:33

Legotin

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2 Comments

Keith Over a year ago

Due to javascript type coercion, in this case '-' on strings, the parseInt's not required.

Legotin Over a year ago

@Keith, sure, I just thought that parseInt method is more obvious for beginner

andreybavt · Accepted Answer · 2016-10-16 22:34:10Z

1

How about this

vList.map(function(el){return {sortBy : parseInt(el.split('|')[0]), original : el}}).sort(function(a,b){return a.sortBy - b.sortBy}).map(function(el){return el.original})

answered Oct 16, 2016 at 22:34

andreybavt

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