javascript - How to set sequence for exact consecutive elements of csv string? -


i have string csv containing portcode , latitude longitude of location. use these values plot marker on google map.

eg csv string:

anc|61.2181:149.9003,    anc|61.2181:149.9003, tlk|62.3209:150.1066, dnl|63.1148:151.1926, dnl|63.1148:151.1926, dnl|63.1148:151.1926, tlk|62.3209:150.1066, tlk|62.3209:150.1066, ale|60.9543:149.1599

i want autonumber similar portcode sequence separated pipe symbol '|' portcode exact consecutive next element.

required out put:

anc|61.2181:149.9003:1|2, tlk|62.3209:150.1066:3, dnl|63.1148:151.1926:4|5|6, tlk|62.3209:150.1066:7|8, ale|60.9543:149.1599:9

any solution using jquery/javascript/c# ?

there's neater/shorter way this, here's first second way came mind using javascript:

var input = "anc|61.2181:149.9003,\nanc|61.2181:149.9003,\ntlk|62.3209:150.1066,\ndnl|63.1148:151.1926,\ndnl|63.1148:151.1926,\ndnl|63.1148:151.1926,\ntlk|62.3209:150.1066,\ntlk|62.3209:150.1066,\nale|60.9543:149.1599";    var output = input.split(",\n").reduce(function(p,c,i,a) {    if (i === 1) p += ":1";    return p + (c === a[i-1] ? "|" : ",\n" + c + ":") + (i+1);  });    console.log(output);

i've assumed each line ends single \n character, can adjust \r or whatever.

further reading:


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