JavaScript中拆分字符串的正则表达式

Question

I have the string in like below format:

var string = "1SS+2d,12SS+7d,13SS+12d";

My requirement is split the given string into array with 3 objects like in the following format:

var collection = [{ id : 1,
                    connectiontype : "SS",
                    linelength : 7,
                    linetyype: d
                },
                {
                    id: 12,
                    connectiontype: "SS",
                    linelength: 2,
                    linetyype: d
                },
                {
                    id: 12,
                    connectiontype: "SS",
                    linelength: 2,
                    linetyype: d
                },
                {
                    id: 13,
                    connectiontype: "SS",
                    linelength: 12,
                    linetyype: d
                }            

]

I have tried with split method in string object. But it take more looping logic. How to obtain this using RegExp?

Answer 1

you can use next regular expression to build your object

var regexp = /(\d+)(\w+)\+(\d+)(\w+)/;
var arr = string.split(',');
var collection = [];
var result;
for ( var key in arr ){
    result = regexp.exec(arr[key]);
    collection.push({
        id : result[1],
        connectiontype : result[2],
        linelength : result[3],
        linetyype: result[4]
    });
}

Answer 2

I would recommend using split to split each item using comma, then you can use regex to parse each item to create the object:

var string = "1SS+2d,12SS+7d,13SS+12d";
var regex = /(\d+)(\w+)\+(\d+)(\w+)/;
var match = regex.exec(string);

var collection = [];

var items = string.split(',');
for (var i = 0; i < items.length; i++) {
    var item = items[i];
    var match = regex.exec(item);

    collection.push({
        id: match[1],
        connectiontype: match[2],
        linelength: match[3],
        linetyype: match[4]
    });
}

Here is a working example

Answer 3

Split the string then loop over it. I've assumed that SS and d are going to be the same in each object but YMMV.

var r = /^(\d+)SS\+(\d+)d$/;
var collection = [];
str.split(',').forEach(function (el) {
  var m = r.exec(el);
  var obj = {
    id: m[1],
    connectiontype: 'SS',
    linelength: m[2],
    linetyype: 'd'
  };
  collection.push(obj);
});