PHP 回顾 javascript

Question

对于以下字符串，我想提取日期（星期一）、时间（6-8pm）和位置（Location1）

Date1: Monday, 6-8pm, Location1
Date2: Tuesday, 1-3pm, Location2
Date3: Wednesday, 4-6pm, Location3

在 PHP 中，我会 preg_match("/(?<=Date\d:\s)(.*),\s(.*),\s(.*)/", $input_line, $output_array); 使用 lookbehind 正则表达式，我可以使用 $output_array 在数组中单独显示数据，例如：

array[0][1] = Monday, array[0][2] = 6-8pm, array[0][3] = Location1 array[1][1] = Tuesday, array[1][2] = 1-3pm, array[1][3] = Location2 array[2][1] = Wednesday, array[2][2] = 4-6pm, array[2][3] = Location3

我只是想知道如何在 JavaScript 中实现同样的事情？

谢谢！

Answer 1

不确定如何使用 JS RegEx 一次进行多个匹配，但这里有一些非正则表达式的解决方案：

var input = "Date1: Monday, 6-8pm, Location1\n"
          + "Date2: Tuesday, 1-3pm, Location2\n"
          + "Date3: Wednesday, 4-6pm, Location3";

var input_lines = input.split("\n");

var output = [];

for(var iterator = 0;iterator < input_lines.length;iterator++){
    var input_line = input_lines[iterator];

    input_line = input_line.replace(/Date[0-9]+:\s/, '');

    var line_data = input_line.split(/,\s/);

    output.push(line_data);
}

或者，更短的版本：

var input = "Date1: Monday, 6-8pm, Location1\n"
          + "Date2: Tuesday, 1-3pm, Location2\n"
          + "Date3: Wednesday, 4-6pm, Location3";

output = [];

// Just a shortened version of the loop in the previous example.
input.split("\n").forEach(function(line){
    output.push(line.replace(/Date[0-9]+:\s/, '').split(/,\s/));
});

PHP 回顾 javascript

PHP lookbehind in javascript

javascript

php

regex

arrays

lookbehind