Looking for an easy solution in RegExp - how to locate the keys?

Question

Looking for an easy solution in RegExp - how to locate the keys?

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I am tasked with extracting specific keys from a series of URLs where the key is denoted by 'KEY=123'. My goal is to identify and extract all these keys.

For Instance:

/somecommand?ACTION=UPDATE&DATATYPE=1&KEY=462&NUMBER=123.5263&SOMEID=845&IDTYPE=1

Is there an efficient way to achieve this task aside from simply searching for the 'KEY' phrase and its accompanying number? Preferably, I would like to use JavaScript for this task.

UPDATE:

The URLs are complex and difficult to parse through directly within text. Here's a brief excerpt for reference:

2011-07-29 01:17:55.965/somecommand?ACTION=UPDATE&DATATYPE=1&KEY=462&NUMBER=123.5263&SOMEID=845&IDTYPE=1 200 685ms 157cpu_ms 87api_cpu_ms 0kb ABCABC/2.0 CFNetwork/485.12.7 Darwin/10.4.0 Paros/3.2.13`

2011-07-29 01:05:19.566 /somecommand?ACTION=UPDATE&DATATYPE=1&KEY=462&NUMBER=123.5263&SOMEID=845&IDTYPE=1 200 29ms 23cpu_ms 0kb ABCABC/2.0 CFNetwork/485.12.7 Darwin/10.4.0 Paros/3.2.13

2011-07-29 01:04:41.231 /somecommand?ACTION=UPDATE&DATATYPE=1&KEY=462&NUMBER=123.5263&SOMEID=845&IDTYPE=1  200 972ms 78cpu_ms 8api_cpu_ms 0kb ABCABC/2.0 CFNetwork/485.12.7 Darwin/10.4.0 Paros/3.2.13

javascript regex

Answer 1

Answer №1

If you were looking to extract specific information from a text using JavaScript, the code snippet below could help:

var text = 'ACTION=UPDATE&DATATYPE=1&KEY=462&NUMBER=123.5263&SOMEID=845&IDTYPE=1&key=678';
var matches = text.match(/KEY=\d*|key=\d*/g);
for (i=0; i<matches.length; i++) {
   alert(matches[i]);
}

To focus solely on the numerical value associated with the key, you could utilize this variation of the code:

var text = 'ACTION=UPDATE&DATATYPE=1&KEY=462&NUMBER=123.5263&SOMEID=845&IDTYPE=1&key=678';
var matches = text.match(/KEY=\d*|key=\d*/g);
for (i=0; i<matches.length; i++) {
   alert(matches[i].toLowerCase().replace('key=',''));
}

Answer 2

If you were looking to extract specific information from a text using JavaScript, the code snippet below could help:

var text = 'ACTION=UPDATE&DATATYPE=1&KEY=462&NUMBER=123.5263&SOMEID=845&IDTYPE=1&key=678';
var matches = text.match(/KEY=\d*|key=\d*/g);
for (i=0; i<matches.length; i++) {
   alert(matches[i]);
}

To focus solely on the numerical value associated with the key, you could utilize this variation of the code:

var text = 'ACTION=UPDATE&DATATYPE=1&KEY=462&NUMBER=123.5263&SOMEID=845&IDTYPE=1&key=678';
var matches = text.match(/KEY=\d*|key=\d*/g);
for (i=0; i<matches.length; i++) {
   alert(matches[i].toLowerCase().replace('key=',''));
}

Answer 3

Answer №2

If you are specifically interested in extracting the KEY value:

let regex = new RegExp("KEY=(\d+)");
let result = regex.exec(window.location.href);

In your scenario, the result would be "123". If there are multiple instances, use the following code:

let regex = new RegExp("KEY=(\d+)", "gm");
let results = regex.exec(window.location.href);

In this situation, the variable 'results' will store an array of values.

Answer 4

If you are specifically interested in extracting the KEY value:

let regex = new RegExp("KEY=(\d+)");
let result = regex.exec(window.location.href);

In your scenario, the result would be "123". If there are multiple instances, use the following code:

let regex = new RegExp("KEY=(\d+)", "gm");
let results = regex.exec(window.location.href);

In this situation, the variable 'results' will store an array of values.

Answer 5

Answer №3

b = "/anothercommand?ACTION=ADD&DATATYPE=2&KEY=871&NUMBER=856.3214&SOMEID=975&IDTYPE=2";
b.match(/KEY\=(\d+)/gi)

Answer 6

b = "/anothercommand?ACTION=ADD&DATATYPE=2&KEY=871&NUMBER=856.3214&SOMEID=975&IDTYPE=2";
b.match(/KEY\=(\d+)/gi)

Looking for an easy solution in RegExp - how to locate the keys?

UPDATE:

Answer №1

Answer №2

Answer №3

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