NodeJS Extracting input value from url

Question

I have html stored in a var

var html = "<div class="RiP" style="text-align: left;"><div class="clr"></div><input name="extraMP" value="999" type="hidden"><div class="txta dropError">Slide to activate</div><div class="bgSlider"><div class="Slider ui-draggable"></div></div><div class="clr"></div><input name="randomValue" value="randomValue2" type="hidden"></div>"

I want to extract "randomValue" and "randomValue2".

Maybe I should use cheerio? I tried with it but I had hard time managing to do it.

Did any of the answers work for you? – The fourth bird Jan 10 '19 at 14:30 — The fourth bird, Jan 10 '19 at 14:30

score 1 · Answer 1 · answered Jan 07 '19 at 00:34

If cheerio is hard for you - you could use regular expression to get the values. For easily access you could provide class attribute for the <input> like:

<input class="className" name="randomValue" value="randomValue2" type="hidden">

your regexp will be:

const match = html.match(/<input\s*class="className"\s*name="(.+?)"\s*value="(.+?)"/m)
match[1] // randomValue
match[2] // randomValue2

With cheerio it will be:

const cheerio = require('cheerio');
const html = `<div class="RiP" style="text-align: left;"><div class="clr"></div><input name="extraMP" value="999" type="hidden"><div class="txta dropError">Slide to activate</div><div class="bgSlider"><div class="Slider ui-draggable"></div></div><div class="clr"></div><input class="myClass" name="randomValue" value="randomValue2" type="hidden"></div>`

const $ = cheerio.load(html);

$('.myClass').val(); // randomValue2
$('.myClass').attr('name'); // randomValue

[Don't use regex to parse HTML](https://stackoverflow.com/questions/1732348/regex-match-open-tags-except-xhtml-self-contained-tags). — ggorlen, Jan 09 '23 at 22:35

The fourth bird · Answer 2 · 2019-01-07T10:46:02.673

What you might do using cheerio is to find the last input inside the RiP class and get the name and value attribute:

var html = `<div class="RiP" style="text-align: left;"><div class="clr"></div><input name="extraMP" value="999" type="hidden"><div class="txta dropError">Slide to activate</div><div class="bgSlider"><div class="Slider ui-draggable"></div></div><div class="clr"></div><input name="randomValue" value="randomValue2" type="hidden"></div>`;

const cheerio = require('cheerio');
const $ = cheerio.load(html);

let input = $('.RiP input').last();
console.log(input.attr('name'));
console.log(input.val());

Result:

randomValue
randomValue2

Note that it is not advisable to parse html with regex

NodeJS Extracting input value from url

2 Answers2