case insensitive search in javascript

Question

I have this javascript code that is supposed to be refreshing a given web page after a specific amount of time and tries to find a certain word after each refresh. And when that word is found, a certain alarming sound is supposed to go off. here's the code:

javascript: var myRegExp = prompt("the word"); timeout = prompt("the time in seconds"); current = location.href; setTimeout('reload()', 1000 * timeout); var audio = new Audio('http://soundbible.com/grab.php?id=2197&type=mp3'); function reload() { var found = searchText(); if (!found) { setTimeout('reload()', 1000 * timeout); fr4me = '<frameset cols=\'*\'>\n<frame id="frame01" src=\'' + current + '\'/>'; fr4me += '</frameset>'; with(document) { write(fr4me); void(close()) }; } } function searchText() { var f = document.getElementById("frame01"); if (f != null && f.contentDocument != null) { var t = f.contentDocument.body.innerHTML; var matchPos = t.search(myRegExp); if (matchPos != -1) { audio.play(); return true; } else { return false; } } }

My question/request is, how to make the search for the word case insensitive?

Just lowercase the search text. And then perform the match. f.contentDocument.body.innerHTML.toLowerCase() — Bibberty
– Bibberty, Commented Feb 25, 2019 at 21:45
Possible duplicate of Refresh, find and alert using javascript — jo_va
– jo_va, Commented Feb 25, 2019 at 21:47
It is not, from the other question: and also, how to make the search for the word case insensitive? — jo_va
– jo_va, Commented Feb 25, 2019 at 22:39

jakemingolla · Accepted Answer · 2019-02-25 21:48:10Z

Use the ignoreCase option From the MDN

The ignoreCase property indicates whether or not the "i" flag is used with the regular expression. ignoreCase is a read-only property of an individual regular expression instance.

var regex1 = new RegExp('foo'); var regex2 = new RegExp('foo', 'i'); console.log(regex1.test('Football')); // expected output: false console.log(regex2.ignoreCase); // expected output: true console.log(regex2.test('Football')); // expected output: true

Jason Pelletier · Accepted Answer · 2019-02-25 21:47:18Z

var regExp = /the word/i

For more on regex : https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/RegExp

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