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?

Answer 1

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

Answer 2

var regExp = /the word/i

有关正则表达式的更多信息： https : //developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/RegExp