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RegExp.prototype.test() - JavaScript | MDN
test(str)); // Expected output: false Syntax js test(str)...match. Examples Using test() This example tests if "hello" is contained...developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/RegExp/testRegistered: Fri Jun 27 02:05:55 UTC 2025 - Last Modified: Fri Jun 27 00:57:54 UTC 2025 - 81K bytes - Viewed (0) -
RegExp.prototype.sticky - JavaScript | MDN
Because test() is a simple wrapper around exec() , test() would...regex.test(str); // true regex.lastIndex = 5; regex.test(str);...developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/RegExp/stickyRegistered: Fri Jun 27 02:05:25 UTC 2025 - Last Modified: Fri Jun 27 00:57:54 UTC 2025 - 86.6K bytes - Viewed (0) -
void operator - JavaScript | MDN
executed" void function test() { console.log("test function executed");...executed"); }; try { test(); } catch (e) { console.log("test function is...developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Operators/voidRegistered: Fri Jun 27 01:05:33 UTC 2025 - Last Modified: Tue Jun 24 23:08:26 UTC 2025 - 155.6K bytes - Viewed (0) -
Character escape: \n, \u{...} - JavaScript | MDN
test("\x10"); // true /[\c_]/.test("\x1f"); // true...true /[\c*]/.test("\\"); // true /\c/.test("\\c"); // true /\c0/.test("\\c0");...developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Regular_expressions/Character_escapeRegistered: Fri Jun 27 00:53:12 UTC 2025 - Last Modified: Tue Jun 24 23:08:26 UTC 2025 - 154.1K bytes - Viewed (0) -
isNaN() - JavaScript | MDN
Parameters value The value to be tested. Return value true if the given...For number values, isNaN() tests if the number is the value NaN...developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/isNaNRegistered: Fri Jun 27 00:47:03 UTC 2025 - Last Modified: Tue Jun 24 23:08:16 UTC 2025 - 153.4K bytes - Viewed (0) -
TypedArray.prototype.filter() - JavaScript | MDN
that pass the test. If no elements pass the test, an empty typed...given typed array that pass the test implemented by the provided...developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/TypedArray/filterRegistered: Fri Jun 27 01:39:02 UTC 2025 - Last Modified: Fri Jun 27 00:58:13 UTC 2025 - 80.4K bytes - Viewed (0) -
Labeled statement - JavaScript | MDN
items) { for (const test of tests) { if (!test.pass(item)) { continue...true; for (const test of tests) { if (!test.pass(item)) { passed...developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Statements/labelRegistered: Fri Jun 27 01:02:52 UTC 2025 - Last Modified: Tue Jun 24 23:08:26 UTC 2025 - 162.3K bytes - Viewed (0) -
RegExp.input ($_) - JavaScript | MDN
test("foo"); // new test, non-matching RegExp.$_;..."hi there!" re.test("hi world!"); // new test, matching RegExp.$_;...developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/RegExp/inputRegistered: Fri Jun 27 02:16:20 UTC 2025 - Last Modified: Fri Jun 27 00:57:53 UTC 2025 - 69.6K bytes - Viewed (0) -
instanceof - JavaScript | MDN
The object to test. constructor Constructor to test against. Exceptions...(简体) The instanceof operator tests to see if the prototype property...developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Operators/instanceofRegistered: Fri Jun 27 01:04:41 UTC 2025 - Last Modified: Fri Jun 27 00:58:18 UTC 2025 - 170.2K bytes - Viewed (0) -
Symbol.toStringTag - JavaScript | MDN
js const test = document.createElement("button"); test.toString();..."[object HTMLButtonElement]" test[Symbol.toStringTag]; // "HTMLButtonElement"...developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Symbol/toStringTagRegistered: Fri Jun 27 01:24:21 UTC 2025 - Last Modified: Fri Jun 27 00:58:00 UTC 2025 - 76.3K bytes - Viewed (0)