Latest Release
React 19 is here. And it changes everything.
Actions, the use() hook, stable Server Components, the React Compiler, and much more.
NEW IN 19
React Actions
Forms and mutations are now first-class in React. Actions replace complex onSubmit handlers and state machines for async form handling. useActionState, useFormStatus, and useOptimistic make form UX dramatically simpler.
Live: Optimistic UI demo
React 19 is amazing!
NEW IN 19
The use() Hook
Read resources in render — promises, context, anything. use() can be called conditionally (unlike other hooks) and works seamlessly with <Suspense>.
User Data
Posts
Comments
STABLE IN 19
Server Components
Components that render on the server, send zero JavaScript to the client, and can fetch data directly. Now stable.
Server
Client
Layout0 KB JS
Header0 KB JS
ProductList0 KB JS
SearchBar~2 KB JS
AddToCart~2 KB JS
QUALITY OF LIFE
ref as a Prop
ref can now be passed as a regular prop — forwardRef is no longer needed.
// Before (React 18)
const Input = forwardRef((props, ref) => (
<input ref={ref} {...props} />
));
// After (React 19)
function Input({ ref, ...props }) {
return <input ref={ref} {...props} />;
}React doesn't make your app faster. It makes it feel faster.
Concurrent React can interrupt, pause, resume, or abandon renders. Toggle between modes to feel the difference.
Without useDeferredValueWith useDeferredValue
Item 1 — React component #1
Item 2 — React component #2
Item 3 — React component #3
Item 4 — React component #4
Item 5 — React component #5
Item 6 — React component #6
Item 7 — React component #7
Item 8 — React component #8
Item 9 — React component #9
Item 10 — React component #10
Item 11 — React component #11
Item 12 — React component #12
Item 13 — React component #13
Item 14 — React component #14
Item 15 — React component #15
Item 16 — React component #16
Item 17 — React component #17
Item 18 — React component #18
Item 19 — React component #19
Item 20 — React component #20
Item 21 — React component #21
Item 22 — React component #22
Item 23 — React component #23
Item 24 — React component #24
Item 25 — React component #25
Item 26 — React component #26
Item 27 — React component #27
Item 28 — React component #28
Item 29 — React component #29
Item 30 — React component #30
Item 31 — React component #31
Item 32 — React component #32
Item 33 — React component #33
Item 34 — React component #34
Item 35 — React component #35
Item 36 — React component #36
Item 37 — React component #37
Item 38 — React component #38
Item 39 — React component #39
Item 40 — React component #40
Item 41 — React component #41
Item 42 — React component #42
Item 43 — React component #43
Item 44 — React component #44
Item 45 — React component #45
Item 46 — React component #46
Item 47 — React component #47
Item 48 — React component #48
Item 49 — React component #49
Item 50 — React component #50
Item 51 — React component #51
Item 52 — React component #52
Item 53 — React component #53
Item 54 — React component #54
Item 55 — React component #55
Item 56 — React component #56
Item 57 — React component #57
Item 58 — React component #58
Item 59 — React component #59
Item 60 — React component #60
Item 61 — React component #61
Item 62 — React component #62
Item 63 — React component #63
Item 64 — React component #64
Item 65 — React component #65
Item 66 — React component #66
Item 67 — React component #67
Item 68 — React component #68
Item 69 — React component #69
Item 70 — React component #70
Item 71 — React component #71
Item 72 — React component #72
Item 73 — React component #73
Item 74 — React component #74
Item 75 — React component #75
Item 76 — React component #76
Item 77 — React component #77
Item 78 — React component #78
Item 79 — React component #79
Item 80 — React component #80
Item 81 — React component #81
Item 82 — React component #82
Item 83 — React component #83
Item 84 — React component #84
Item 85 — React component #85
Item 86 — React component #86
Item 87 — React component #87
Item 88 — React component #88
Item 89 — React component #89
Item 90 — React component #90
Item 91 — React component #91
Item 92 — React component #92
Item 93 — React component #93
Item 94 — React component #94
Item 95 — React component #95
Item 96 — React component #96
Item 97 — React component #97
Item 98 — React component #98
Item 99 — React component #99
Item 100 — React component #100
Item 101 — React component #101
Item 102 — React component #102
Item 103 — React component #103
Item 104 — React component #104
Item 105 — React component #105
Item 106 — React component #106
Item 107 — React component #107
Item 108 — React component #108
Item 109 — React component #109
Item 110 — React component #110
Item 111 — React component #111
Item 112 — React component #112
Item 113 — React component #113
Item 114 — React component #114
Item 115 — React component #115
Item 116 — React component #116
Item 117 — React component #117
Item 118 — React component #118
Item 119 — React component #119
Item 120 — React component #120
Item 121 — React component #121
Item 122 — React component #122
Item 123 — React component #123
Item 124 — React component #124
Item 125 — React component #125
Item 126 — React component #126
Item 127 — React component #127
Item 128 — React component #128
Item 129 — React component #129
Item 130 — React component #130
Item 131 — React component #131
Item 132 — React component #132
Item 133 — React component #133
Item 134 — React component #134
Item 135 — React component #135
Item 136 — React component #136
Item 137 — React component #137
Item 138 — React component #138
Item 139 — React component #139
Item 140 — React component #140
Item 141 — React component #141
Item 142 — React component #142
Item 143 — React component #143
Item 144 — React component #144
Item 145 — React component #145
Item 146 — React component #146
Item 147 — React component #147
Item 148 — React component #148
Item 149 — React component #149
Item 150 — React component #150
Item 151 — React component #151
Item 152 — React component #152
Item 153 — React component #153
Item 154 — React component #154
Item 155 — React component #155
Item 156 — React component #156
Item 157 — React component #157
Item 158 — React component #158
Item 159 — React component #159
Item 160 — React component #160
Item 161 — React component #161
Item 162 — React component #162
Item 163 — React component #163
Item 164 — React component #164
Item 165 — React component #165
Item 166 — React component #166
Item 167 — React component #167
Item 168 — React component #168
Item 169 — React component #169
Item 170 — React component #170
Item 171 — React component #171
Item 172 — React component #172
Item 173 — React component #173
Item 174 — React component #174
Item 175 — React component #175
Item 176 — React component #176
Item 177 — React component #177
Item 178 — React component #178
Item 179 — React component #179
Item 180 — React component #180
Item 181 — React component #181
Item 182 — React component #182
Item 183 — React component #183
Item 184 — React component #184
Item 185 — React component #185
Item 186 — React component #186
Item 187 — React component #187
Item 188 — React component #188
Item 189 — React component #189
Item 190 — React component #190
Item 191 — React component #191
Item 192 — React component #192
Item 193 — React component #193
Item 194 — React component #194
Item 195 — React component #195
Item 196 — React component #196
Item 197 — React component #197
Item 198 — React component #198
Item 199 — React component #199
Item 200 — React component #200
Item 201 — React component #201
Item 202 — React component #202
Item 203 — React component #203
Item 204 — React component #204
Item 205 — React component #205
Item 206 — React component #206
Item 207 — React component #207
Item 208 — React component #208
Item 209 — React component #209
Item 210 — React component #210
Item 211 — React component #211
Item 212 — React component #212
Item 213 — React component #213
Item 214 — React component #214
Item 215 — React component #215
Item 216 — React component #216
Item 217 — React component #217
Item 218 — React component #218
Item 219 — React component #219
Item 220 — React component #220
Item 221 — React component #221
Item 222 — React component #222
Item 223 — React component #223
Item 224 — React component #224
Item 225 — React component #225
Item 226 — React component #226
Item 227 — React component #227
Item 228 — React component #228
Item 229 — React component #229
Item 230 — React component #230
Item 231 — React component #231
Item 232 — React component #232
Item 233 — React component #233
Item 234 — React component #234
Item 235 — React component #235
Item 236 — React component #236
Item 237 — React component #237
Item 238 — React component #238
Item 239 — React component #239
Item 240 — React component #240
Item 241 — React component #241
Item 242 — React component #242
Item 243 — React component #243
Item 244 — React component #244
Item 245 — React component #245
Item 246 — React component #246
Item 247 — React component #247
Item 248 — React component #248
Item 249 — React component #249
Item 250 — React component #250
Item 251 — React component #251
Item 252 — React component #252
Item 253 — React component #253
Item 254 — React component #254
Item 255 — React component #255
Item 256 — React component #256
Item 257 — React component #257
Item 258 — React component #258
Item 259 — React component #259
Item 260 — React component #260
Item 261 — React component #261
Item 262 — React component #262
Item 263 — React component #263
Item 264 — React component #264
Item 265 — React component #265
Item 266 — React component #266
Item 267 — React component #267
Item 268 — React component #268
Item 269 — React component #269
Item 270 — React component #270
Item 271 — React component #271
Item 272 — React component #272
Item 273 — React component #273
Item 274 — React component #274
Item 275 — React component #275
Item 276 — React component #276
Item 277 — React component #277
Item 278 — React component #278
Item 279 — React component #279
Item 280 — React component #280
Item 281 — React component #281
Item 282 — React component #282
Item 283 — React component #283
Item 284 — React component #284
Item 285 — React component #285
Item 286 — React component #286
Item 287 — React component #287
Item 288 — React component #288
Item 289 — React component #289
Item 290 — React component #290
Item 291 — React component #291
Item 292 — React component #292
Item 293 — React component #293
Item 294 — React component #294
Item 295 — React component #295
Item 296 — React component #296
Item 297 — React component #297
Item 298 — React component #298
Item 299 — React component #299
Item 300 — React component #300
Item 301 — React component #301
Item 302 — React component #302
Item 303 — React component #303
Item 304 — React component #304
Item 305 — React component #305
Item 306 — React component #306
Item 307 — React component #307
Item 308 — React component #308
Item 309 — React component #309
Item 310 — React component #310
Item 311 — React component #311
Item 312 — React component #312
Item 313 — React component #313
Item 314 — React component #314
Item 315 — React component #315
Item 316 — React component #316
Item 317 — React component #317
Item 318 — React component #318
Item 319 — React component #319
Item 320 — React component #320
Item 321 — React component #321
Item 322 — React component #322
Item 323 — React component #323
Item 324 — React component #324
Item 325 — React component #325
Item 326 — React component #326
Item 327 — React component #327
Item 328 — React component #328
Item 329 — React component #329
Item 330 — React component #330
Item 331 — React component #331
Item 332 — React component #332
Item 333 — React component #333
Item 334 — React component #334
Item 335 — React component #335
Item 336 — React component #336
Item 337 — React component #337
Item 338 — React component #338
Item 339 — React component #339
Item 340 — React component #340
Item 341 — React component #341
Item 342 — React component #342
Item 343 — React component #343
Item 344 — React component #344
Item 345 — React component #345
Item 346 — React component #346
Item 347 — React component #347
Item 348 — React component #348
Item 349 — React component #349
Item 350 — React component #350
Item 351 — React component #351
Item 352 — React component #352
Item 353 — React component #353
Item 354 — React component #354
Item 355 — React component #355
Item 356 — React component #356
Item 357 — React component #357
Item 358 — React component #358
Item 359 — React component #359
Item 360 — React component #360
Item 361 — React component #361
Item 362 — React component #362
Item 363 — React component #363
Item 364 — React component #364
Item 365 — React component #365
Item 366 — React component #366
Item 367 — React component #367
Item 368 — React component #368
Item 369 — React component #369
Item 370 — React component #370
Item 371 — React component #371
Item 372 — React component #372
Item 373 — React component #373
Item 374 — React component #374
Item 375 — React component #375
Item 376 — React component #376
Item 377 — React component #377
Item 378 — React component #378
Item 379 — React component #379
Item 380 — React component #380
Item 381 — React component #381
Item 382 — React component #382
Item 383 — React component #383
Item 384 — React component #384
Item 385 — React component #385
Item 386 — React component #386
Item 387 — React component #387
Item 388 — React component #388
Item 389 — React component #389
Item 390 — React component #390
Item 391 — React component #391
Item 392 — React component #392
Item 393 — React component #393
Item 394 — React component #394
Item 395 — React component #395
Item 396 — React component #396
Item 397 — React component #397
Item 398 — React component #398
Item 399 — React component #399
Item 400 — React component #400
Item 401 — React component #401
Item 402 — React component #402
Item 403 — React component #403
Item 404 — React component #404
Item 405 — React component #405
Item 406 — React component #406
Item 407 — React component #407
Item 408 — React component #408
Item 409 — React component #409
Item 410 — React component #410
Item 411 — React component #411
Item 412 — React component #412
Item 413 — React component #413
Item 414 — React component #414
Item 415 — React component #415
Item 416 — React component #416
Item 417 — React component #417
Item 418 — React component #418
Item 419 — React component #419
Item 420 — React component #420
Item 421 — React component #421
Item 422 — React component #422
Item 423 — React component #423
Item 424 — React component #424
Item 425 — React component #425
Item 426 — React component #426
Item 427 — React component #427
Item 428 — React component #428
Item 429 — React component #429
Item 430 — React component #430
Item 431 — React component #431
Item 432 — React component #432
Item 433 — React component #433
Item 434 — React component #434
Item 435 — React component #435
Item 436 — React component #436
Item 437 — React component #437
Item 438 — React component #438
Item 439 — React component #439
Item 440 — React component #440
Item 441 — React component #441
Item 442 — React component #442
Item 443 — React component #443
Item 444 — React component #444
Item 445 — React component #445
Item 446 — React component #446
Item 447 — React component #447
Item 448 — React component #448
Item 449 — React component #449
Item 450 — React component #450
Item 451 — React component #451
Item 452 — React component #452
Item 453 — React component #453
Item 454 — React component #454
Item 455 — React component #455
Item 456 — React component #456
Item 457 — React component #457
Item 458 — React component #458
Item 459 — React component #459
Item 460 — React component #460
Item 461 — React component #461
Item 462 — React component #462
Item 463 — React component #463
Item 464 — React component #464
Item 465 — React component #465
Item 466 — React component #466
Item 467 — React component #467
Item 468 — React component #468
Item 469 — React component #469
Item 470 — React component #470
Item 471 — React component #471
Item 472 — React component #472
Item 473 — React component #473
Item 474 — React component #474
Item 475 — React component #475
Item 476 — React component #476
Item 477 — React component #477
Item 478 — React component #478
Item 479 — React component #479
Item 480 — React component #480
Item 481 — React component #481
Item 482 — React component #482
Item 483 — React component #483
Item 484 — React component #484
Item 485 — React component #485
Item 486 — React component #486
Item 487 — React component #487
Item 488 — React component #488
Item 489 — React component #489
Item 490 — React component #490
Item 491 — React component #491
Item 492 — React component #492
Item 493 — React component #493
Item 494 — React component #494
Item 495 — React component #495
Item 496 — React component #496
Item 497 — React component #497
Item 498 — React component #498
Item 499 — React component #499
Item 500 — React component #500
Standard: all 500 items re-render on every keystroke
React now optimizes your code for you.
The React Compiler automatically memoizes components and values — eliminating the need for manual useMemo, useCallback, and React.memo in most cases.
Without CompilerWith Compiler
Parent0 re-renders
Child A (static)0 re-renders
Child B (static)0 re-renders
Rendering Modes
Choose your rendering strategy. Each has different trade-offs for speed, SEO, and freshness.
1
BrowserRequests page
2
ServerSends empty HTML + JS bundle
3
BrowserDownloads & executes JS
4
BrowserFetches data via API
5
BrowserRenders UI