Is it possible to "buffer" DOM changes that happen in a loop (to increase performance)?

forced reflow while executing javascript
layout thrashing

To make it clear what I'm asking, here is my example (fiddle).

I have a list of ~500 random names. I have an input at the top that has live-style searching. On every keyup, the value of the input is taken, and every item in the list is matched against it. Items that don't match are hidden.

Subjectively, the performance is okay, but not great. If you type quickly there is a noticeable pause before the list updates. I haven't profiled the code, but the bottleneck is almost certainly the changes to the DOM and the reflows it causes.

I wonder if it's possible to "queue up" these changes and only actually apply them at the end of the loop. So it would be one giant reflow and not lots of little ones.

In another version of the fiddle, I used a RegExp to get more fancy with the matching and presentation. Even though I'm using more DOM manipulation in this one (adding/removing tags to enable match highlighting) the performance feels about the same. I did also try adding visible/hidden classes in CSS and just setting the elements' className to that because that is supposed to be better performing (search for javascript reflows & repaints stubbornella—I can't post more than 2 links) but in my testing (Firefox 54) I found it was worse. So I don't know what's going on there.

What I guess I'm actually asking is: how do I make this code faster?

InnerHTML slow?, because it has to look for HTML tags in the value, and parse it into DOM nodes. If you're just inserting plain text that doesn't contain any HTML tags, use textContent instead. Is it possible to increase the Tx buffer size an Rx buffer size individually? I will try using the 128 bytes buffer and reading faster from the port and see what will happen. Do you know at what rate does the processor fill the data into the output buffer if the is no manual delay?

Sometimes, thinking outside the box can be very rewarding...

CSS allows you to easily hide many elements with "display: none" and browsers are exceptionally well optimized when it comes to CSS.

So is there a way to apply this CSS rule to your searched term and let the browser do the job for you? (yes!)

var search = document.getElementById('s');
var list = document.getElementById('l');
var styling = document.getElementById('t');

var searchAction = function() {
    var term = search.value;

    if (term == '') styling.innerHTML = '';
    else styling.innerHTML = '#l>li:not([data-name *= "' + term + '"]) {display: none}';

var searchActivateEvent = function() {

search.addEventListener('keyup', searchActivateEvent, false);

var timeoutThing = {
    INPUT_TIMEOUT: 00, // ms
    saveTimeoutID: null,

    restartSaveTimeout: function(thingToDo) {
        var that = this;
        this.saveTimeoutID = window.setTimeout(function() {
        }, this.INPUT_TIMEOUT);

    cancelSaveTimeout: function() {
li {
    transition: heigwht .25s ease-in-out, opacity .75s ease-in-out;

span {
    background: wheat;
    border-radius: 2px;

li.hidden {
    display: none;

li.visibru {
    display: list-item;
<input id="s">
<style id="t"></style>
<ul id="l">
    <li data-name='Vicente Yeates'>Vicente Yeates</li>
    <li data-name='Bryant Mcmiller'>Bryant Mcmiller</li>
    <li data-name='Analisa Shetterly'>Analisa Shetterly</li>
    <li data-name='Dorotha Graniero'>Dorotha Graniero</li>
    <li data-name='Monte Laranjo'>Monte Laranjo</li>
    <li data-name='Ross Olynger'>Ross Olynger</li>
    <li data-name='Antione Ruehl'>Antione Ruehl</li>
    <li data-name='Shayla Lamprecht'>Shayla Lamprecht</li>
    <li data-name='Latasha Sarkodie'>Latasha Sarkodie</li>
    <li data-name='Duncan Kellems'>Duncan Kellems</li>
    <li data-name='Ike Yanos'>Ike Yanos</li>
    <li data-name='Whitley Catanese'>Whitley Catanese</li>
    <li data-name='Lisa Janek'>Lisa Janek</li>
    <li data-name='Lucas Ahrends'>Lucas Ahrends</li>
    <li data-name='Kena Firmin'>Kena Firmin</li>
    <li data-name='Doug Rardin'>Doug Rardin</li>
    <li data-name='Pilar Awender'>Pilar Awender</li>
    <li data-name='Melda Barlup'>Melda Barlup</li>
    <li data-name='Teodoro Bartunek'>Teodoro Bartunek</li>
    <li data-name='Amira Fiene'>Amira Fiene</li>
    <li data-name='Kris Ormsby'>Kris Ormsby</li>
    <li data-name='Digna Engelbert'>Digna Engelbert</li>
    <li data-name='Chase Schingeck'>Chase Schingeck</li>
    <li data-name='Marc Capraro'>Marc Capraro</li>
    <li data-name='Angele World'>Angele World</li>
    <li data-name='Rex Alvirez'>Rex Alvirez</li>
    <li data-name='Margarett Weyer'>Margarett Weyer</li>
    <li data-name='Cedric Nevils'>Cedric Nevils</li>
    <li data-name='Charisse Guglielmo'>Charisse Guglielmo</li>
    <li data-name='September Shedd'>September Shedd</li>
    <li data-name='Charlie Buffaloe'>Charlie Buffaloe</li>
    <li data-name='Andreas Totten'>Andreas Totten</li>
    <li data-name='Selma Almen'>Selma Almen</li>
    <li data-name='Karleen Lamarsh'>Karleen Lamarsh</li>
    <li data-name='Carlton Ence'>Carlton Ence</li>
    <li data-name='Laverna Cassio'>Laverna Cassio</li>
    <li data-name='Veta Oblinski'>Veta Oblinski</li>
    <li data-name='Mariko Oliveros'>Mariko Oliveros</li>
    <li data-name='Lasandra Ellsworth'>Lasandra Ellsworth</li>
    <li data-name='Jose Phinisee'>Jose Phinisee</li>
    <li data-name='Jody Karlson'>Jody Karlson</li>
    <li data-name='Sharice Horst'>Sharice Horst</li>
    <li data-name='Joshua Collar'>Joshua Collar</li>
    <li data-name='Alexander Starnaud'>Alexander Starnaud</li>
    <li data-name='Arthur Bachorski'>Arthur Bachorski</li>
    <li data-name='Ignacio Laubach'>Ignacio Laubach</li>
    <li data-name='Lucrecia Hildago'>Lucrecia Hildago</li>
    <li data-name='Natashia Barton'>Natashia Barton</li>
    <li data-name='Aimee Zumot'>Aimee Zumot</li>
    <li data-name='Ashley Topping'>Ashley Topping</li>
    <li data-name='Ceola Rosebrough'>Ceola Rosebrough</li>
    <li data-name='Steve Wellinghoff'>Steve Wellinghoff</li>
    <li data-name='Brant Bintz'>Brant Bintz</li>
    <li data-name='Enrique Spratley'>Enrique Spratley</li>
    <li data-name='Issac Braylock'>Issac Braylock</li>
    <li data-name='Odis Slingluff'>Odis Slingluff</li>
    <li data-name='Kara Louth'>Kara Louth</li>
    <li data-name='Columbus Delmuro'>Columbus Delmuro</li>
    <li data-name='Jenniffer Moree'>Jenniffer Moree</li>
    <li data-name='Mei Perfecto'>Mei Perfecto</li>
    <li data-name='Terri Buren'>Terri Buren</li>
    <li data-name='Andrea Figurelli'>Andrea Figurelli</li>
    <li data-name='Thersa Everhardt'>Thersa Everhardt</li>
    <li data-name='Raisa Rabuck'>Raisa Rabuck</li>
    <li data-name='Demarcus Bodman'>Demarcus Bodman</li>
    <li data-name='Javier Lovenduski'>Javier Lovenduski</li>
    <li data-name='Jackie Jeck'>Jackie Jeck</li>
    <li data-name='Cyrus Olivid'>Cyrus Olivid</li>
    <li data-name='Timmy Lozoya'>Timmy Lozoya</li>
    <li data-name='Eldridge Elton'>Eldridge Elton</li>
    <li data-name='Noble Abelson'>Noble Abelson</li>
    <li data-name='Marlys Cannell'>Marlys Cannell</li>
    <li data-name='Sylvie Laughery'>Sylvie Laughery</li>
    <li data-name='Bobbie Grahl'>Bobbie Grahl</li>
    <li data-name='Katharine Gillispie'>Katharine Gillispie</li>
    <li data-name='Kena Papik'>Kena Papik</li>
    <li data-name='Gordon Boda'>Gordon Boda</li>
    <li data-name='Dominick Moreida'>Dominick Moreida</li>
    <li data-name='Josue Schellman'>Josue Schellman</li>
    <li data-name='Wallace Bacho'>Wallace Bacho</li>
    <li data-name='Jeffry Griffins'>Jeffry Griffins</li>
    <li data-name='Stacia Corrett'>Stacia Corrett</li>
    <li data-name='Theron Orey'>Theron Orey</li>
    <li data-name='Pete Haering'>Pete Haering</li>
    <li data-name='Stewart Gommer'>Stewart Gommer</li>
    <li data-name='Delbert Thompsom'>Delbert Thompsom</li>
    <li data-name='Johna Dell'>Johna Dell</li>
    <li data-name='Rashad Beckham'>Rashad Beckham</li>
    <li data-name='Colby Callison'>Colby Callison</li>
    <li data-name='Keenan Hegan'>Keenan Hegan</li>
    <li data-name='Nia Rollans'>Nia Rollans</li>
    <li data-name='Marie Kahawai'>Marie Kahawai</li>
    <li data-name='Luz Keib'>Luz Keib</li>
    <li data-name='Yukiko Bohler'>Yukiko Bohler</li>
    <li data-name='Clotilde Golightley'>Clotilde Golightley</li>
    <li data-name='Franklyn Feichter'>Franklyn Feichter</li>
    <li data-name='Irving Kendi'>Irving Kendi</li>
    <li data-name='Willow Debettignies'>Willow Debettignies</li>
    <li data-name='Arnoldo Terzian'>Arnoldo Terzian</li>
    <li data-name='Billie Mancini'>Billie Mancini</li>
    <li data-name='John Vanleer'>John Vanleer</li>
    <li data-name='Jennell Bielke'>Jennell Bielke</li>
    <li data-name='Myong Curie'>Myong Curie</li>
    <li data-name='Tanesha Kirouac'>Tanesha Kirouac</li>
    <li data-name='Jim Conely'>Jim Conely</li>
    <li data-name='Samella Sonnek'>Samella Sonnek</li>
    <li data-name='Emily Golaszewski'>Emily Golaszewski</li>
    <li data-name='Homer Warsing'>Homer Warsing</li>
    <li data-name='Maryalice Scotten'>Maryalice Scotten</li>
    <li data-name='Kacie Seliba'>Kacie Seliba</li>
    <li data-name='Carolee Bordelon'>Carolee Bordelon</li>
    <li data-name='Kurt Moss'>Kurt Moss</li>
    <li data-name='Vanessa Mcquigg'>Vanessa Mcquigg</li>
    <li data-name='Joey Hatridge'>Joey Hatridge</li>
    <li data-name='Brande Pamphile'>Brande Pamphile</li>
    <li data-name='Jacelyn Floris'>Jacelyn Floris</li>
    <li data-name='Christen Brownrigg'>Christen Brownrigg</li>
    <li data-name='Signe Calvani'>Signe Calvani</li>
    <li data-name='Lenard Dela'>Lenard Dela</li>
    <li data-name='Jacob Aina'>Jacob Aina</li>
    <li data-name='Jovan Dozier'>Jovan Dozier</li>
    <li data-name='Alden Einhorn'>Alden Einhorn</li>
    <li data-name='Milagro Moua'>Milagro Moua</li>
    <li data-name='Zoe Blatti'>Zoe Blatti</li>
    <li data-name='Jon Reck'>Jon Reck</li>
    <li data-name='Dennis Katie'>Dennis Katie</li>
    <li data-name='Jenny Dewall'>Jenny Dewall</li>
    <li data-name='Lon Zable'>Lon Zable</li>
    <li data-name='Winfred Rentfro'>Winfred Rentfro</li>
    <li data-name='Lavette Feng'>Lavette Feng</li>
    <li data-name='Stacey Beloff'>Stacey Beloff</li>
    <li data-name='Earnest Hansrote'>Earnest Hansrote</li>
    <li data-name='Faustino Dewaters'>Faustino Dewaters</li>
    <li data-name='Jed Wears'>Jed Wears</li>
    <li data-name='Cassidy Coho'>Cassidy Coho</li>
    <li data-name='Frank Sparkes'>Frank Sparkes</li>
    <li data-name='Ike Hechinger'>Ike Hechinger</li>
    <li data-name='Carissa Labre'>Carissa Labre</li>
    <li data-name='Brain Vanderhoef'>Brain Vanderhoef</li>
    <li data-name='Bula Layel'>Bula Layel</li>
    <li data-name='Joesph Dolman'>Joesph Dolman</li>
    <li data-name='Roseanne Marcucci'>Roseanne Marcucci</li>
    <li data-name='Larissa Carmer'>Larissa Carmer</li>
    <li data-name='Ricki Fronek'>Ricki Fronek</li>
    <li data-name='Al Massing'>Al Massing</li>
    <li data-name='Stephen Baranow'>Stephen Baranow</li>
    <li data-name='Phillip Espinola'>Phillip Espinola</li>
    <li data-name='Emanuel Widmer'>Emanuel Widmer</li>
    <li data-name='Dylan Isassi'>Dylan Isassi</li>
    <li data-name='Daria Mound'>Daria Mound</li>
    <li data-name='Buffy Vokes'>Buffy Vokes</li>
    <li data-name='Hal Kimbril'>Hal Kimbril</li>
    <li data-name='Kiera Merson'>Kiera Merson</li>
    <li data-name='Trent Kravs'>Trent Kravs</li>
    <li data-name='Genaro Browm'>Genaro Browm</li>
    <li data-name='Kimber Reinert'>Kimber Reinert</li>
    <li data-name='Jeremiah Kaduk'>Jeremiah Kaduk</li>
    <li data-name='Nichelle Harney'>Nichelle Harney</li>
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    <li data-name='Shane Tierney'>Shane Tierney</li>
    <li data-name='Beata Delaplane'>Beata Delaplane</li>
    <li data-name='Ollie Staiger'>Ollie Staiger</li>
    <li data-name='Zane Dittmar'>Zane Dittmar</li>
    <li data-name='Shayne Toft'>Shayne Toft</li>
    <li data-name='Tillie Haeckel'>Tillie Haeckel</li>
    <li data-name='Federico Gilleland'>Federico Gilleland</li>
    <li data-name='Howard Skowronek'>Howard Skowronek</li>
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    <li data-name='Stacy Elsa'>Stacy Elsa</li>
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    <li data-name='Madeline Reglin'>Madeline Reglin</li>
    <li data-name='Keesha Mcgoogan'>Keesha Mcgoogan</li>
    <li data-name='Debi Malcom'>Debi Malcom</li>
    <li data-name='Carmine Finnigan'>Carmine Finnigan</li>
    <li data-name='Dannie Fry'>Dannie Fry</li>
    <li data-name='Eulah Skoog'>Eulah Skoog</li>
    <li data-name='Weston Hanzely'>Weston Hanzely</li>
    <li data-name='Jolynn Olpin'>Jolynn Olpin</li>
    <li data-name='Raymundo Gossling'>Raymundo Gossling</li>
    <li data-name='Eve Diflorio'>Eve Diflorio</li>
    <li data-name='Mariano Leal'>Mariano Leal</li>
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    <li data-name='Danielle Lazenson'>Danielle Lazenson</li>
    <li data-name='Ahmed Bhatti'>Ahmed Bhatti</li>
    <li data-name='Inga Bilek'>Inga Bilek</li>
    <li data-name='Huey Cockrel'>Huey Cockrel</li>
    <li data-name='Tam Mcenery'>Tam Mcenery</li>
    <li data-name='Gary Proietto'>Gary Proietto</li>
    <li data-name='Karol Bussler'>Karol Bussler</li>
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    <li data-name='Celina Schroy'>Celina Schroy</li>
    <li data-name='Dong Suitt'>Dong Suitt</li>
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    <li data-name='Domingo Opsahl'>Domingo Opsahl</li>
    <li data-name='Nigel Nesslein'>Nigel Nesslein</li>
    <li data-name='Toshia Nalty'>Toshia Nalty</li>
    <li data-name='Jonas Intriago'>Jonas Intriago</li>
    <li data-name='Cecila Crivaro'>Cecila Crivaro</li>
    <li data-name='Bea Schulke'>Bea Schulke</li>
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    <li data-name='Kena Nepa'>Kena Nepa</li>
    <li data-name='Dalia Burklow'>Dalia Burklow</li>
    <li data-name='Harlan Rotherham'>Harlan Rotherham</li>
    <li data-name='Connie Grosso'>Connie Grosso</li>
    <li data-name='Shelton Brass'>Shelton Brass</li>
    <li data-name='Yvette Hinch'>Yvette Hinch</li>
    <li data-name='Elroy Barriger'>Elroy Barriger</li>
    <li data-name='Earnest Henrickson'>Earnest Henrickson</li>
    <li data-name='Neal Singhisen'>Neal Singhisen</li>
    <li data-name='Kristofer Lunceford'>Kristofer Lunceford</li>
    <li data-name='Dewey Bureau'>Dewey Bureau</li>
    <li data-name='Lennie Cancro'>Lennie Cancro</li>
    <li data-name='Kay Cherubini'>Kay Cherubini</li>
    <li data-name='Moises Brugliera'>Moises Brugliera</li>
    <li data-name='Edgardo Schoenle'>Edgardo Schoenle</li>
    <li data-name='Lance Badena'>Lance Badena</li>
    <li data-name='Floyd Kneedler'>Floyd Kneedler</li>
    <li data-name='Adriana Gschwind'>Adriana Gschwind</li>
    <li data-name='Jon Wzorek'>Jon Wzorek</li>
    <li data-name='Trent Smyer'>Trent Smyer</li>
    <li data-name='Nicholle Sovel'>Nicholle Sovel</li>
    <li data-name='Hilda Maruschak'>Hilda Maruschak</li>
    <li data-name='Jonell Schwartzberg'>Jonell Schwartzberg</li>
    <li data-name='Maricela Sponsler'>Maricela Sponsler</li>
    <li data-name='Janise Kleinert'>Janise Kleinert</li>
    <li data-name='Domingo Atzhorn'>Domingo Atzhorn</li>
    <li data-name='Fabian Talsky'>Fabian Talsky</li>
    <li data-name='Mauro Mursko'>Mauro Mursko</li>
    <li data-name='Arica Salemo'>Arica Salemo</li>
    <li data-name='Simone Reinders'>Simone Reinders</li>
    <li data-name='Desmond Scheperle'>Desmond Scheperle</li>
    <li data-name='Lenora Rouhoff'>Lenora Rouhoff</li>
    <li data-name='Georgette Yagues'>Georgette Yagues</li>
    <li data-name='Mervin Kurkeyerian'>Mervin Kurkeyerian</li>
    <li data-name='Mckinley Legate'>Mckinley Legate</li>
    <li data-name='Argelia Douse'>Argelia Douse</li>
    <li data-name='George Baldrey'>George Baldrey</li>
    <li data-name='Brynn Hobkirk'>Brynn Hobkirk</li>
    <li data-name='Cyrus Milbrodt'>Cyrus Milbrodt</li>
    <li data-name='Terrance Kriete'>Terrance Kriete</li>
    <li data-name='Janiece Ajello'>Janiece Ajello</li>
    <li data-name='Roger Filippides'>Roger Filippides</li>
    <li data-name='Zonia Mcmillion'>Zonia Mcmillion</li>
    <li data-name='Sheba Kenzie'>Sheba Kenzie</li>
    <li data-name='Bea Hauth'>Bea Hauth</li>
    <li data-name='Jude Swets'>Jude Swets</li>
    <li data-name='Queen Simar'>Queen Simar</li>
    <li data-name='Armand Ruter'>Armand Ruter</li>
    <li data-name='Mariana Blogg'>Mariana Blogg</li>
    <li data-name='Lyle Peretti'>Lyle Peretti</li>
    <li data-name='Wilhemina Basila'>Wilhemina Basila</li>
    <li data-name='Kendrick Fennessy'>Kendrick Fennessy</li>
    <li data-name='Lee Dorkin'>Lee Dorkin</li>
    <li data-name='Monte Camba'>Monte Camba</li>
    <li data-name='Lashell Stenz'>Lashell Stenz</li>
    <li data-name='Waltraud Corte'>Waltraud Corte</li>
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    <li data-name='Raphael Bordwell'>Raphael Bordwell</li>
    <li data-name='Johnny Urtiaga'>Johnny Urtiaga</li>
    <li data-name='Johnie Africa'>Johnie Africa</li>
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    <li data-name='Dennis Heitland'>Dennis Heitland</li>
    <li data-name='Cindy Peete'>Cindy Peete</li>
    <li data-name='Jefferson Prekker'>Jefferson Prekker</li>
    <li data-name='Maddie Grossnickle'>Maddie Grossnickle</li>
    <li data-name='Ambrose Farahkhan'>Ambrose Farahkhan</li>
    <li data-name='Launa Horrigan'>Launa Horrigan</li>
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    <li data-name='Bernard Missler'>Bernard Missler</li>
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<script src="file:///tmp/s.js"></script>

Which one is more efficient, document.getElementbyId( "myId") or , ( "myId") will return you a DOM object whereas $("#myId) will return you a jquery object. Early as in late 1990's early 2000s JVM implementations did have some performance overhead in the actual allocation of Objects. This hasn't been the case since at least 2005. If you tune -Xms to support all the memory you need for your application to run correctly, the GC may never have to run and sweep most of the garbage in the modern GC

Why not use a debounce function from underscore to limit the number of calls to get new data? I generally use 3-400 ms delay for search input fields. This will reduce the number of times that the dom has changes and will also prevent the flashing of search results if the user is a slow typist.

Find details of debounce here

javascript, javascript - Is it possible to “buffer” DOM changes that happen in a loop (to increase performance)? -. to make clear i'm asking, here example  MATLAB ® handles data storage for you automatically. However, if memory is an issue, you can identify memory requirements and apply techniques to use memory more efficiently. Measure and Profile Code. Measure time required to run function. Start stopwatch timer. Read elapsed time from stopwatch. Elapsed CPU time.

As long as you do not query properties that trigger an immediate reflow the browser already batches the updates for you and only relayouts/repaints the page once your javascript is done. You should be able to verify this in the browser devtools.

But there is a trivial optimization for your code: avoid redundant DOM manipulations, especially for elements that are not visible anyway.

The else branch that gets applied for hidden items:

else {

the toPlainText manipulates the DOM even the element will be hidden or already is hidden.

20 Best Practices for Improving JavaScript Performance, Removing unnecessary loops or calls within loops will speed up your If you don't expect your DOM to change, storing a reference to the DOM or If you have scrollable DIVs, you can use a buffer to remove items from the DOM be able to download the asset faster, resulting in improved performance. In more complex projects, the buffer at the end of each task which protects the critical chain process from variation due to noncritical tasks is the. feeding buffer. The buffer in a theory of constraints system

Many JS mvvm frameworks such as Reactjs and Vuejs has applied the 'virtual DOM mechanism'.It will batch all DOM updates in one event loop and save you from the penalty of frequent DOM operations.I think you can have a loot at that implementations.

Big boost to DOM performance, Big boost to DOM performance - WebKit's innerHTML is 240% faster The changes were at the WebKit level, boosting performance for both Safari Changing the initial buffer size from 2^16 to 2^15 improved Chromium/Mac performance by 4x. more performance improvements will be possible for other important DOM  Two ways to speed up Excel macros by Susan Harkins in Microsoft Office , in Software on August 14, 2017, 1:56 PM PST When it comes to executing actions and performing tasks, faster is always better.

Hearings, Reports and Prints of the Senate Select Committee on , existing ray-trace computer program to evaluate optical or RF performance. with heat pipe and phase change effect methods of precision termperature control. elements to improve solution accuracy and efficiency. and automate portions of applications 506-18-11 includes the known dom” rediction techniques which  If you are using SQL Server version before 2012 and your operating system is Windows Server 2008 R2 updated with the latest Service Pack and of course the system is a dedicated system for SQL Server database engine, then you might not need to set max server memory, or you can allow the SQL Server buffer pool to grow dynamically.

Significant performance degradation when loading large number of , This component utilizes component contextualization to improve on flexibility That is, instead of many small changes to the DOM, buffer the changes --​environment=production )? Just checking because the performance But in terms of solving your immediate problem, there are several possible paths. Pat (BMath/CS) helped create VB 1.0 and later the .NET platform while working at Microsoft. Since 2000, he's focused on full-stack projects. C# is an object oriented, strongly-typed language. The strict type checking in C#, both at compile and run times, results in the majority of typical C#

Best Practices for Speeding Up Your Web Site, But is there a way to build pages with richer content while also This is the most important guideline for improving performance for first to a CDN is a relatively easy code change that will dramatically improve Flush the Buffer Early It makes a difference if you loop through 500 or 5000 DOM elements  Remove column from the system and turn on pump. If high back pressure still appears, then the blockage is in the system: blocked or crimped tubing. dirty pump frit. or clogged injection valve. If the pressure is normal, there is a problem with the column: clogged or damaged pre-column filter, guard column or frit.

  • would probably be an option
  • The DOM itself already does buffer all changes before reflowing.
  • You might want to use requestAnimationFrame to schedule the DOM change though
  • Your second fiddle is kinda broken. Don't use innerText, it takes into account the styling of the element - and when the content is hidden, innerText returns the empty string. Use textContent instead. Also, using innerHTML 500 times is kinda slow as well, it would be better to cache the nodes and texts and only alter their contents.
  • @victor They do that for diffing between their immutable output representations only. It's not necessary when we already know exactly whether and what to update.
  • Lots of good advice here, and the result is much faster. Thank you!
  • I should have mentioned that I already have something like this in the fiddles. The keyup actually calls/resets a timer which is currently 0ms for debugging purposes. Setting that to 200,500ms or similar does help, but it's still a bit slow.
  • Well there is only so much you are going to be able to do. You cant fix roundtrip time to the server, all you can do is minimize the number of times you make the roundtrip and the number of times you render the dom. I think the best thing to do is use the debounce, and set a loading indicator in the select field that disables the field (or not depending on what you want) until the search returns.
  • > roundtrip time to the server There's no server here. It's just a list of <li>s in the HTML that I'm manipulating.
  • Yeah I misread the question. Have you tried to profile the functions you are using to figure out the bottle neck? Your fiddle seems to run pretty quickly for me at least.