Run results for: Remove by splice vs copyWithin vs filter

Run details:

User agent: Mozilla/5.0 (iPad; CPU OS 14_2 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/14.0.1 Mobile/15E148 Safari/604.1

Browser: Mobile Safari 14

Operating system: iOS 14.2

Device Platform: Tablet

Date tested: 3 years ago

Test name	Executions per second
Delete by Splice	153374.2 Ops/sec
Delete by copyWithin	155806.6 Ops/sec
Delete by Filter	53927.8 Ops/sec

HTML Preparation code:

<script>
  var array = ["m1c6kzws0iubt8g0zlsug14i","xalskr21dm5ke5wczew154s4i","hvbfe3uq3pmoehpilh4zpvi","ffr2btp9rihf3qce770ttke29","ymwh11qu16qwqn5vaafxhia4i","1l7rj49636ddmk3cbszitchaor","bg1njla9dvdkdlw9mbz1l9pb9","201y3ambt118dt7j7bxc6ry66r","hsgzqv2ex2j9j8znv3uzbyb9","k8tuq5ucdx1whgkdcby44pldi","2sjycnx525scxzfxfmwl7q4cxr","18q32nqyo7moqa29e5h3434n29","hmcfquq61n9kb3lww75dk7qfr","fiwykuxxbn7r17ctqjxnptlnmi","4shgyrijl6au4ts680x2bj4i","soojj6fcsyt1n5qfajbxogvi","t3q3inmpnm2bpable646g8pvi","fikqz7u91h55408mcng6jkbj4i","900ywxmkqqfcw72se6jr307ldi","utq8ilmedjq9roylc3jjug14i","b3exkwvpdowgnzuybdfdo647vi","f5gz9fbaaji1u3yvf1h9w9udi","io84h5vop7aqtflg0kvlpu8fr","tkoiwzwsrxojr5l4m70j54s4i","dhb8srcmuv4qhe06xqqnmcayvi","c56ea0p8y6u8ze901m9kd9rudi","uqe8h36xrpy153x4d6ik0ggb9","yelg88k7uyih00t9dyytlnmi","ssstgjiqsd59uz7ywfdcs1yvi","pxl3vjar0fkhiaezatie5qaor","v3n2ttux3jwrfjpau06vquxr","bmvaw0s3bwn1a4vs4uewjnhfr","85fkix619psg7cifpgrcuqsemi","bbiseiz2spsffazrzo3c70hpvi","alhuo6uqqmaympild184a38fr","kqpfumshk7i8skr3by2j1nhfr","znz5gokd2kfhkqkcq4n9daemi","czlvxh76ludjxf15bglgpbvs4i","14tf648f3yg2jb5gn3qiz1if6r","f8l0bttpqr0iqm59tp2lw61or","x1mm8gtvvefr6sk613nqrrudi","ftinvepk94t5ye4xmbmrhpvi","4im9qe55yufgsykr8lgkchaor","acb1xr5iwg3w0e3lood4y4x6r","lzii2en5grtrfax29ng5h4cxr","pag6ybpnvsbydvmqq4r6bt9","ny74ak8g0hzhi7vbjxrzlg14i","sp2boul7p27muo2cccvxi529","qsb0a0hh75359p9crtvcgnwmi","bpxmh6rnp6v5guj1xyv2oz85mi","1g0vr5fl4o3yjwy1f8qi3pu8fr","i7q1qx3euqwgs0p9wcfa2lnmi","f7zem2nt9x5n4kdht4bjk5u3di","nhow0t8u04j469prt67fx0f6r","gceprisvu6kuphio5vbihpvi","gcf1sao3dfawbl4j1sc18m2t9","h54kruubj6lyfpn2m2xirudi","nnxayo2mw7mw3sqrhccjtt9","yyz8g949bsys42p6fnd0a4i","2q32t6vhchxv6vi5xv6m45nrk9","fjgufh8xhi964dfqcs99kke29","tee5l6f4dtlizgzeupw0icnmi","wtgrkjdvg5bwq4zfih957y14i","g2zfspl3t41f7v94m4qu84cxr","hkt2d913iegx1mjdn45vlhaor","e8fdk35sup06s2j3g224yrpb9","d8tponm7e9k7z89uc0jfgeewmi","g4lgdfnv7may0l3oyyrn6d2t9","6f3vt0vh2eynb2p76vo0f6r","d94o6bh6juykc7f4gnuufecdi","gmylglyiamkvsqlhg6kmrhpvi","081567s9oh9hmvtmpunh5s714i","xl1g7h89cp9blpahqhqwipb9","sgeofgqzd8rkhpuelstdl5wmi","ae9eraciq2mgeissj1bncul3di","3zesr2jixkwaua0oab3lnb3xr","6k8lvyr1aqzl1x5ahqqyh6ko6r","uyjxmtqnrzvj7mkyqmtoqolxr","v7wyvd1me4cclu3hws1owp14i","6irsdua6uwdwqvei8qrzbh85mi","n0sbm7x5wkzzggrl0h45tgldi","k83v48gl0bviwfzq35idx6r","qkobghxh0mt4petanqfbc5wmi","60z5d0wr3w7zylgbu8gn1att9","t90u3vzqzdnjv0soi4ftotj4i","nkymc9j93zv9edvmlipy14i","dx4fdypsrbj5b3550xggwlv7vi","yv17by62xu19ghzx2a3v7vi","t55ktqd3ljov5a3i1n1li8uxr","cz9ap58m6mt37pbxlwdcdte29","pqpzfsoldmg0gzz05uexywrk9","ee712q32urczvh48idbtvs4i","38kj9wrd0ejxnpb57o5x9zr529","e36ttd9hfzthrggniy57idaemi","uq73g0anboplz5q7bpooe0zfr","xg3b4368fve377qq4f5u92j4i","b632owgx2ygb1l0mue6x0f6r","g8tpj99bfrm4md4sb6o672e29","pas0sldlke88qdstobllhm2t9","1pocow1nps1yx9p44cz9gm0a4i","f2a8ggfb90fdehr54yb5fusor","hf63zal36gws5onwnvnm6lxr","2r4ywuccxuksi09fb2rxav2t9","7d9nkqdcq9c65jhwdfp5fp3nmi","o60tlguxb6hv6h4zqh4h7iudi","zp1d2dn8g2cf0qkhzjjbxogvi","eyxy61c1evhm28zml1znz5mi","ir7kld15wji237wrxgqilik9","075eo525bm3wh09lx1myxecdi","u8g8crawcm0p7crdphmy4x6r","wjizvba0e2b3r03z40e1giudi","cixtb0daqbwt7yllxzqr6hia4i","ttdmb53kea78hy5eg1trtqpvi","ilqxzffpb8vp8mwwkl4eipb9","cdxo3s7nyijrgrzegzxk2tvs4i","e7h6jwcfjx9soptf17f3gtlnmi","qw3sgzq2nwp569oqzrzoajor","jb586comqj04xugqkbzhyqfr","gnpfqrdmelljqsfvz59v34n29","2sscocvc3uw1wjjd64o8yqfr","a9uyhq7cfdfeh6bop458tcsor","ap3yqxuwdgusmuirh6yqcwhfr","d6p7jspcvm87kiml0t7upiudi","ejowkvwaftznw6v7qym5z5mi","badq37mn685ovjb2gln3zncdi","b8l7aur2qt0sl3xui1in0o1or","ghjkodm6qjnha4zm6um3oko6r","a8kxqdkfwvfrbjik4cm04fgvi","0qgixt0vb2zm4y7fwpicedbo6r","oh41cupy63hcngoi1kiall3di","es4vdwuc7i5srepnguuy9icnmi","1re1rrgf1crnimzse4kveljtt9","5ugu8wf1d7xi305ffqh4u0udi","6x8c9kbm2tzvq9pgjyr50tqpvi","a8z5scyojyee0cxewrbsnn4s4i","6mrih10uydj1isqnaq16ob6gvi","wee254lhbqk7ho2tiust0rudi","nypmu8g2qewnzhmk0nclbx1or","qyr2drqp2dw5cvvt4duuqsemi","shti85yf9o6kdnmem9ggb9","h09afu74n04x7wgh6ans46lxr","59tjykmakwvrgd25zmp6yiizfr","vt9qincway2w1hclwphode7b9","topdh5cxkzffvru2juso1dcxr","rlgvjy8yqawtc08hczydmfgvi","ddkhesqzojhepzoee6z23s1yvi","bnatylg6gn1nqm7wluf1j1yvi","y30jytwr0fh6gg3m1fol59udi","f2w8ifwpvbu4nh45axuaw0zfr","un76200x9ld5l43nt8o94fgvi","srturyfhbpqssu98xa8twqaor","036dflbwt1c369lg39vxx39pb9","0o6pe19bgipdg59q9k3ckjfw29","e4bcy3h0hjltqrf8c5x5pzaor","f8bjhocgpmvmo9ximhra1nhfr","87w9s39ypib7djbknn1edygb9","y9w8zu5jkhjrqelnrrtb21emi","rykwcdrestde95z1wnd59izfr","q834mccmrn14hban2aqgxpqfr","sr3uf1yffe4c4avzr6r49rudi","ea8s5g5sh72onhxmdz244vaemi","shxtolxu3w59y920d8ky8ehfr","4wlivut0n1ht80rs5lyf7ds4i","nueadpm2gt2vf38a7dhsvpldi","1zc4cxwo43gxeif9im1ltmx6r","9n6ci22odczmivmgz4wijm7vi","tpc7su4u7ez0kvkblw7ncow29","zksblo1sh7dwt6vlcihrara4i","p9jotkt2y2szpo31b66jvpldi","tl2w2crc3p524s300iacbx1or","9ttyz01etc45zqppvkkwklnmi","o6nj3qxy3a7iqyy06k7zoxbt9","d8imry74j85gerwwypp1wz5mi","77vkrqqmyr9py125czkw9x80k9","c1gv40vm2us435cqszncqbbj4i","9tfdorhnwnaqzforgj2k8d7vi","2d3cuqd0p2ur5zrbajwo4dkj4i","2jgvcdh5j7wyfuqdbgn8rxjemi","kadxxllve35upugf69qhyqfr","3te9re9k2hb9xkt63okbdfgvi","mm23z47tirqhfp56ynadlhaor","y4pgcsv2jl4vkk24ijuelv7vi","zjry6isasjpxkr6wahc15rk9","awy9qof4ebaj5behfv7dcgnwmi","5yecig7hoku5h2u1dco50cnmi","ztk3ia84nzgvd5c9amnjc3di","e4u4f3l2mdnqu9i9kas2lnmi","qqe4ygai2ufcst4q7csj1yvi","pg5um4aq6p6vzez4bg37ynwmi","t5jsb7riq3o3bqyhne5klnmi","teybuhw83srwyc0t6g92otj4i","9svwvf9u5qz9wzflvowzpk3xr","skzt68jucn2pky1xo6n31h5mi","mngrrjw94j3xgewe7ka603sor","xz4p7nump5nbfp0zilik9","ooinhusm3793joewdt8wfusor","fbabrl45owrboyhcz2xy2v5cdi","ubcwnem2lpc8k6n4r59daemi","d78k39ex2e37tfww7v7erpy14i","est573afhw1cg83xlxe6ogvi"];
</script>

Script Preparation code:

/* these functions assume that only one element matches, so they do not loop! */

function deleteBySplice (array, element) {
  var index = array.indexOf( element );
  if (index !== -1) {
  	array.splice( index, 1 );
  }
}

function deleteByCopyWithin (array, element) {
  var index = array.indexOf( element );
  if (index !== -1) {
  	array.copyWithin( index, index + 1 );
    --array.length;
  }
}

function deleteByFilter (array, element) {
  array = array.filter( el => el !== element );
}

Tests:

Delete by Splice
deleteBySplice( array, "uyjxmtqnrzvj7mkyqmtoqolxr" ); deleteBySplice( array, "m1c6kzws0iubt8g0zlsug14i" ); deleteBySplice( array, "4wlivut0n1ht80rs5lyf7ds4i" );
Delete by copyWithin
deleteByCopyWithin( array, "uyjxmtqnrzvj7mkyqmtoqolxr" ); deleteByCopyWithin( array, "m1c6kzws0iubt8g0zlsug14i" ); deleteByCopyWithin( array, "4wlivut0n1ht80rs5lyf7ds4i" );
Delete by Filter
deleteByFilter( array, "uyjxmtqnrzvj7mkyqmtoqolxr" ); deleteByFilter( array, "m1c6kzws0iubt8g0zlsug14i" ); deleteByFilter( array, "4wlivut0n1ht80rs5lyf7ds4i" );

Run results for: Remove by splice vs copyWithin vs filter

Deletion of an element from an array.

Delete by Splice

Delete by copyWithin

Delete by Filter