javascript - Many instances of ngIf vs ngShow for complex UI and forms -



javascript - Many instances of ngIf vs ngShow for complex UI and forms -

i found few questions regarding ngshow vs ngif nil addressed utilize case well.

alternative ng-show/-hide or how load relevant section of dom what difference between ng-if , ng-show/ng-hide when favor ng-if vs. ng-show/ng-hide?

i understand differences between 2 directives application many conditional ui elements (content, toolbar buttons, dropdowns, form fields, etc - of in ngrepeats) improve selection - ngshow or ngif? user navigates application , loads different content ui, these conditions evaluated happen regularly opposed 1 time might user preferences or permissions. also, much of content conditionally displayed contains {{bindings}}. number of watches concern ngshow while big number of dom manipulations concerns me ngif.

is there best practice or guidance type of situation? there threshold 1 makes sense on other? or matter of trying both determine performance impacts of each (easier said done)?

always utilize ng-if if possible. content not in dom must not watched etc. if have bindings. hence performs better. utilize ng-show if

you have complicated event handlers on dom elements can hidden the hide/show value changes extremely (dom manipulation expensive)

javascript angularjs

Comments

Post a Comment

Popular posts from this blog

c - Compilation of a code: unkown type name string -

c - Compilation of a code: unkown type name string - i have next lines of code compiler says following: "unknown type name 'string'" both in declaration , definition of function. can tell me what's wrong? thanks. #include <stdio.h> #include <stdlib.h> #include <string.h> void frecognizeclient(string *actualclient) there no string type in c. need utilize array so: char array[10]; then can pass in function: void frecognizeclient(char *actualclient); c arrays string compilation
Read more

ubuntu - Bash Script to Check That Files Are Being Created -

ubuntu - Bash Script to Check That Files Are Being Created - we have amazon ec2 instance upload output our security cameras. every , then, cameras have issue, stop uploaded, , need rebooted. easy way determine seeing if files not beingness created. problem creates lots , lots of files. if utilize find -ctime, takes long time script run. there faster way check see if files have been created since yesterday? need capture result, (yes there files, or not there not,) , email message, nice have didn't take half hr run. #!/bin/bash find /vol/security_ftp/west -ctime -1 find /vol/security_ftp/backentrance -ctime -1 find /vol/security_ftp/boardroomdoor -ctime -1 find /vol/security_ftp/mainentrance -ctime -1 find /vol/security_ftp/north -ctime -1 find /vol/security_ftp/south -ctime -1 using find natural solution, if must avoid it, can see newest file in directory using ls , sorting output according ctime, eg. ls /vol/security_ftp/west -clt | head --lines=1 ...
Read more

Php operator `break` doesn't stop while -

Php operator `break` doesn't stop while - have weird issue, break doesn't break while loop , maintain rotating. logically should break cycle , set output while ($c++ != 5) { // here curl request, doesn't relevant have removed preg_match("!<.*?>(\s*)[^<>]*?{$to}<!", $resp, $result) ; // echo 'cnt = ' .count($result).'<br>'; if(!count($result)) { $amount = 0; echo 'sleep called'; sleep(4); exit; continue; } else { $amount = trim(@$result[1]); $amount = round($amount + $amount * $exchange_ratio, $precision); echo 'break happen<br>'; break; } } so output cnt = 2 break happen cnt = 0 sleep called so skipped break , maintain rotating. how so? edit works fine on localhost issue php version? ...
Read more