jquery - How to check Javascripts are disabled by proxy -

-

i not know weather there way solve or not, i'm asking because believe place of genius people. anyways, know if use <noscript></noscript> tag within html document , if user viewing page , have javascript disabled browser see no script message. if javascript has been disabled proxy? many wifi networks needs manually input proxy use internet , many of them disabled js on proxy proxy server. in case if visit same page, page see javascript has been enabled browser, disabled proxy. if there way check weather javascript has been disabled proxy(if using) , showing alert message this? glad if can how implement wordpress , without wordpress. :)

thanks.

you can show message default , remove or hide javascript, e.g.:

<div id="jsalert">javascript disabled in environment.</div> <script> (function() {     var elm = document.getelementbyid("jsalert");     elm.parentnode.removechild(elm); })(); </script> <!-- continue content here -->

if script tags have been stripped proxy (which i'm very unusual; @ least, i've never seen it), of course script won't there run, , div show. if script present, remove div.

by following div script immediately (which perfectly fine, no need "dom ready" stuff delay things), odds of div "flashing" briefly on page in common case (where javascript enabled , not stripped out) low. not zero, low.

if believe proxy doesn't strip out script tags instead blocks downloads of javascript files (which dumb), can change above use javascript file, beware doing either hold rendering of page (if use <script src="...">) or increase (dramatically) odds of div "flashing" on page briefly (if load script asynchronously).

this specific use-case general practice called "progressive enhancement" (or "graceful degradation," people prefer first). that's ensure page presented correctly , usefully in case javascript not available, , use javascript add behaviors page if javascript enabled. in case, "useful" thing you're doing saying javascript isn't running reason, it's different thing, it's same principle.


Comments

Post a Comment

Popular posts from this blog

Perl - how to grep a block of text from a file -

-
it can in xml or text format. how in general grep block of text in perl? <track type="ws"> <range> <rangestart>0</rangestart> <rangeend>146.912</rangeend> <locationindex>0</locationindex> <propertyindex>0</propertyindex> </range> </track> <track type="ps" id="1"> <range> <rangestart>0</rangestart> <rangeend>146.912</rangeend> <locationindex>1</locationindex> <propertyindex>1</propertyindex> </range> </track> i want grep type="ps" , till </range> . one solution open file, read line line , match block. open(fh, "file.txt"); foreach $line (<fh>) { if ($line =~ m/type="cc"(.*?)<\/range>/) { print $1; } } but there more optimal solution without reading file line l
Read more

delphi - How to remove all the grips on a coolbar if I have several coolbands? -

-
Image
if set mycoolbar.fixedorder true,only grip on first band hidden. well,if use delphi 7 create vcl forms application,then put coolbar on , create 3 coolbans hold other controls,only grip , top coolbands can hidden setting mycoolbar.fixedorder:=true. i've uploaded picture make things clear. you got fixedorder property wrong. fixed property not allow bands rearranged if set true . setting property of coolbar true keep user changing bands order @ runtime, user can still move , resize bands. can give advice can do, actual solution problem, well, have wait answer. my advice use 3 coolbars in row , setting "fixedorder" property true , bandborderstyle bsnone . way grip hidden on of them. about property, it's not bug of ide, actual preference of property.
Read more

javascript - Animating array of divs; only the final element is modified -

-
this baffling me @ moment. i'm experienced programmer looking throw bit of surprise fiancee on countdown page our wedding. desired effect simulated confetti falling behind main page. setup follows: i have array of divs in javascript. each div absolutely positioned on page. have interval set updates every 50 or milliseconds. on each tick, run loop on array of divs, , calculations , update positions. problem problem having, however, though can see divs created, stored array, , modified (in case, each has slight randomized rotation) during initialization phase, once tick update position starts, div stored in whatever last slot of array gets position updated. tried hard-coding each div index testing purposes, strictly last element update position. upon printing current "left" , "top" style values each div before , after calculations shows value has been changed, no visible change noticeable. here's basic code: javascript var container;
Read more