javascript - JQuery - Selecting by class doesn't work -

-

i new , i've started writing things myself, , have small problem, selecting class doesn't work me. use tampermonkey write search phrase google search (www.gooogle.com). getting element id works fine:

$("#lst-ib").val("something");

but getting class doesn't work:

$(".gsfi").val("something");

i tried adding code make run after dom ready, looks this:

$(document).ready(function() {     $(".gsfi").val("something"); });

why doesn't work?

from question there should not chance of issues. if set value of element should happen. if thinking setting value of element change text of div, wrong. setting value of html element not change content of div. need set text of div. have attached sample code snippet setting value of element , changing text of element.

<!doctype html>  <html>  <head>  <script src="https://ajax.googleapis.com/ajax/libs/jquery/3.1.1/jquery.min.js"></script>  <script>    $(document).ready(function(){      $(".test").val("value1");      $("#test").val("value2");  });    function alertvalues(){  	console.log($(".test").val());      console.log($("#test").val());  }    function changetext(){  	$(".test").text("changed content 1");      $("#test").text("changed content 2");  }  </script>  </head>  <body>    <div class="test">sample text 1</div>  <div id="test">sample text 2</div>  <button onclick="alertvalues()">log values</button>  <button onclick="changetext()">change text</button>    </body>  </html>


Comments

Post a Comment

Popular posts from this blog

javascript - React Maximum Callstack when adding component -

-
i have list component getting information local json file if following works expected. import react 'react'; import casestudies './case-studies.json'; import casestudyitem './case-study-list'; const casestudylist = () => { const casestudyitems = casestudies.map( casestudy => { console.log(casestudy); return ( <div key={casestudy.name}>{casestudy.name}</div> ); }); return ( <ul> {casestudyitems} </ul> ); } export default casestudylist; the expected number of case studies printed out no problem. if replace div inside of casestudies.map statement following <casestudyitem key={casestudy.id} casestudy={casestudy} /> i "maximum callstack size exceed error" if add log statement in there shows spitting out hundred , hundreds of items. cause this? in case needed here casestudyitem component, blank testing purposes. import
Read more

javascript - Uncaught FirebaseError: Messaging: This method is available in a Window context -

-
i'm using firebase service worker web push notification. currently, facing error: uncaught firebaseerror: messaging: method available in window context. (messaging/only-available-in-window). i using website on desktop register sw. how resolve issue? error stack i'm getting in console. browsererrormessage: "failed register serviceworker: serviceworker script evaluation failed" code :"messaging/failed-serviceworker-registration" message :"messaging: unable register default service worker. failed register serviceworker: serviceworker script evaluation failed (messaging/failed-serviceworker-registration)." stack: "firebaseerror: messaging: unable register default service worker. failed register serviceworker: serviceworker script evaluation failed (messaging/failed-serviceworker-registration).↵ @ https://www.gstatic.com/firebasejs/3.7.0/firebase.js:555:225" __proto__: error thank you this method should there in main
Read more

correlation - Autocorrelation in Matlab WITHOUT xcorr -

-
so i'm expected make autocorrelation of multiple signals (in order see difference of power spectrum it's irrelevant) note: don't want other way resolve exercise explanation problem :) the signals periodic , data length multiple of period. the problem don't same answer xcorr function of matlab. i'm using classic (i think) r_x(lag) = sum(k=-inf +inf) of x(k)*x(k-lag). when searching answer found other method 1 used using basically: ifft(fft().*conj(fft())) if understood correctly taking inverse fourier transform of periodigram equivalent power spectrum, fourier transform of autocorrelation. don't know why "classic" way doesn't work.. can please explain why/if code wrong? if don't want run code can go directly % ! autocorrelation! code: % making prbs y, of period 2^size(a,1) -1 , span [-lambda,lambda] = [ 1 0 0 0 0 1;... 1 0 0 0 0 0;... 0 1 0 0 0 0;... 0 0 1 0 0 0;... 0 0 0 1 0 0;... 0 0 0 0 1 0]; c = [
Read more