javascript - Works in .js but not in jQuery code, why? -


this 1 won't work (jquery) 

function convert(degree) {      var temp;      if (degree == 'c') {         temp = $('#c').val(temp * 9 / 5 + 32);         $('#f').val(temp);      } else {         temp = $('#f').val(temp - 32 * 5 / 9);         $('#c').val(temp);     } }

this 1 works (javascript)

function convert(degree) {     var temp;     if (degree == 'c') {         temp = document.getelementbyid("c").value * 9 / 5 + 32;         document.getelementbyid("f").value = temp;     } else {         temp = document.getelementbyid("f").value - 32 * 5 / 9;         document.getelementbyid("c").value = temp;     } }

html code here

<h1>temperature converter</h1>  <p><input id="c" onkeyup="convert('c')"> &deg; celsius</p>  <p><input id="f" onkeyup="convert('f')"> &deg; fahrenheit</p>

you not using .val() correctly. returns value when there no parameters, sets otherwise. this:

function convert(degree) {      var temp;      if (degree == 'c') {         temp = $('#c').val() * (9 / 5) + 32;         $('#f').val(temp);      } else {         temp = $('#f').val() - 32 * (5 / 9);         $('#c').val(temp);     } }

Comments

Post a Comment

Popular posts from this blog

php - Vagrant up error - Uncaught Reflection Exception: Class DOMDocument does not exist -

i've set bento/ubuntu-16.04 vagrant box using php 5.6, , getting following error quite few times when try , run shell script: "uncaught reflection exception: class domdocument not exist". i've tried adding following top of script (not together), each no success: "sudo apt-get install php5.6-xml", "sudo apt-get install php5-xml", "sudo apt-get install php-dom" i've tried resetting server "sudo service apache2 restart". does have suggestions?
Read more

vue.js - Create hooks for automated testing -

Image
qa guys complained can't automate frontend testing. because our html looks same outside. lazy hack did this <template> <div :role="$options.name"> ... </div> </template> <script> export default { name: 'vmcomponentname' } </script> which takes name script , applies html. in browser get: <div role="vmcomponentname"> ... </div> line :role="$options.name" goes in every component. is there dry er solutions? please share. additional details i'll explain in details looking for. imagine have vmusercreate form creates user. test case can create user . to automatically test without role, have use following selector: .wrapper > .wrapper > .wrapper > .submit-button the test extremely brittle (will break lot). if use roles can use [role="vmusercreateform"] .submit-button selector. many folds less brittle. so basically, i'm ...
Read more

Add new key value to json node in java -

i have json file : { "id":1, "name":"abc", "addressdetails": { "city":"newyork" } } i wanted add 1 more key-value ("pincode" : "414141") node 'addressdetails'. i tried using : objectmapper mapper = new objectmapper(); jsonnode root = mapper.readtree(new file("d://test.json")); objectnode node = mapper.createobjectnode(); node.with("addressdetails").put("pincode", "414141"); but it's not getting added, there way can ? you can try you should modify file path objectmapper mapper = new objectmapper(); objectnode nodes = mapper.readvalue(new file("d:\\test.txt"), objectnode.class); nodes.with("addressdetails").put("pincode", "414141"); mapper.writer().writevalue(new file("d:\\test.txt"), nodes);
Read more