I want to display all elements when the position is selected from a dropdown box when I select a position the correct elements display but when I select all to display all the elements nothing is displayed.
HTML Code:
<!DOCTYPE html>
<html>
<head>
<script type="text/javascript" src="jquery-3.3.1.min.js"></script>
<script type="text/javascript" src="underscore.js"></script>
<script type="text/javascript" src="players.js"></script>
<script type="text/javascript" src="playerFilter.js"></script>
</head>
<body>
<h1>Players by Position</h1>
<select id="position">
<option value=''>Select...</option>
<option value='All'>All</option>
<option value='Goalkeeper'>Goalkeeper</option>
<option value='Defender'>Defender</option>
<option value='Midfielder'>Midfielder</option>
<option value='Forward'>Forward</option>
</select>
<hr>
<div id="data"></div>
</body>
.JS File:
window.onload=function()
{
document.getElementById('position').onchange=function()
{
function getPlayerPosition(element)
{
if(element.Position == $("#position").val())
return true;
}
var playerPosition = _.filter(players, getPlayerPosition);
console.log(playerPosition);
$("#data").html("");
_.each(playerPosition, function(element){
$("#data").append(element.Name + "<br>");
});
}
}
Using only jquery you can do like this using [attribute-not-equal-selector] selector1
$("#position").on('change', function() {
var str = '';
if ($(this).val() === "All") {
var getAllElem = $("#position option").not("[value='All']").not("[value='']").each(function(i, v) {
str += $(v).text() + ' ';
})
$("#data").html(str);
} else {
$("#data").html($(this).val());
}
})
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<h1>Players by Position</h1>
<select id="position">
<option value=''>Select...</option>
<option value='All'>All</option>
<option value='Goalkeeper'>Goalkeeper</option>
<option value='Defender'>Defender</option>
<option value='Midfielder'>Midfielder</option>
<option value='Forward'>Forward</option>
</select>
<hr>
<div id="data"></div>
Related
Getting console error:
SyntaxError: Unexpected end of script.
Code here:
<!DOCTYPE html>
<html>
<head>
<script src="https://code.jquery.com/jquery-3.6.0.min.js" integrity="sha256-/xUj+3OJU5yExlq6GSYGSHk7tPXikynS7ogEvDej/m4=" crossorigin="anonymous"></script>
<link href="https://cdn.jsdelivr.net/npm/select2#4.1.0-rc.0/dist/css/select2.min.css" rel="stylesheet" />
<script src="https://cdn.jsdelivr.net/npm/select2#4.1.0-rc.0/dist/js/select2.min.js"></script>
<script> // In your Javascript (external .js resource or <script> tag)
$(document).ready(function() {
$("#cars2").select2();
});
</script>
<script>
<!--Need help here I think.-->
function myFunction(){
var x = document.getElementById("myDIV");
var y = this.value;
switch (y) {
case '1':
x.innerHTML = "<p>Volvo dude</p>";
break;
case '2':
x.innerHTML = "<p>Roy!</p>";
}
}
</script>
<style>
select {
width: 150px;
}
</style>
</head>
<body>
<div id="myDIV">Hello</div>
<label for="cars">Choose a car:</label>
<select id="cars2" onchange="myFunction()">
<option value="0">Pick something</option>
<option value="1">Volvo</option>
<option value="2">Saab</option>
<option value="3">Opel</option>
<option value="4">Audi</option>
</select>
</body>
</html>
I can't use the snippet editor 'cause all I have is an iPad.
JSFiddle here: https://jsfiddle.net/CoolBuys1290/59qmbt0f/19/
Please help me update the div text based on selecting an option.
Updated braces.
Thanks.
You were missing the correct way to pick the current selected option that, for example in the snippet I included here, I've got using the css selector select#cars2 option:selected and through the jQuery object, because your code was based on it, instead of the vanilla document.querySelector
$(document).ready(function() {
$("#cars2").select2();
});
function myFunction(event){
var x = document.getElementById("myDIV");
//here you are picking the selected option item
var y = $('select#cars2 option:selected').val();
switch (y) {
case '1':
x.innerHTML = "<p>Volvo dude</p>";
break;
case '2':
x.innerHTML = "<p>Roy!</p>";
}
}
select {
width: 150px;
}
<script
src="https://code.jquery.com/jquery-3.6.0.min.js" integrity="sha256-/xUj+3OJU5yExlq6GSYGSHk7tPXikynS7ogEvDej/m4="
crossorigin="anonymous"></script>
<link href="https://cdn.jsdelivr.net/npm/select2#4.1.0-rc.0/dist/css/select2.min.css" rel="stylesheet" />
<script src="https://cdn.jsdelivr.net/npm/select2#4.1.0-rc.0/dist/js/select2.min.js"></script>
<div id="myDIV">Hello</div>
<label for="cars">Choose a car:</label>
<select id="cars2" onchange="myFunction()">
<option value="0">Pick something</option>
<option value="1">Volvo</option>
<option value="2">Saab</option>
<option value="3">Opel</option>
<option value="4">Audi</option>
</select>
The jQuery slogan is "write less, do more!" - and the following takes it up in a way. I have created an array captions that supplies the captions for the div and - if nothing was provided - switches it back to "Hello".
const x=document.getElementById("myDIV"), captions=[null,'Volvo dude!','Roy!'];
$(document).ready(function() {
$("#cars2").select2().change(ev=>x.textContent=captions[ev.target.value]||"Hello");
});
select {
width: 150px;
}
<script
src="https://code.jquery.com/jquery-3.6.0.min.js" integrity="sha256-/xUj+3OJU5yExlq6GSYGSHk7tPXikynS7ogEvDej/m4="
crossorigin="anonymous"></script>
<link href="https://cdn.jsdelivr.net/npm/select2#4.1.0-rc.0/dist/css/select2.min.css" rel="stylesheet" />
<script src="https://cdn.jsdelivr.net/npm/select2#4.1.0-rc.0/dist/js/select2.min.js"></script>
<div id="myDIV">Hello</div>
<label for="cars">Choose a car:</label>
<select id="cars2">
<option value="0">Pick something</option>
<option value="1">Volvo</option>
<option value="2">Saab</option>
<option value="3">Opel</option>
<option value="4">Audi</option>
</select>
i have written the HTML and JS for concatenating the value from the dropdowns. But I am not able to get the result from it.
Code is as follows:
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8">
<title>jQuery Get Selected Option Value</title>
<script src="https://code.jquery.com/jquery-1.12.4.min.js"></script>
<script>
$(document).ready(function(){
$(".country",'.state').on('change',function(){
var selectedCountry = $(".country").find("option:selected").val();
var selectedState = $(".state").find("option:selected").val();
document.getElementById('demo').innerHTML= selectedCountry + " " + selectedState;
});
});
</script>
</head>
<body>
<form>
<label>Select Country:</label>
<select class="country">
<option value="usa">United States</option>
<option value="india">India</option>
<option value="uk">United Kingdom</option>
</select>
<select class="state">
<option value="Washington">Washington</option>
<option value='New Delhi'>New Delhi</option>
<option value='London'>London</option>
</select>
</form>
<p id="demo"></p>
</body>
</html>
Selector for Eventhandler is incorrect, and you can get the value of select box by $(selectboxSelector).val() easily.
$(document).ready(function(){
$('.country, .state').on('change',function(){
var selectedCountry = $(".country").val();
var selectedState = $(".state").val();
$('#demo').html( selectedCountry + " " + selectedState );
});
});
I used .style.backgroundColor = '#58eaa1' to change the background color of the dropdown list () but it changes the appearance of the dropdown list to 3d. I want the same appearance as in 'initial appearance' even after the change of background color.
Sample code (html)
function changecolor(){
var dropdownlist = document.getElementById('dropdownlist');
dropdownlist.style.backgroundColor = 'green';
}
<!DOCTYPE html>
<html lang="en">
<script src="test.js"></script>
<body>
<div class="header">
<select id="dropdownlist" onchange="changecolor()">
<option>0</option>
<option>1</option>
<option>2</option>
<option>3</option>
<option>4</option>
<option>5</option>
</select>
</div>
</body>
</html>
try it , i think this will solve your problem
<select style="background:#58eaa1 !important; border:1px solid #abadb3">
<option>hdd</option>
</select>
Here a working link: http://plnkr.co/edit/YbKyjIMVABcF8tZxlM3Y?p=preview
here the html:
// Code goes here
var changeBack = function (){
// select your select tag
var selectStatus = document.getElementById("selectStatus");
// get the number of the option currently selected
var optionSelected = selectStatus.selectedIndex;
// set his background-color to the class'name of the option
selectStatus.style.background = selectStatus.options[optionSelected].className;
//Then color each option in her proper class
for (var option in selectStatus.options){
selectStatus.options[option].style.background = selectStatus.options[option].className;
}
};
<!DOCTYPE html>
<html>
<head>
<link rel="stylesheet" href="style.css">
<script src="script.js"></script>
</head>
<!-- Just to color the select on page load -->
<body onload="changeBack()">
<tr>
<td>
<form action="">
<select id="selectStatus" onclick="changeBack()" name="statusApproved">
<!--Set your options a class with the color you want-->
<option class="green" value="Current:Approved">Current: Approved</option>
<option class="red" value="ChangeTo:Rejected">Change to: Rejected</option>
</select>
</form>
</td>
</tr>
</body>
</html>
var buton=document.getElementById("dropdownlist");
var allchar="0123456789ABCDEF";
buton.addEventListener("change",myFun,true);
function myFun(){
var randcol= "";
for(var i=0; i<6; i++){
randcol += allchar[Math.floor(Math.random()*16)];
}
document.getElementById("dropdownlist").style.background="#"+randcol;
}
<!DOCTYPE html>
<html lang="en">
<script src="test.js"></script>
<body>
<div class="header">
<select id="dropdownlist" >
<option class="col_color">0</option>
<option class="col_color">1</option>
<option class="col_color">2</option>
<option class="col_color">3</option>
<option class="col_color">4</option>
<option class="col_color">5</option>
</select>
</div>
</body>
</html>
I have a selectpicker multiselect dropdown. I'm not able to invoke 'onclick' when I select any option. But this works with the normal html multiple dropdown. How to make it work with selectpicker?
Here's the code:
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1">
<link rel="stylesheet"
href="//cdnjs.cloudflare.com/ajax/libs/bootstrap-
select/1.6.3/css/bootstrap-select.min.css" />
<link rel="stylesheet" href="https:
//maxcdn.bootstrapcdn.com/bootstrap/3.3.7/css/bootstrap.min.css">
<script
src=
"https://ajax.googleapis.com/ajax/libs/jquery/3.2.1/jquery.min.js">
</script>
<script
src=
"https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/js/bootstrap.min.js"
>
</script>
<script src="//cdnjs.cloudflare.com/ajax/libs/bootstrap-
select/1.6.3/js/bootstrap-select.min.js"></script>
</head>
<body>
<form action="/action_page.php">
<select class="selectpicker" name="cars" multiple>
<option value="volvo" onclick="myFunction(this)">Volvo</option>
<option value="bmw" onclick="myFunction(this)">Bmw</option>
<option value="opel" onclick="myFunction(this)">Opel</option>
<option value="audi" onclick="myFunction(this)">Audi</option>
</select>
<input type="submit">
</form>
<p>Hold down the Ctrl (windows) / Command (Mac) button to select
multiple options.</p>
<script type="text/javascript">
function myFunction(option) {
if (option.selected) {
alert(option.text);
}
}
</script>
</body>
</html>
I have changed the dropdownlist a bit below:
<select class="selectpicker" onchange="myFunction()" id="cars" name="cars" multiple>
<option value="volvo">Volvo</option>
<option value="bmw">Bmw</option>
<option value="opel">Opel</option>
<option value="audi">Audi</option>
</select>
Then modified your myFunction below:
var oldarr = [];
var newarr = [];
function myFunction() {
if ($("#cars option:selected").length == 1) {
oldarr = [];
oldarr.push($("#cars option:selected").val());
alert($("#cars option:selected").val());
}
else {
newarr = [];
$("#cars option:selected").each(function(i){
newarr.push($(this).val());
});
newitem = $(newarr).not(oldarr).get();
if (newitem.length > 0) {
alert(newitem[0]);
oldarr.push(newitem[0]);
}
else {
oldarr = newarr;
}
}
}
Basically, the oldarr will store the previous list of selected items. Then we insert the latest list of selected items into newarr. Then we compare what is in the newarr but not in the oldarr. This way we can filter out only the latest clicked item. If the user deselects an item instead, we just assign the newarr to oldarr.
try this, use forEach to find selected option
var selectEl = document.querySelector('.selectpicker');
var options = document.querySelectorAll('.selectpicker option');
selectEl.addEventListener('change', function() {
options.forEach(function(option) {
if(option.selected) { alert(option.value); }
})
})
<select class="selectpicker" name="cars" multiple>
<option value="volvo">Volvo</option>
<option value="bmw">Bmw</option>
<option value="opel">Opel</option>
<option value="audi">Audi</option>
</select>
or use jQuery find :select
$('.selectpicker').change(function() {
var thisValue = $(this).find(':selected').attr('value') ;
alert(thisValue);
})
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.9.1/jquery.min.js"></script>
<select class="selectpicker" name="cars" multiple>
<option value="volvo">Volvo</option>
<option value="bmw">Bmw</option>
<option value="opel">Opel</option>
<option value="audi">Audi</option>
</select>
Hope help :)
I have used jQuery to do this. since you use select from bootstrap, it will ordered as list not as options, thats why it didnt worked for you
$(function() {
$('.selectpicker').on('change', function(){
var selected = $(this).find("option:selected").text();
alert(selected);
});
});
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<link rel="stylesheet"
href="https://cdnjs.cloudflare.com/ajax/libs/bootstrap-select/1.6.3/css/bootstrap-select.min.css" />
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/css/bootstrap.min.css">
<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.2.1/jquery.min.js">
</script>
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/js/bootstrap.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/bootstrap-select/1.6.3/js/bootstrap-select.min.js"></script>
<form action="/action_page.php">
<select class="selectpicker" name="cars" multiple>
<option value="volvo" >Volvo</option>
<option value="bmw">Bmw</option>
<option value="opel">Opel</option>
<option value="audi">Audi</option>
</select>
<input type="submit">
</form>
<p>Hold down the Ctrl (windows) / Command (Mac) button to select
multiple options.</p>
Hope this helps..!
so I'm parsing CSV files into JSON then editing them so I can get arrays which jquery will use to make a graph.
I'm trying to make a dropdown menu so the user can select a CSV file from which the graph will be made. So far I've worked with local files so I used {}. I am new to jquery and a beginner in html so please explain what's going on in the solutions.
edit: the files directory is "CSV/Sheet1.csv", Sheet2.csv...
One way to do this is to write a function which opens a specific file when the dropdown menu is selected, but I'd rather just have a single function that takes input from my menu.
here's my html, style sheet and the javascript I want it linking to.
function handleFileSelect(evt) {
if ( !(evt.target && evt.target.files && evt.target.files[0]) ) {
return;
}
Papa.parse(evt.target.files[0], {
header: true,
dynamicTyping: true,
delimiter: ";",
complete: function (results) {
debugDataset(results);
renderDataset(results);
}
});
}
function debugDataset(dataset) {
var formatted = JSON.stringify(dataset, null, 2);
}
function renderDataset(dataset) {
var raw_data = dataset;
var formatted_data = {};
for(var i in raw_data.data) {
var keys = Object.keys(raw_data.data[i]);
for(var k = 0, len = keys.length; k < len; k++) {
if(typeof formatted_data[keys[k]] !== "undefined") {
formatted_data[keys[k]].push(raw_data.data[i][keys[k]]);
} else {
formatted_data[keys[k]] = new Array(raw_data.data[i][keys[k]]);
}
}
}
console.log(formatted_data);
}
$(function () {
$("#csv-file").change(handleFileSelect);
});
.graphbox {
width:500px;
height:500px;
border:1px solid black;
padding:5px;
margin:auto;
}
.dropdownmenubox {
width:500px;
height:23px;
margin:auto;
border:1px solid black;
padding:5px;
}
.dropdownmenu {
width:500px;
margin:auto;
}
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<!DOCTYPE html>
<html>
<head>
<title>grafi revije</title>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<script src="js/libs/jquery/jquery.js"></script>
<script src="js/libs/PapaParse/papaparse.js"></script>
<script src="index.js"></script>
<link type="text/css" rel="stylesheet" href="index.css"/>
</head>
<body>
<div class="graphbox"></div>
<div class="dropdownmenubox">
<select class="dropdownmenu">
<option value="1">1</option>
<option value="2">2</option>
<option value="3">3</option>
<option value="4">4</option>
<option value="5">5</option>
<option value="6">6</option>
<option value="7">7</option>
<option value="8">8</option>
<option value="9">9</option>
<option value="10">10</option>
<option value="11">11</option>
<option value="12">12</option>
<option value="13">13</option>
</select>
</div>
</body>
</html>
so the solution I'm currently using is this, and it works:
<!DOCTYPE html>
<html>
<head>
<title>grafi revije</title>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<script src="js/jquery.js"></script>
<script src="js/papaparse.js"></script>
<link type="text/css" rel="stylesheet" href="index.css"/>
</head>
<body>
<div class="graphbox"></div>
<div class="dropdownmenubox">
<select name="CSV">
<option value="CSV/Sheet1.csv">1</option>
<option value="CSV/Sheet2.csv">2</option>
<option value="CSV/Sheet3.csv">3</option>
<option value="CSV/Sheet4.csv">4</option>
<option value="CSV/Sheet5.csv">5</option>
<option value="CSV/Sheet6.csv">6</option>
<option value="CSV/Sheet7.csv">7</option>
<option value="CSV/Sheet8.csv">8</option>
<option value="CSV/Sheet9.csv">9</option>
<option value="CSV/Sheet10.csv" selected="selected">10</option>
<option value="CSV/Sheet11.csv">11</option>
<option value="CSV/Sheet12.csv">12</option>
<option value="CSV/Sheet13.csv">13</option>
</select>
</div>
<script>
$( "select" ).change(function () {
$( "select option:selected" ).each(function() {
var variable = $(this).val();
console.log(variable);
Papa.parse(variable, {
dynamicTyping: true,
download: true,
complete: function(results) {
console.log(results);
}
});
});
})
.change();
</script>
</body>
</html>