HTML preprocessors can make writing HTML more powerful or convenient. For instance, Markdown is designed to be easier to write and read for text documents and you could write a loop in Pug.
In CodePen, whatever you write in the HTML editor is what goes within the <body>
tags in a basic HTML5 template. So you don't have access to higher-up elements like the <html>
tag. If you want to add classes there that can affect the whole document, this is the place to do it.
In CodePen, whatever you write in the HTML editor is what goes within the <body>
tags in a basic HTML5 template. If you need things in the <head>
of the document, put that code here.
The resource you are linking to is using the 'http' protocol, which may not work when the browser is using https.
CSS preprocessors help make authoring CSS easier. All of them offer things like variables and mixins to provide convenient abstractions.
It's a common practice to apply CSS to a page that styles elements such that they are consistent across all browsers. We offer two of the most popular choices: normalize.css and a reset. Or, choose Neither and nothing will be applied.
To get the best cross-browser support, it is a common practice to apply vendor prefixes to CSS properties and values that require them to work. For instance -webkit-
or -moz-
.
We offer two popular choices: Autoprefixer (which processes your CSS server-side) and -prefix-free (which applies prefixes via a script, client-side).
Any URL's added here will be added as <link>
s in order, and before the CSS in the editor. You can use the CSS from another Pen by using it's URL and the proper URL extention.
You can apply CSS to your Pen from any stylesheet on the web. Just put a URL to it here and we'll apply it, in the order you have them, before the CSS in the Pen itself.
You can also link to another Pen here (use the .css
URL Extension) and we'll pull the CSS from that Pen and include it. If it's using a matching preprocessor, use the appropriate URL Extension and we'll combine the code before preprocessing, so you can use the linked Pen as a true dependency.
JavaScript preprocessors can help make authoring JavaScript easier and more convenient.
Babel includes JSX processing.
Any URL's added here will be added as <script>
s in order, and run before the JavaScript in the editor. You can use the URL of any other Pen and it will include the JavaScript from that Pen.
You can apply a script from anywhere on the web to your Pen. Just put a URL to it here and we'll add it, in the order you have them, before the JavaScript in the Pen itself.
If the script you link to has the file extension of a preprocessor, we'll attempt to process it before applying.
You can also link to another Pen here, and we'll pull the JavaScript from that Pen and include it. If it's using a matching preprocessor, we'll combine the code before preprocessing, so you can use the linked Pen as a true dependency.
Search for and use JavaScript packages from npm here. By selecting a package, an import
statement will be added to the top of the JavaScript editor for this package.
Using packages here is powered by Skypack, which makes packages from npm not only available on a CDN, but prepares them for native JavaScript ES6 import
usage.
All packages are different, so refer to their docs for how they work.
If you're using React / ReactDOM, make sure to turn on Babel for the JSX processing.
If active, Pens will autosave every 30 seconds after being saved once.
If enabled, the preview panel updates automatically as you code. If disabled, use the "Run" button to update.
If enabled, your code will be formatted when you actively save your Pen. Note: your code becomes un-folded during formatting.
Visit your global Editor Settings.
<html>
<head>
<meta charset="utf-8" />
<meta
name="viewport"
content="initial-scale=1,maximum-scale=1,user-scalable=no"
/>
<!--
ArcGIS API for JavaScript, https://js.arcgis.com
For more information about the cim-lines-and-polygons sample,
read the original sample description at developers.arcgis.com.
https://developers.arcgis.com/javascript/latest/sample-code/cim-lines-and-polygons/index.html
-->
<title>
CIMSymbol lines and polygons | Sample | ArcGIS API for JavaScript 4.18
</title>
<style>
html,
body,
#viewDiv {
padding: 0;
margin: 0;
height: 100%;
width: 100%;
}
#symbolControls {
background-color: white;
padding: 10px;
width: 250px;
}
.esri-slider {
padding: 10px;
}
</style>
<link
rel="stylesheet"
href="https://js.arcgis.com/4.18/esri/themes/light/main.css"
/>
<script src="https://js.arcgis.com/4.18/"></script>
<script>
require([
"esri/views/MapView",
"esri/Map",
"esri/layers/FeatureLayer",
"esri/layers/VectorTileLayer",
"esri/widgets/Expand",
"esri/widgets/Slider",
"esri/widgets/Home",
"esri/symbols/support/cimSymbolUtils"
], function (
MapView,
Map,
FeatureLayer,
VectorTileLayer,
Expand,
Slider,
Home,
cimSymbolUtils
) {
// Tahoe Rim Trail feature layer
const rimTrail = new FeatureLayer({
outFields: ["*"],
url:
"https://sampleserver6.arcgisonline.com/arcgis/rest/services/USA/MapServer/1",
renderer: {
type: "simple",
symbol: {
type: "cim",
// CIM Line Symbol
data: {
type: "CIMSymbolReference",
symbol: {
type: "CIMLineSymbol",
symbolLayers: [
{
primitiveName: "highway",
// white dashed layer at center of the line
type: "CIMSolidStroke",
effects: [
{
type: "CIMGeometricEffectOffset",
offset: 5,
option: 0
}
],
enable: true, // must be set to true in order for the symbol layer to be visible
capStyle: "Butt",
joinStyle: "Round",
width: 1,
color: [255, 0, 0, 255]
},
{
primitiveName: "freeway",
// lighter green line layer that surrounds the dashes
type: "CIMSolidStroke",
effects: [
{
type: "CIMGeometricEffectOffset",
offset: -5,
option: 0
}
],
enable: true,
capStyle: "Butt",
joinStyle: "Round",
width: 3,
color: [56, 168, 0, 255]
}
]
},
primitiveOverrides: [
{
type: "CIMPrimitiveOverride",
primitiveName: "highway",
propertyName: "Color",
valueExpressionInfo: {
type: "CIMExpressionInfo",
title: "Size in pixels of inner ring at maxScale",
expression: `
var class = $feature.admn_class;
if(class=='Interstate'){
return 'rgb(255,128,0)'
// return [255,128,0,255]
}
return 'rgb(0,0,255)'
// return [0,0,255,255]
`,
returnType: "Default"
}
}
]
}
}
}
});
// Lake Tahoe feature layer
const lakeLayer = new FeatureLayer({
url:
"https://services.arcgis.com/V6ZHFr6zdgNZuVG0/arcgis/rest/services/Lake_Tahoe/FeatureServer",
renderer: {
type: "simple",
symbol: {
type: "cim",
data: {
type: "CIMSymbolReference",
symbol: {
// CIM polygon symbol
type: "CIMPolygonSymbol",
symbolLayers: [
{
// light blue outline around the polygon
type: "CIMSolidStroke",
enable: true,
width: 0.4,
color: [0, 92, 230, 255]
},
{
// light blue hatch fill
type: "CIMHatchFill",
enable: true,
lineSymbol: {
type: "CIMLineSymbol", // CIM line symbol that makes up the line inside the hatch fill
symbolLayers: [
{
type: "CIMSolidStroke",
effects: [
{
type: "CIMGeometricEffectDashes",
dashTemplate: [1, 2],
lineDashEnding: "FullPattern"
}
],
enable: true,
width: 1,
color: [0, 92, 230, 255]
}
]
},
rotation: 45, // rotation of the lines
separation: 4 // distance between lines in hatch fill
},
{
// solid blue fill background
type: "CIMSolidFill",
enable: true,
color: [151, 219, 242, 150]
}
]
}
}
}
}
});
// add trailheads feature layer as webstyle symbol
const trailheads = new FeatureLayer({
url:
"https://services.arcgis.com/V6ZHFr6zdgNZuVG0/arcgis/rest/services/TahoeTrailheads/FeatureServer",
renderer: {
type: "simple",
symbol: {
type: "web-style",
name: "trail",
styleName: "Esri2DPointSymbolsStyle"
}
}
});
// convert webstyle symbol to CIMSymbol
trailheads.renderer.symbol.fetchCIMSymbol().then(function (cimSymbol) {
trailheads.renderer.symbol = cimSymbol;
});
// set up the map and view
const map = new Map({
basemap: "gray-vector",
layers: [rimTrail, lakeLayer, trailheads] // add layers to the map
});
const view = new MapView({
container: "viewDiv",
map: map,
center: [-120, 39.05], // centered at Lake Tahoe
zoom: 9
});
const sizeSlider = new Slider({
container: "sizeSlider",
precision: 2,
min: 0,
max: 50,
values: [15.75] // starting size of the CIMPointSymbol
});
sizeSlider.on(["thumb-drag", "thumb-change"], (event) => {
const value = event.value;
document.getElementById("size").innerHTML = value;
const newSymbol = trailheads.renderer.symbol.clone(); // clone the current symbol
cimSymbolUtils.scaleCIMSymbolTo(newSymbol, value); // use CIM util function to scale the symbol to a new size
// update the renderer to the new symbol
trailheads.renderer = {
type: "simple",
symbol: newSymbol
};
});
const rotationSlider = new Slider({
container: "rotationSlider",
precision: 0,
min: 0,
max: 360,
values: [0] // starting rotation of the CIMPointSymbol
});
rotationSlider.on(["thumb-drag", "thumb-change"], (event) => {
const value = event.value;
document.getElementById("rotation").innerHTML = value;
const newSymbol = trailheads.renderer.symbol.clone(); // clone the current symbol
cimSymbolUtils.applyCIMSymbolRotation(newSymbol, value); // use CIM util function to change the rotation of the symbol
// update the renderer to the new symbol
trailheads.renderer = {
type: "simple",
symbol: newSymbol
};
});
// create and add the Expand widget for the CIMSymbol controls
const edits = new Expand({
view: view,
content: document.getElementById("symbolControls"),
expandIconClass: "esri-icon-edit",
expandTooltip: "Edit the CIMPointSymbol"
});
view.ui.add(edits, "top-right");
// create and add Home widget to the view
const home = new Home({
view: view
});
view.ui.add(home, "top-left");
});
</script>
</head>
<body>
<div id="viewDiv"></div>
<div id="symbolControls">
<h3>Edit Symbols</h3>
<div id="sizeSliderContainer">
<div>Size value: <span id="size">15.75</span></div>
<div id="sizeSlider"></div>
</div>
<div id="rotationSliderContainer">
<div>Rotation value: <span id="rotation">0</span></div>
<div id="rotationSlider"></div>
</div>
</div>
</body>
</html>
Also see: Tab Triggers