Built with blockbuilder.org
Using a slider to control the radius of a circle. First simple example to get started.
Built with blockbuilder.org
Using a slider to control the radius of a circle. First simple example to get started.
<!DOCTYPE html> | |
<head> | |
<meta charset="utf-8"> | |
<script src="https://cdnjs.cloudflare.com/ajax/libs/d3/3.5.5/d3.min.js"></script> | |
<style> | |
body { margin:0;position:fixed;top:0;right:0;bottom:0;left:0; } | |
svg { width:100%; height: 100% } | |
</style> | |
</head> | |
<body> | |
<h1>Use the slider to control the radius of the circle:</h1> | |
<input type="range" min="1" max="150" id="nRadius"> | |
<script> | |
d3.select("#nRadius").on("input", function() { | |
update(+this.value); | |
}); | |
function update(nRadius) { | |
// adjust the text on the range slider | |
d3.select("#nRadius-value").text(nRadius); | |
d3.select("#nRadius").property("value", nRadius); | |
// update the circle radius | |
svg.selectAll("circle") | |
.attr("r", nRadius); | |
} | |
// Feel free to change or delete any of the code you see! | |
var svg = d3.select("body").append("svg") | |
svg.append("circle") | |
.attr({cx: 200, cy: 200, r: 100}) | |
.style({ fill: "#5e91e2"}) | |
console.log("you are now rocking with d3", d3); | |
</script> | |
</body> |