D3 Examples - 17 - Multiple HTML inputs linked with d3.js

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<!DOCTYPE html>
<head>
  <meta charset="utf-8">
  <title> Double input Test </title>
  <script src="https://d3js.org/d3.v4.min.js"></script>
  <style>
    body { margin:0;position:fixed;top:0;right:0;bottom:0;left:0; }
  </style>
</head>
​
<p>
  <label for="nHeight"
         style="display: inline-block; width: 240px; text-align:right">
    height= <span id="nHeight-value">...</span>
    <input type="range" min="1" max="280" id="nHeight">
  </label>
</p>
​
<p>
  <label for="nWidth"
         style="display: inline-block; width: 240px; text-align:right">
    height= <span id="nWidth-value">...</span>
    <input type="range" min="1" max="280" id="nWidth">
  </label>
</p>
​
<script>
  
  var width = 600;
  var height = 300;
  
  var holder = d3.select("body")
    .append("svg")
    .attr("width", width)
    .attr("height", height);
  
  //draw a rectangle
  holder.append("rect")
    .attr("x", 300)
    .attr("y", 150)
    .style("fill", "none")
    .style("stroke", "blue")
    .attr("width", 150)
    .attr("height", 200);
  
  //Read a change in the height input
  d3.select("#nHeight").on("input", function () {
    updateHeight(+this.value);
  })
  
   //Read a change in the width input
  d3.select("#nWidth").on("input", function () {
    updateWidth(+this.value);
  })
  
  //Update the values
  updateHeight(150);
  updateWidth(100);
  
  //Update the height attributes
  function updateHeight(nHeight) {
    
    //adjust the text on the range slider
    d3.select("#nHeight-value").text(nHeight);
    d3.select("#nHeight").property("value", nHeight);
    
    //Update the rectangle height
    holder.selectAll("rect")
        .attr("y", 150-(nHeight/2))
        .attr("height", nHeight);
    
  }
  
  function updateWidth(nWidth) {
    
    d3.select("#nWidth-value").text(nWidth);
    d3.select("#nWidth").property("value", nWidth);
    
    holder.selectAll("rect")
        .attr("x", 300-(nWidth/2))
        .attr("width", nWidth);
    
  }
  
</script>
    