D3.js interrupt() Function - GeeksforGeeks

23 Sep, 2020
The d3.interrupt() function in D3.js is used to interrupts the active transition of the specified name on the specified node and cancels any pending transitions with the specified name. This function is similar to the selection.interrupt() function.
Syntax:
d3.interrupt(node[, name])

Parameters: This function accepts the following parameter as mentioned above and described below:
name: This parameter is the transition instance.
node: This parameter is the node for the passing argument.
Return Value: This function returns an interrupted active transition.
Below programs illustrate the d3.interrupt() function in D3.js.
Example 1:
<!DOCTYPE html> <html> <head>     <meta charset="utf-8">    <script src="https://d3js.org/d3.v5.min.js">     </script></head>         <body>     <center>        <h1 style="color: green;">             Geeksforgeeks         </h1>                   <h3>D3.js | d3.interrupt() Function</h3>                   <svg width="400" height="250"></svg>                   <script>            var svg = d3.select("svg")                          var circle = svg.selectAll("circle")                .data([1, 2, 3, 4])                .enter()                .append("circle")                .style("fill", "red")                .attr("cx", 50)                .attr("cy", function(d) {                    return d * 50                })                .attr("r", 25)                .on("click", function() {                    d3.interrupt(d3.select(this))                })                          circle.transition()                .delay(function(d) {                    return d * 500;                })                .duration(function(d) {                    return d * 1000;                })                .attr("cx", 360)                .on("interrupt", function() {                    var elem = this;                    var targetValue = d3.active(this)                    .attrTween("cx")                                      .call(this)(1);                    d3.select(this).attr("cx", targetValue)                })        </script>     </center></body> </html>
Output:
Example 2:
<!DOCTYPE html> <html> <head>     <meta charset="utf-8">    <script src="https://d3js.org/d3.v5.min.js">     </script>           <style>        svg {          background-color: green;          display: block;        };    </style></head>         <body>     <center>        <h1 style="color: green;">             Geeksforgeeks         </h1>                   <h3>D3.js | d3.interrupt() Function</h3>                   <button>Stop</button>        <svg width="500" height="150"></svg>                   <script>            const svg = d3.select("svg");            const local = d3.local();            const button = d3.select("button");            const circle = svg.append("circle")                .attr("r", 25)                .attr("cx", 30)                .attr("cy", 75)                .style("fill", "yellow")                .style("stroke", "black");                           circle.transition()                .delay(5000)                .duration(10000)                .ease(d3.easeLinear)                .attr("cx", 580)                .on("interrupt", function() {                    local.set(this, +d3.select(this)                    .attr("cx"))                });                           button.on("click", function() {                if (d3.active(circle.node())) {                    d3.interrupt(circle);                    this.textContent = "Resume";                }                 else {                    circle.transition()                    .ease(d3.easeLinear)                    .duration(function() {                        return 10000 * (560 -                        local.get(this)) / 560;                    })                    .attr("cx", 580)                    this.textContent = "Stop";                }            })        </script>     </center></body>  </html>
Output:
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