d3 disable context menu 1

d3 disable context menu

.on("contextmenu", function (d, i) {
    d3.event.preventDefault();
    // react on right-clicking
})

Here is what the above code is Doing:
1. We’re creating a new variable called `svg` and setting it equal to the `d3.select` function.
2. We’re using the `.append` method to append a new `svg` element to the `body` of our HTML document.
3. We’re using the `.attr` method to set the `width` and `height` attributes of our `svg` element.
4. We’re using the `.style` method to set the `background-color` of our `svg` element.
5. We’re using the `.on` method to add an event listener to our `svg` element.
6. We’re using the `.append` method to append a new `circle` element to our `svg` element.
7. We’re using the `.attr` method to set the `cx`, `cy`, `r`, and `fill` attributes of our `circle` element.
8. We’re using the `.on` method to add an event listener to our `circle` element.
9. We’re using the `.on` method to add an event listener to our `circle` element.

Now, let’s add some interactivity to our visualization.

### Adding Interactivity

Let’s add some interactivity to our visualization.

First, let’s add a `mouseover` event listener to our `circle` element.

“`js
circle.on(“mouseover”, function (d, i) {
d3.select(this).transition()
.duration(500)
.attr(“r”, 20)
.attr(“fill”, “red”);
})
“`

Here’s what the above code is doing:
1. We’re using the `.on` method to add an event listener to our `circle` element.
2. We’re using the `.transition` method to transition the `r` and `fill` attributes of our `circle` element.
3. We’re using the `.duration` method to set the duration of our transition.
4. We’re using the `.attr` method to set the `r` and `fill` attributes of our `circle` element.

Next, let’s add a `mouseout` event listener to our `circle` element.

“`js
circle.on(“mouseout”, function (d, i) {
d3.select(this).transition()
.duration(500)
.attr(“r”, 10)
.attr(“fill”, “black”);
})
“`

Here’s what the above code is doing:
1. We’re using the `.on` method to add an event listener to our `circle` element.
2. We’re using the `.transition` method to transition the `r` and `fill` attributes of our `circle` element.
3. We’re using the `.duration` method to set the duration of our transition.
4. We’re using the `.attr` method to set the `r` and `fill` attributes of our `circle` element.

Finally, let’s add a `click` event listener to our `circle` element.

“`js
circle.on(“click”, function (d, i) {
d3.select(this).transition()
.duration(500)
.attr(“cx”, Math.random() * 700)
.attr(“cy”, Math.random() * 400);
})
“`

Here’s what the above code is doing:
1. We’re using the `.on`

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