How to create a parallelogram in javascript

JavaScript is a very powerful programming language that can implement a variety of operations. Among them, creating parallelograms is a relatively common requirement, because parallelograms can present unique visual effects and add some beautiful decorations to web pages. This article will introduce how to use JavaScript to create parallelograms.

The prerequisite for making a parallelogram is a rectangle. We can create a rectangle using HTML and CSS as follows:

<div id="rectangle"></div>

#rectangle {
    width: 200px;
    height: 100px;
    background-color: #ccc;
}

This creates a rectangle with a width of 200 pixels, a height of 100 pixels, and a background color of gray.

Now, we need to turn this rectangle into a parallelogram. There are many ways to achieve this goal, two of the more common methods are introduced below.

1. Use the transform attribute

The transform attribute can implement operations such as rotation, scaling, and displacement of elements. We can use transform: skewX(deg); to tilt the rectangle to the right, where deg represents the tilt angle. To turn a rectangle into a parallelogram, you need to tilt its opposite sides up or down at the same angle, as shown below:

#rectangle {
    width: 200px;
    height: 100px;
    background-color: #ccc;
    transform: skewX(30deg);
}

This turns the rectangle into an upward-right parallelogram. If you want a downward-sloping parallelogram, you can change deg to a negative value. It should be noted that since the width of the rectangle is changed, it may cause layout problems.

2. Use the CSS clip-path attribute

The clip-path attribute can control the clipping area of ​​the element and achieve cutting of the element shape. We can use clip-path: polygon(x1 y1, x2 y2, x3 y3, x4 y4); to turn the rectangle into a parallelogram. Among them, x1 y1, x2 y2, x3 y3, x4 y4 represent the four vertex coordinates of the parallelogram. The calculation method of specific coordinate values ​​can be searched by yourself.

#rectangle {
    width: 200px;
    height: 100px;
    background-color: #ccc;
    clip-path: polygon(0 0, 200px 30px, 200px 100px, 0 70px);
}

This turns the rectangle into a parallelogram with an upper-right slope. It should be noted that since the clip-path attribute is not supported by all browsers, compatibility issues may occur on some browsers.

Summary

It is not very difficult to create a parallelogram using JavaScript. We can use the CSS transform attribute or clip-path attribute to choose according to our needs. Of course, different methods have their own advantages and disadvantages, and you need to choose according to the actual situation. I hope this article can be helpful to everyone, thank you for reading!

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