How to make dotted lines in html

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Release: 2024-04-11 07:35:33
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There are three ways to create dotted lines in HTML: CSS border-style property: Use dashed or dotted values ​​to create dotted lines. SVG elements: Use the stroke-dasharray attribute to create a dashed line, controlling the length and spacing of dashes or dots. Canvas element: Use the setLineDash() method to create dashed lines, providing more flexibility.

How to make dotted lines in html

How to create dotted lines in HTML

Using CSS border-style Properties

This is the most common way to create dashed lines using HTML and CSS. The border-style property accepts the following values ​​to create a dashed line:

  • dashed: Creates a dashed line consisting of dashes.
  • dotted: Creates a dotted line composed of dots.

Example:

<code class="html"><p style="border: 1px dashed black;">虚线段落</p></code>
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Using SVG elements

SVG elements (such as <line> and <path>) can be used to create dashed lines using the stroke-dasharray property. stroke-dasharray Accepts an array of values ​​representing the length and spacing of dashes or dots for a dashed line.

Example:

<code class="html"><svg width="100" height="100">
  <line x1="0" y1="0" x2="100" y2="100" stroke-dasharray="5 10" />
</svg></code>
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Using the Canvas element

The Canvas element uses the JavaScript API to create dashed lines. The getContext() method returns a canvas context object that provides the setLineDash() method.

Example:

<code class="html"><canvas id="canvas" width="100" height="100"></canvas>

<script>
  var canvas = document.getElementById("canvas");
  var ctx = canvas.getContext("2d");

  ctx.setLineDash([5, 10]);
  ctx.beginPath();
  ctx.moveTo(0, 0);
  ctx.lineTo(100, 100);
  ctx.stroke();
</script></code>
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Choose a method

Selecting the most appropriate dash line creation method depends on your specific needs. The CSS border-style property is the simplest method, but the SVG and Canvas elements offer more flexibility.

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