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---
title: stroke-dashoffset
slug: Web/SVG/Attribute/stroke-dashoffset
translation_of: Web/SVG/Attribute/stroke-dashoffset
---
<div>{{SVGRef}}</div>
<p><strong><code>stroke-dashoffset</code></strong>属性は、関連する破線をレンダリングするうえで、オフセットを定義するプレゼンテーション属性です。</p>
<p class="note"><strong>Note:</strong> プレゼンテーション属性として、<strong><code>stroke-dashoffset</code></strong>はCSSプロパティとして使用することができます。</p>
<p>プレゼンテーション属性として、それは、いくつかの要素に適用させることができますが、次の12個の要素にのみ効果があります。</p>
<p> {{SVGElement('altGlyph')}}, {{SVGElement('circle')}}, {{SVGElement('ellipse')}}, {{SVGElement('path')}}, {{SVGElement('line')}}, {{SVGElement('polygon')}}, {{SVGElement('polyline')}}, {{SVGElement('rect')}}, {{SVGElement('text')}}, {{SVGElement('textPath')}}, {{SVGElement('tref')}}, and {{SVGElement('tspan')}}</p>
<div id="topExample">
<div class="hidden">
<pre class="brush: css notranslate">html,body,svg { height:100% }</pre>
</div>
<pre class="brush: html notranslate"><svg viewBox="-3 0 33 10" xmlns="http://www.w3.org/2000/svg">
<!-- No dash array -->
<line x1="0" y1="1" x2="30" y2="1" stroke="black" />
<!-- No dash offset -->
<line x1="0" y1="3" x2="30" y2="3" stroke="black"
stroke-dasharray="3 1" />
<!--
The start of the dash array computation
is pulled by 3 user units
-->
<line x1="0" y1="5" x2="30" y2="5" stroke="black"
stroke-dasharray="3 1"
stroke-dashoffset="3" />
<!--
The start of the dash array computation
is pushed by 3 user units
-->
<line x1="0" y1="7" x2="30" y2="7" stroke="black"
stroke-dasharray="3 1"
stroke-dashoffset="-3" />
<!--
The start of the dash array computation
is pulled by 1 user units which ends up
in the same rendering as the previous example
-->
<line x1="0" y1="9" x2="30" y2="9" stroke="black"
stroke-dasharray="3 1"
stroke-dashoffset="1" />
<!--
the following red lines highlight the
offset of the dash array for each line
-->
<path d="M0,5 h-3 M0,7 h3 M0,9 h-1" stroke="rgba(255,0,0,.5)" />
</svg>
</pre>
<p>{{EmbedLiveSample('topExample', '100%', 200)}}</p>
</div>
<h2 id="Usage_notes">Usage notes</h2>
<table class="standard-table">
<tbody>
<tr>
<th scope="row">Value</th>
<td><strong><a href="/en/SVG/Content_type#Percentage" title="en/SVG/Content_type#Percentage"><percentage></a></strong> | <strong><a href="/en/SVG/Content_type#Length" title="en/SVG/Content_type#Length"><span><length></span></a></strong></td>
</tr>
<tr>
<th scope="row">Default value</th>
<td><code>0</code></td>
</tr>
<tr>
<th scope="row">Animatable</th>
<td>Yes</td>
</tr>
</tbody>
</table>
<p>The offset is usually expressed in user units resolved against the {{SVGAttr('pathLength')}} but if a <a href="/en/SVG/Content_type#Percentage" title="en/SVG/Content_type#Percentage"><percentage></a> is used, the value is resolved as a percentage of the current viewport.</p>
<h2 id="Browser_Compatibility" name="Browser_Compatibility">Browser compatibility</h2>
<p>{{Compat("svg.attributes.presentation.stroke-dashoffset")}}</p>
<h2 id="Specification">Specification</h2>
<table class="standard-table">
<thead>
<tr>
<th scope="col">Specification</th>
<th scope="col">Status</th>
<th scope="col">Comment</th>
</tr>
</thead>
<tbody>
<tr>
<td>{{SpecName("SVG2", "painting.html#StrokeDashoffsetProperty", "stroke-dashoffset")}}</td>
<td>{{Spec2("SVG2")}}</td>
<td>Definition for shapes and texts</td>
</tr>
<tr>
<td>{{SpecName("SVG1.1", "painting.html#StrokeDashoffsetProperty", "stroke-dashoffset")}}</td>
<td>{{Spec2("SVG1.1")}}</td>
<td>Initial definition for shapes and texts</td>
</tr>
</tbody>
</table>
|
