如何使用javascript在svg组中插入svg use元素？ [英] How do I use javascript to insert an svg use element into an svg group?

问题描述

我有一个svg文件，其中包含一个具有单个线元素的组。我可以使用use元素，并在任何位置，我想要他们几个参考副本。但是，我想使用javascript来动态添加和删除使用元素。有没有办法使用javascript来插入一个svg使用元素的行我的组？

 < svg version = 1.1id =ex1-3rds-quarter-sxmlns =http://www.w3.org/2000/svgxmlns：xlink =http://www.w3.org/1999/xlinkx =0px
y =0pxwidth =323.333pxheight =55.333pxviewBox =0 0 323.333 55.333enable-background =new 0 0 323.333 55.333
 xml：space =preserve> 
< g id =ledgerlines> 
< line id =MidCLine1fill =nonestroke =＃000000stroke-width =0.75stroke-miterlimit =10x1 =48.09y1 =41.694x2 = 57.924y2 =41.694/> 
< / g> 
< / svg> 
 
 
 
 h2_lin>解决方案

  var svgns =http://www.w3.org/2000/svg; 
 var xlinkns =http://www.w3.org/1999/xlink; 
 
 //获取对< g> element 
 var g = document.getElementById（ledgerlines）; 
 
 //创建< use>元素
 var use = document.createElementNS（svgns，use）; 
 //添加'href'属性（使用xlink命名空间）
 use.setAttributeNS（xlinkns，href，＃MidCLine1）; 
 //将行向下偏移10 
 use.setAttribute（y，10）; // offset = y + 10 
 
 //添加< use>到< g> 
 g.appendChild（use）; 
  

演示< a>

I have an svg file containing a group with a single line element. I can make use of the use element and make several reference copies in any position I want them. However, I am wanting to use javascript to add and remove the use element dynamically. Is there a way to use javascript to insert an svg use element of my line into my group?

<svg version="1.1" id="ex1-3rds-quarter-s" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" x="0px"
 y="0px" width="323.333px" height="55.333px" viewBox="0 0 323.333 55.333" enable-background="new 0 0 323.333 55.333"
 xml:space="preserve">
<g id="ledgerlines">
  <line id="MidCLine1" fill="none" stroke="#000000" stroke-width="0.75" stroke-miterlimit="10" x1="48.09" y1="41.694" x2="57.924" y2="41.694"/>
</g>
</svg>

Thanks, --christopher

解决方案

var  svgns = "http://www.w3.org/2000/svg";
var  xlinkns = "http://www.w3.org/1999/xlink";

// Get a reference to the <g> element    
var  g = document.getElementById("ledgerlines");

// Create a <use> element
var  use = document.createElementNS(svgns, "use");
// Add an 'href' attribute (using the "xlink" namespace)
use.setAttributeNS(xlinkns, "href", "#MidCLine1");
// Offset the line down by 10
use.setAttribute("y", "10");  // offset = y+10

// Add the <use> to the <g>
g.appendChild(use);

Demo here

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