Hidding SVG affects other SVG styles in the same page

Question

An SVG is loaded several times in the same page. The SVG is used to show a graphic representation of values. Think of a map where every region shows a given value using a color code.

In each SVG, for every region a CSS class is dynamically applied to match the desired SVG pattern fill used.

CSS styles and patterns are defined in the SVG file. Here is an example:

  <svg height="100" width="100">
    <style>
    /*  */
    .striped-pain-1 {fill: url(#striped-pain-1);}
    /*  */
    </style>
    <defs>
        <pattern id="striped-pain-1" width="4" height="1" patternTransform="rotate(45 0 0)" patternUnits="userSpaceOnUse">
            <line x1="0" y1="0" x2="0" y2="2" style="stroke:#EABFD5; stroke-width:6"></line>
        </pattern>
    </defs>

The problem is when on of the SVGs is hidden (via display:none for example) all SVGs from there to the bottom of the page loose the pattern fill.

I have made a simplified Plunker showing the problem.

https://plnkr.co/edit/F5TzOwDEzneHEW7PT3Ls?p=preview

The only way I have found to prevent this is using different pattern ids for every SVG, but since all share the same file I don't like the solution to duplicate all of them and rename the ids just for this. I wonder there should be a better solution.

enxaneta · Accepted Answer

I would put the patterns in a different svg element: <svg class="defs">. This svg element may have position:absolute and a very small width and height. If you add left: -200px; this svg element is invisible.

Also: if one SVG element has this css rule: .striped-pain-1 {fill: url(#striped-pain-1);} you don't need to add it to the second one. In fact you can delete the <style> element from the svg and add this rule to the css.

Please try it: click the numbers (1,2,3) to hide or unhide the svg elements.

let spans = Array.from(document.querySelectorAll("#commands span"))
let svgs = Array.from(document.querySelectorAll(".svgcontainer"))
spans.forEach((s,i) =>{
let n = 0;
s.addEventListener("click",(e)=>{
n++;
let thisSvg = svgs[i].querySelector("svg")
if(n%2 == 1){thisSvg.style.display="none";
            }else{
             thisSvg.style.display="block";}
})
})

svg {
  display:block;
}
.defs {
  position: absolute;
  left: -200px;
}
span {
  display: inline-block;
  width: 2em;
  height: 1em;
  border: 1px solid;
  text-align: center;
  cursor: pointer;
}
.svgcontainer {
  height: 100px;
  width: 100px;
  border: 1px solid;
  display: inline-block;
}

<p id="commands"><span>1</span> <span>2</span> <span>3</span></p>

<svg class="defs" width="1" height="1">
  <defs>
  		<pattern id="striped-pain-1" width="4" height="1" patternTransform="rotate(45 0 0)" patternUnits="userSpaceOnUse">
  			<line x1="0" y1="0" x2="0" y2="2" style="stroke:#EABFD5; stroke-width:6"></line>
  		</pattern>
    
      <pattern id="striped-pain-2" width="4" height="1" patternTransform="rotate(45 0 0)" patternUnits="userSpaceOnUse">
    		<line x1="0" y1="0" x2="0" y2="2" style="stroke:#EABFD5; stroke-width:6"></line>
    	</pattern>
  	</defs>
</svg>

<div class="svgcontainer">
  <svg height="100" width="100">
  	<style>
  		/*  */
  		.striped-pain-1 {fill: url(#striped-pain-1);}
  		/*  */
  	</style>
    
    <circle class="striped-pain-1" cx="50" cy="50" r="40" stroke="black" stroke-width="3" fill="red" />
  </svg> 

</div>
<div class="svgcontainer">
  <svg height="100" width="100">
   <!-- <style>
    		/*  */
    		.striped-pain-1 {fill: url(#striped-pain-1);}
    		/*  */
    </style>-->
    <!--<defs>
    	<pattern id="striped-pain-1" width="4" height="1" patternTransform="rotate(45 0 0)" patternUnits="userSpaceOnUse">
    		<line x1="0" y1="0" x2="0" y2="2" style="stroke:#EABFD5; stroke-width:6"></line>
    	</pattern>
    </defs>-->
    <circle class="striped-pain-1" cx="50" cy="50" r="40" stroke="black" stroke-width="3" fill="red" />
  </svg> 
</div>
<div class="svgcontainer">
  <svg height="100" width="100">
    <style>
    		/*  */
    		.striped-pain-2 {fill: url(#striped-pain-2);}
    		/*  */
    </style>
    <circle class="striped-pain-2" cx="50" cy="50" r="40" stroke="black" stroke-width="3" fill="red" />
  </svg> 
</div>

Kosh · Answer

This problem appears because you've specified the same id for two different elements:

<pattern id="striped-pain-1" on lines 52 and 69.

In HTML id should be unique.

The id attribute specifies a unique id for an HTML element (the value must be unique within the HTML document).

Replacing the duplicated id with the unique one solves the problem. See the snippet below:

<!DOCTYPE html>
<html>

  <head>
    <meta charset="utf-8" />
    <title>AngularJS Plunker</title>
    <script>document.write('<base href="' + document.location + '" />');</script>
    <link rel="stylesheet" href="style.css" />
    <script data-require="angular.js@1.5.x" src="https://cdnjs.cloudflare.com/ajax/libs/angular.js/1.5.11/angular.min.js" data-semver="1.5.11"></script>
    <script src="app.js"></script>
    <script>
      function show(id) {
        document.getElementById('circle-' + id).style.display = 'block';
      }
      function hide(id) {
        document.getElementById('circle-' + id).style.display = 'none';
      }
      function reset() {
        document.getElementById('circle-1').style.display = 'block';
        document.getElementById('circle-2').style.display = 'block';
      }
    </script>
  </head>

<body ng-controller="MainCtrl">
    
<div style="padding:10px">
  <input type='button' onclick="hide(1)" value="Step 1: Click here to hide first circle. Second will loose style." /> 
</div>

<div style="padding:10px">
  <input type='button' onclick="show(1)" value="Step 2: Click here to show first circle. Second will gain style." /> 
</div>

<div style="padding:10px">
  <input type='button' onclick="hide(2)" value="Step 3: Click here to hide second circle. First is not affected." /> 
</div>

<div style="padding:10px">
  <input type='button' onclick="reset()" value="Step 4: Reset." /> 
</div>

<div id="circle-1" style="padding:10px;border:solid grey 1px">
  Circle 1
  <svg height="100" width="100">
  	<style>
  		/*  */
  		.striped-pain-1 {fill: url(#striped-pain-1);}
  		/*  */
  	</style>
    <defs>
  		<pattern id="striped-pain-1" width="4" height="1" patternTransform="rotate(45 0 0)" patternUnits="userSpaceOnUse">
  			<line x1="0" y1="0" x2="0" y2="2" style="stroke:#EABFD5; stroke-width:6"></line>
  		</pattern>
  	</defs>
    <circle class="striped-pain-1" cx="50" cy="50" r="40" stroke="black" stroke-width="3" fill="red" />
  </svg> 
</div>

<div id="circle-2" style="padding:10px;border:solid grey 1px">
  Circle 2
  <svg height="100" width="100">
    <style>
    		/*  */
    		.striped-pain-2 {fill: url(#striped-pain-2);}
    		/*  */
    </style>
    <defs>
    	<pattern id="striped-pain-2" width="4" height="1" patternTransform="rotate(45 0 0)" patternUnits="userSpaceOnUse">
    		<line x1="0" y1="0" x2="0" y2="2" style="stroke:#EABFD5; stroke-width:6"></line>
    	</pattern>
    </defs>
    <circle class="striped-pain-2" cx="50" cy="50" r="40" stroke="black" stroke-width="3" fill="red" />
  </svg> 
</div>

<div style="padding:10px;border:solid grey 1px">
  Circle 3
  <svg height="100" width="100">
    <style>
    		/*  */
    		.striped-pain-3 {fill: url(#striped-pain-3);}
    		/*  */
    </style>
    <defs>
    	<pattern id="striped-pain-3" width="4" height="1" patternTransform="rotate(45 0 0)" patternUnits="userSpaceOnUse">
    		<line x1="0" y1="0" x2="0" y2="2" style="stroke:#EABFD5; stroke-width:6"></line>
    	</pattern>
    </defs>
    <circle class="striped-pain-3" cx="50" cy="50" r="40" stroke="black" stroke-width="3" fill="red" />
  </svg> 
</div>

<div style="padding:10px;">
  These circles are SVGs. They have background applied as a pattern. The first two use clases with the same name, but the third not.
  Hidding the first SVG affects the second one, but hidding the second does not affect the first.
</div>


  </body>

</html>

Probably you might want to get rid of SVGs and use simpler way:

function show(id) {
  document.getElementById('circle-' + id).style.display = 'block';
}

function hide(id) {
  document.getElementById('circle-' + id).style.display = 'none';
}

function reset() {
  document.getElementById('circle-1').style.display = 'block';
  document.getElementById('circle-2').style.display = 'block';
}

#circle-1,
#circle-2,
#circle-3 {
  padding: 10px;
  border: solid grey 1px
}

.circle {
  display: inline-block;
  width: 80px;
  height: 80px;
  margin: 10px;
  border: solid 3px #000;
  border-radius: 55%;
  background: linear-gradient(135deg, #fff 20%, pink 21%, pink 50%, #fff 51%, #fff 71%, pink 72%) 0 0 / 8px 8px;
}


}

<div style="padding:10px">
  <input type='button' onclick="hide(1)" value="Step 1: Click here to hide first circle. Second will loose style." />
</div>

<div style="padding:10px">
  <input type='button' onclick="show(1)" value="Step 2: Click here to show first circle. Second will gain style." />
</div>

<div style="padding:10px">
  <input type='button' onclick="hide(2)" value="Step 3: Click here to hide second circle. First is not affected." />
</div>

<div style="padding:10px">
  <input type='button' onclick="reset()" value="Step 4: Reset." />
</div>

<div id="circle-1">Circle 1 <span class="circle"></span></div>
<div id="circle-2">Circle 2 <span class="circle"></span></div>
<div id="circle-3">Circle 3 <span class="circle"></span></div>

Hidding SVG affects other SVG styles in the same page

Tags:

html

css

svg

display

David Casillas

2 Answers

enxaneta

Kosh

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Hidding SVG affects other SVG styles in the same page

Tags:

html

css

svg

display

David Casillas

2 Answers

enxaneta

Kosh

Related questions

Recent Activity

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