Это работает
function callred() {
[...document.getElementById('btn1').querySelectorAll('*')].forEach((e) => {
e.setAttribute('fill', '#ff00ff');
});
}
#svg-object{
height: 100vh;
width: 100%;
background-size: cover;
background-position: center center;
border: 15px antiquewhite;
position: absolute;
}
<?xml version="1.0" encoding="utf-8"?>
<!-- Generator: Adobe Illustrator 16.0.0, SVG Export Plug-In . SVG Version: 6.00 Build 0) -->
<!DOCTYPE svg PUBLIC "-//W3C//DTD SVG 1.1//EN" "http://www.w3.org/Graphics/SVG/1.1/DTD/svg11.dtd">
<svg id="svg-object" version="1.1" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" x="0px" y="0px"
width="800px" height="754px" viewBox="0 0 800 754" enable-background="new 0 0 800 754" xml:space="preserve">
<g id="btn1" onclick="callred()">
<polygon fill="#FF0013" points="366.699,131 410,56 453.301,131 "/>
<polygon fill="#07FF00" points="323.699,656 367,581 410.301,656 "/>
<polygon fill="#0000FF" points="409.699,656 453,581 496.301,656 "/>
<polygon points="366.699,581 410,656 453.301,581 "/>
</g>
</svg>
не уверен, что это хороший ответ
Вы также можете использовать CSS
function callred() {
document.getElementById('btn1').classList.toggle("forcecolor");
}
.forcecolor * {
fill: blue;
}
#svg-object{
height: 100vh;
width: 100%;
background-size: cover;
background-position: center center;
border: 15px antiquewhite;
position: absolute;
}
<?xml version="1.0" encoding="utf-8"?>
<!-- Generator: Adobe Illustrator 16.0.0, SVG Export Plug-In . SVG Version: 6.00 Build 0) -->
<!DOCTYPE svg PUBLIC "-//W3C//DTD SVG 1.1//EN" "http://www.w3.org/Graphics/SVG/1.1/DTD/svg11.dtd">
<svg id="svg-object" version="1.1" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" x="0px" y="0px"
width="800px" height="754px" viewBox="0 0 800 754" enable-background="new 0 0 800 754" xml:space="preserve">
<g id="btn1" onclick="callred()">
<polygon fill="#FF0013" points="366.699,131 410,56 453.301,131 "/>
<polygon fill="#07FF00" points="323.699,656 367,581 410.301,656 "/>
<polygon fill="#0000FF" points="409.699,656 453,581 496.301,656 "/>
<polygon points="366.699,581 410,656 453.301,581 "/>
</g>
</svg>