【发布时间】：2019-11-20 04:21:39
【问题描述】：
我有一个 svg 文件。
我希望当我点击电台名称时，电台会保持缩放。
为此，我使用了focus 方法，然后在 CSS 中使用选择器 :focused 应用效果
但这不起作用，什么都没有发生。
ps：你可以忽略forEach循环，理解不是那么重要
let stops = document.querySelector("#stops");
// all the g elements in the stops
let gs = stops.querySelectorAll("g");
// for each g in the gs
gs.forEach(g=>{
// the rectangle in this g element
let thisRect = g.querySelector("rect");
// the circle in this g element
let thisCircle = g.querySelector("circle");
// the coords of the circle's center used for the transform-origin
let x = thisCircle.getAttribute("cx");
let y = thisCircle.getAttribute("cy");
// the bounding box of the group
let bb = g.getBBox();
// set the rect's attributes
thisRect.setAttributeNS(null, "x", bb.x);
thisRect.setAttributeNS(null, "y", bb.y);
thisRect.setAttributeNS(null, "width", bb.width);
thisRect.setAttributeNS(null, "height", bb.height);
// set the value for the transform-origin for this group
g.style.transformOrigin = `${x}px ${y}px`;
})
document.getElementById('g3670').focus()
function showmessage() {
alert("heloo");
}text{
font-family: Lato;
font-size:16px;
}
g * {pointer-events:none;}
g rect{pointer-events:all;}
#stops g{transform: scale(1);cursor: pointer;}
#stops g:hover {
transform: scale(2);
}
#stops g:active {
transform: scale(2)
}<svg id="Calque_1" data-name="Calque 1" xmlns="http://www.w3.org/2000/svg" viewBox="0 0 775.43 469.98">
<defs>
<style>.cls-1{fill:none;stroke-width:5px;}.cls-1,.cls-2{stroke:#a15256;}.cls-2{fill:#fff;}.cls-3{isolation:isolate;font-size:42.79px;font-family:ArialMT, Arial;}</style>
</defs>
<title>line</title>
<path id="path7" class="cls-1" d="M202,67.72,329.33,215.86" transform="translate(-200.1 -66.09)" />
<path id="path8" class="cls-1" d="M329.35,215.87,449,355" transform="translate(-200.1 -66.09)" />
<path id="path9" class="cls-1" d="M449,355c41.53,51.11,96.22,63.08,117.9,69.28" transform="translate(-200.1 -66.09)" />
<path id="path10" class="cls-1" d="M566.86,424.29C655.43,460.48,977.38,391.48,973,536" transform="translate(-200.1 -66.09)" />
<g id="stops">
<g id="g3670">
<rect fill="none"/>
<circle class="cls-2" cx="129.24" cy="149.78" r="13.58" />
<text id="text3668" class="cls-3" transform="translate(145 160)">Station1</text>
</g>
<g id="g3700">
<rect fill="none"/>
<circle class="cls-2" cx="248.91" cy="288.93" r="13.58" />
<text id="text3698" class="cls-3" transform="translate(270 300)">Station2</text>
</g>
<g id="g3750">
<rect fill="none"/>
<circle class="cls-2" cx="366.75" cy="358.2" r="13.58" />
<text id="text3748" class="cls-3" transform="translate(200 400)">Station3</text>
</g>
</g>
</svg>【问题讨论】：
-
您需要为此使用 JavaScript，
:active仅在按住鼠标按钮时应用样式。单击时它不会切换它。
标签： javascript html css dom svg