答案 0 :(得分:0)
如果SVG图像的元素直接嵌入到HTML代码中,则可以访问它们。您甚至可以使用JavaScript创建整个SVG。这是一个例子: https://jsfiddle.net/da_mkay/eyskzpsc/7/
<!DOCTYPE html>
<html>
<head>
<title>SVG dots</title>
</head>
<body>
</body>
<script>
var makeSVGElement = function (tag, attrs) {
var element = document.createElementNS('http://www.w3.org/2000/svg', tag)
for (var k in attrs) {
element.setAttribute(k, attrs[k])
}
return element
}
var makeDotSVG = function (width, height, dotRadius) {
var svg = makeSVGElement('svg', { width: width, height: height, 'class': 'dot-svg' })
, dotDiameter = dotRadius*2
, dotsX = Math.floor(width / dotDiameter)
, dotsY = Math.floor(height / dotDiameter)
// Fill complete SVG canvas with dots
for (var x = 0; x < dotsX; x++) {
for (var y = 0; y < dotsY; y++) {
var dot = makeSVGElement('circle', {
id: 'dot-'+x+'-'+y,
cx: dotRadius + x*dotDiameter,
cy: dotRadius + y*dotDiameter,
r: dotRadius,
fill: '#B3E3A3'
})
svg.appendChild(dot)
}
}
// Highlight the hovered dots by changing its fill-color
var curMouseOver = function (event) {
var dotX = Math.floor(event.offsetX / dotDiameter)
, dotY = Math.floor(event.offsetY / dotDiameter)
, dot = svg.getElementById('dot-'+dotX+'-'+dotY)
if (dot !== null) {
dot.setAttribute('fill', '#73B85C')
}
}
svg.addEventListener('mouseover', curMouseOver)
return svg
}
// Create SVG and add to body
var myDotSVG = makeDotSVG(500, 500, 5)
console.log(document.body)
document.body.appendChild(myDotSVG)
</script>
</html>