我在petercollingridge.co.uk上找到了一些有趣的代碼來拖動SVG。我試圖讓我可以找到可拖動SVG的代碼
一段時間的努力得到它在我的項目工作後,我決定只是試圖讓彼得的代碼在一個fiddle.
<svg xmlns:svg="http://www.w3.org/2000/svg" xmlns="http://www.w3.org/2000/svg" version="1.1" width="400" height="200">
<style>
.draggable {
cursor: move;
}
</style>
<script type="text/ecmascript">
< ![CDATA[
var selectedElement = 0;
var currentX = 0;
var currentY = 0;
var currentMatrix = 0;
function selectElement(evt) {
selectedElement = evt.target;
currentX = evt.clientX;
currentY = evt.clientY;
currentMatrix = selectedElement.getAttributeNS(null, "transform").slice(7, -1).split(' ');
for (var i = 0; i < currentMatrix.length; i++) {
currentMatrix[i] = parseFloat(currentMatrix[i]);
}
selectedElement.setAttributeNS(null, "onmousemove", "moveElement(evt)");
selectedElement.setAttributeNS(null, "onmouseout", "deselectElement(evt)");
selectedElement.setAttributeNS(null, "onmouseup", "deselectElement(evt)");
}
function moveElement(evt) {
var dx = evt.clientX - currentX;
var dy = evt.clientY - currentY;
currentMatrix[4] += dx;
currentMatrix[5] += dy;
selectedElement.setAttributeNS(null, "transform", "matrix(" + currentMatrix.join(' ') + ")");
currentX = evt.clientX;
currentY = evt.clientY;
}
function deselectElement(evt) {
if (selectedElement != 0) {
selectedElement.removeAttributeNS(null, "onmousemove");
selectedElement.removeAttributeNS(null, "onmouseout");
selectedElement.removeAttributeNS(null, "onmouseup");
selectedElement = 0;
}
}
]] >
</script>
<rect x="0.5" y="0.5" width="399" height="199" fill="none" stroke="black" />
<rect class="draggable" x="30" y="30" width="80" height="80" fill="blue" transform="matrix(1 0 0 1 25 20)" onmousedown="selectElement(evt)" />
<rect class="draggable" x="160" y="50" width="50" height="50" fill="green" transform="matrix(1 0 0 1 103 -25)" onmousedown="selectElement(evt)" />
</svg>
我仍然得到運行錯誤我在我的項目中,那些是:
" Uncaught SyntaxError: Unexpected token <" and "Uncaught ReferenceError: selectElement is not defined "
我讀了一些關於看不見的字符導致第一個概率如果你複製/粘貼代碼,但我還沒有找到任何。
感謝您提供任何幫助。
擺脫'<![CDATA ['和']!>'的。那些不再需要。 –