无论如何在浏览器中在
HTML中运行SVG时,是否将textInput或keypress(或实际上任何其他文本输入)事件附加到SVG元素？
我可以将一个eventhandler附加到document.documentElement但是当我通过任何机制将一个eventhandler附加到anykind的SVGElement时没有任何反应… svg,g,rect …
我从SVG规范中看到这不支持(W3 SVG list of events),但是任何浏览器都支持任何“额外”吗？
我无法让以下内容在Chrome或Firefox上运行…
<!DOCTYPE HTML>
<html>
<head>
<title>Key event test</title>
<style type="text/css">
body,html {
margin: 0;
padding: 0;
height: 100%;
width: 100%;
background: #f00;
}
#main {
margin: 0;
padding: 0;
height: 100%;
width: 80%;
background: #0f0;
float: right;
}
#drawArea {
margin: 0;
padding: 0;
height: 100%;
width: 100%;
background: #ffffff;
}
#side {
margin: 0;
padding: 0;
height: 100%;
width: 20%;
background: #00f;
float: left;
}
</style>
<script type="text/javascript">
function createBoundEventHandler(el,name) {
var f =
function eventHandler(ev) {
if("mousedown" === ev.type) {
el.focus();
}
else {
alert("asEventHandler: " + el.localName + " " + name + " " + ev.type);
}
return true;
};
return f;
}
function doEvent(event,elementName,eventName) {
alert("asAttribute: " + elementName + " " + eventName + " " + event.type);
return true;
}
function addEventHandler(element,eventName,type) {
var attrName = "on" + eventName;
var attrValue = "doEvent(evt,'" + element.localName + "','" + eventName + "')";
if("asAttribute" === type) {
element.setAttribute( attrName,attrValue);
}
else {
element.addEventListener(eventName,createBoundEventHandler(element,eventName),false);
}
}
window.onload = function() {
var eventHandlerType = "asEventHandler"; //asAttribute asEventHandler
var svgTarget = document.getElementById('drawArea');
var svgRect = document.getElementById('aRect');
var nonSVG = document.getElementById('side');
addEventHandler(svgTarget,"keypress",eventHandlerType);
addEventHandler(svgTarget,"mousedown","keyup","keydown",eventHandlerType);
addEventHandler(svgRect,eventHandlerType);
addEventHandler(svgRect,eventHandlerType);
addEventHandler(nonSVG,eventHandlerType);
addEventHandler(nonSVG,eventHandlerType);
//We can get a keypress if we attach an event handler to the underlying document Element
addEventHandler(document.documentElement,eventHandlerType);
}
</script>
</head>
<body>
<div id="side" tabindex="0">
</div>
<div id="main">
<svg version="1.1" xmlns="http://www.w3.org/2000/svg" id="drawArea" focusable="true" tabindex="0">
<rect x="0" y="0" width="100" height="100"
style="fill:yellow; ;stroke-width:2; stroke:rgb(0,0)" id="aRect" focusable="true"/>
</svg>
</div>
</body>
</html>
如示例所示,我仍然可以回退’background’doc元素上的关键事件.有没有人有任何宠物图书馆,将这种技术与SVGElement相关联的技术.
注：我也试过tabindex(0)并且没有效果……
谢谢…
解决方法
一个简单的答案可能是这些浏览器不支持
‘focusable’属性.对于关键事件监听器,例如< rect>无论如何,需要在svg中有一个焦点的概念.