我正面临这个问题..我可以知道，我怎样才能将图像放入这个元素标签中，
<div id="item1"></div>
下面这段代码的目的是，当用户点击“+”时，图像就会出现。并且当用户点击“播放”按钮时，出现的图像应该像上面提到的那样放入标签中。
不幸的是，我无法将刚刚出现的图像放入标签中。
我知道有硬编码方法，但对不起，我不是在寻找这种方法..
<!DOCTYPE html>
<html>
<head>
<script src="code.jquery.com/jquery-1.7.2.js"></script>
<script src="http://code.jquery.com/jquery-latest.js"></script>
<style>
.myClass {
width: 40px; height: 40px; float:left;
padding: 1px; margin:3px; position:absolute;
left:50px; top:60px; background:blue; color:white;
}
</style>
</head>
<body bgcolor="green";>
<div id="item1" class="myClass">F1</div>
<div id="item2" class="myClass">F2</div>
<div id="item3" class="myClass">F3</div>
<script>
var predator;
var Predatorlist = [];
function addvalue()
{
Predatorlist.push(uniqueid)
alert(Predatorlist);
}
function removevalue()
{
Predatorlist.pop(uniqueid)
alert(x.innerHTML=Predatorlist);
}
//************** End of Array ***********************
function Add() {
var id = Math.floor(Math.random()*101+1);
x = Math.random() * 550;
y = Math.random() * 250;
if (document.getElementById('amount').value < 50){
document.getElementById('amount').value++;
svg = document.getElementById("main");
var id = 'predator';
uniqueid = "frog" + document.getElementById('amount').value;
//namespaces for SVG
svgNS="http://www.w3.org/2000/svg";
xlinkNS="http://www.w3.org/1999/xlink";
// create a image element
image = document.createElementNS(svgNS, 'image');
// set id and other attributes
image.setAttributeNS(null, "id", uniqueid);
image.setAttributeNS(xlinkNS, "href","jef-frog.gif");
image.setAttributeNS(null, "x", x);
image.setAttributeNS(null, "y", y);
image.setAttributeNS(null, "width", "50");
image.setAttributeNS(null, "height", "50");
// append to svg
svg.appendChild(image);
} else {
alert("we got 50");
}
}
function Remove() {
if(document.getElementById('amount').value > 0)
{
document.getElementById('amount').value--;
svg = document.getElementById("main");
svg.removeChild(svg.lastChild);
}
}
function numinput(e){
// get the input value if enter
key=e.keyCode || e.which;
if (key==13){
total = document.getElementById("amount").value;
dummy = total;
// clear svg with image to avoid clearing the canvas
svg = document.getElementById("main");
element = svg.getElementsByTagName("image");
while(element.length>0){
element = svg.getElementsByTagName("image");
element[0].parentNode.removeChild(element[0]);
}
// use the input to create the number of frog.
while (dummy>0)
{
Add();
dummy--;
}
document.getElementById("amount").value = total;
}
}
function randomRange(min,max) {
return Math.random() * (max-min) + min;
}
/* Generate some random starting position */
var startItem1X = randomRange(50,100);
var startItem1Y = randomRange(50,100);
var startItem2X = randomRange(50,100);
var startItem2Y = randomRange(50,100);
var startItem3X = randomRange(50,100);
var startItem3Y = randomRange(50,100);
var startmyClassX = randomRange(50,100);
var startmyClassY = randomRange(50,100);
var item1 = $("#item1"),cycle1;
var item2 = $("#item2"),cycle1;
var item3 = $("#item3"),cycle1;
function runItem1() {
/* Set a the starting position to be random by editing the css */
$("#item1").css("left", startItem1X+"px");
$("#item1").css("top", startItem1Y+"px");
/* Cycle1 and Cycle2 variables allow infinite loop */
(cycle1 = function() {
var m = randomRange(50,100);
var n = randomRange(75,150);
item1.appendChild(image)
item1.animate({left:'+='+n},2000);
item1.animate({left:'+='+m, top:'+='+m}, 2000)
item1.animate({left:'-='+m, top:'+='+m}, 2000)
item1.animate({left:'-='+n},2000);
item1.animate({top:'-='+n},2000,cycle1)
})();
}
function runItem2() {
$("#item2").css("left", startItem2X+"px");
$("#item2").css("top", startItem2Y+"px");
(cycle2 = function() {
var m = randomRange(50,100);
var n = randomRange(75,150);
item2.animate({top:'+='+m, left:'+='+n},2000);
item2.animate({left:'-='+n},2000);
item2.animate({left:'+='+n, top:'-='+n},2000);
item2.animate({left:'-='+n},2000)
item2.animate({top:'+='+m},2000,cycle2)
})();
}
runItem1();
runItem2();
</script>
<SVG xmlns="http://www.w3.org/2000/svg"
xmlns:xlink="http://www.w3.org/1999/xlink" id="main" style="border:inset 1px #000000;width:600;height:300"><param name='wmode' value='transparent'/></SVG>
<img src="jef-frog.gif" alt="frogsonice.com" width="100" height="100"/><BR/>
<INPUT type="button" value="+" onClick="Add(); addvalue();">
<INPUT type="text" id="amount" value=0 maxlength="3" size="1" onkeypress="numinput(evt)">
<INPUT type="button" value="-" onClick="Remove(); removevalue();">
<INPUT type="button" value="Play" onClick="runItem1(); runItem2();">
</body>
</html>
非常感谢那里的任何人，花时间阅读并尝试提供帮助..再次感谢..