<img />
<script type="text/javascript">
var url = "xxx.jpg";
document.getElementById("pic").src = url;
</script>
'<img src="'+url+'" />'
<img />
<script type="text/javascript">
var url = "xxx.jpg";
document.getElementById("pic").src = url;
</script>
'<img src="'+url+'" />'
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