首先要求,a.jsp和b.jsp在同一个页面,不同的帧里,假设a.jsp是parent.frames[0],b.jsp是parent.frames[1]
a.jsp
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<script language="javascript">
var abc abc="1234"
</script>
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b.jsp
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<script language="javascript">
var bcd bcd=window.parent.frmaes[0].abc
</script>
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a.jsp
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<script language="javascript">
var abc abc="1234"
</script>
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b.jsp
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<script language="javascript">
var bcd bcd=window.parent.frmaes[0].abc
</script>
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b.document.formname.txt.value=document.fname.txt1.value
可以选择使用cookie