Question

js函数window.open()的问题

<button type="button" onclick="openwindow()" value="${book.id }" >修改</button>
<SCRIPT type="text/javascript">
function openwindow() {
var url="SearchoneBookServlet?id=";
window.open(url,"newwindow","height=400,width=400,top=100,left=40%,toolbar=no,menubar=no,scrollbars=no, resizable=no,location=no, status=no,alwaysRaised=yes")
}
</SCRIPT>
如代码，怎么把EL表达式取的book.id 传到 函数中在URL地址"id="后面

Answer 1

给<button type="button" onclick="openwindow()" value="${book.id }" >修改</button>设置一个ID，比如
<button id="mybtn" type="button" onclick="openwindow()" value="${book.id }" >修改</button>
然后
var url="SearchoneBookServlet?id=" + document.getElementById("mybtn").value;

Answer 2

<button type="button" onclick="openwindow('${book.id}')" value="${book.id }" >修改</button><SCRIPT type="text/javascript">function openwindowstr(str) {var url="SearchoneBookServlet?id="+str;window.open(url,"newwindow","height=400,width=400,top=100,left=40%,toolbar=no,menubar=no,scrollbars=no, resizable=no,location=no, status=no,alwaysRaised=yes")}</SCRIPT>

Answer 3

直接用后台公共变量<%=book.id%>