javascript 访问jsp页面的javascript中的表达式语言
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Accessing the expression language in javascript of a jsp page
提问by reddy
I have a "jsp" file. In that file I have "Javascript" scripting.
Within <script>tags,only javascript is allowed but, how is "Expression Language" executed?
我有一个“jsp”文件。在那个文件中，我有“Javascript”脚本。在<script>标签内，只允许使用 javascript 但是，“表达式语言”是如何执行的？
<body>
<script type="text/javascript">
var b=${requestScope.name};
</script>
</body>
采纳答案by seedi
Executed.
执行。
As "Expression Language" is executed on the server side the statement
由于“表达式语言”在服务器端执行，语句
${requestScope.name}
executed at server side and its value is available to JavaScript at client side. now at the client side the line becomes
在服务器端执行，它的值在客户端对 JavaScript 可用。现在在客户端，线路变成
var b='corresponding expression language executed value';
回答by uneakharsh
bring that variable from request scope to page scope,
将该变量从请求范围带到页面范围，
<c:set var="myVar" value="${request.myVar}" />
after this you can try this :
在此之后你可以试试这个：
<script>
var myVar= '${myVar}' ;
</script>
Though I am not sure if it's the best approach; but this should do.
虽然我不确定这是否是最好的方法；但这应该可以。
回答by R. Oosterholt
JSP is server side. You cannot access the script variables. These variables are only executed client-side.
JSP 是服务器端。您无法访问脚本变量。这些变量仅在客户端执行。
