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javascriptiframeparameterssrc

js make all the url parameter's value have an " "

I have an iframe which includes src like this:

<iframe id="frame1" src="/jsp/transfer/a.jsp?isChange=true&bizId="+bizId></iframe>

bizId is a number. For example:

src = "/jsp/transfer/a.jsp?isChange=true&bizId=10"

I notice that Javascript will make put bizId's value in quotes: "10", "null", etc. I want to get the actual numeric value, not a string. Why is it represented as a string? What should I do?

Solution

  • If I understood your problem right (especially your last comment), you need to do this:

    <iframe id="frame1" src="/jsp/transfer/a.jsp?isChange=true&bizId=<%=bizId>"></iframe>

    Explanation:

    <%= variable > - is a JSP syntax for inserting variables from JSP context into rendered HTML. This code (<%= variable >) will be replaced fully by contents of variable.

    Added: (in response to comment)

    If you need to put some variable into JavaScript file which is included from your original JSP file, you wont be able to use <%= variable > syntax in it. However, here is what you can do:

    [yourjsp.jsp]

    <script>
var bizId = <%=bizId>;
</script>
...
<script src="yourjavascript.js"></script>

    [yourjavascript.js]

    function someMethod() {
    alert(bizId); 
}

    Basically, JSP code will be replaced, and you will define a global javascript variable called bizId containing the value of server-side bizId. Then, any other javascript code can use that variable.