javascript 将jstl值传递给javascript
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passing jstl value to javascript
提问by Srinivas
Hi I've the following code in jsp. I am trying to pass the value to javascript as follows. But it is not working.The code is as follows:
嗨，我在jsp中有以下代码。我正在尝试将值传递给 javascript，如下所示。但是不行，代码如下：
<td><button name = "btn" onclick="callMe(<c:out value='${bus.vehicleId}'/>")>Show Details</button></td>
(Vehicle id is printing if I use in my jsp.) Javascript is like this.
（如果我在我的 jsp 中使用，车辆 id 正在打印。）Javascript 是这样的。
function callMe(myId) {
alert(myId);}
Here I am getting value as "undefined". I've tried in different way as follows
在这里，我获得了“未定义”的价值。我以不同的方式尝试如下
<td><button name = "btn" onclick="callMe('${bus.vehicleId}')>Show tails</button></td>
This is also not working.Please help me asap.
这也不起作用。请尽快帮助我。
回答by Pokuri
Your vehicleID might be string. If so, Yes! you get always undefined as a result. What ever the values coming as a result of <c:out value='${bus.vehicleId}'/>will be treated as a variable in html and javascript trying to print that variable value, which is undefined.
您的车辆 ID 可能是字符串。如果是这样，是的！结果总是未定义。作为结果的任何值都<c:out value='${bus.vehicleId}'/>将被视为 html 和 javascript 中的变量，试图打印该变量值，即undefined.
Try this way to let java script treat that jstl value as string literal
尝试这种方式让java脚本将该jstl值视为字符串文字
onclick="callMe('${bus.vehicleId}')">
Find single colon and double colons positions!
找到单冒号和双冒号的位置！
回答by user1597490
<tr class="txtnbmed">
<td align="center"><c:out value="${conPartRef.opCode}" /></td>
<td align="center"><html:select property="approvalStatus" indexed="true" name="conPartRef">
<option value="" <c:if test="${conPartRef.approvalStatus==''}">selected</c:if>>--- SELECT ---
<option value="A" <c:if test="${conPartRef.approvalStatus=='A'}">selected</c:if> >Approved
<option value="R" <c:if test="${conPartRef.approvalStatus=='R'}">selected</c:if> >Rejected
</option>
</html:select>
</td>
</c:forEach>
<input type="button" class="txtMF" value="Confirm & Print Supplement RO" onclick="doMarkAsOFP(this.form)">
function doMarkAsOFP(form) {
// need to get approvalStatus values and the opCode values.
submitPage();
}
