如何从 <c:if 块调用 javascript 函数
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How to call a javascript function from a <c:if block
提问by user179516
I want to call a javascript function when flow enters into <c:if>block.
当流进入<c:if>块时，我想调用一个javascript函数。
For example, I have below code:
例如，我有以下代码：
<c:if test="${!empty errorMessage && !(fn:contains(errorMessage, 'generic'))}">
<span> errorError occured<br />
</span>
</c:if>
I need to invoke a JS function only when this <c:if>is true.
只有在这种<c:if>情况下，我才需要调用 JS 函数。
Please suggest how to achieve this.
请建议如何实现这一目标。
回答by Prakash K
You can include the <script>tag within the <c:if>block, something like this:
您可以<script>在<c:if>块中包含标签，如下所示：
<c:if test="${!empty errorMessage && !(fn:contains(errorMessage, 'generic'))}">
<span>
errorError occured<br />
</span>
<script>
alert("Calling my function ...");
myFunction(); // this is a call to your function which must be defined in the <head> section or another JS file.
</script>
</c:if>
Hope this helps.
希望这可以帮助。
