在JavaScript中访问Perl数组 [英] Accessing Perl Array in JavaScript

问题描述

我在其他Perl模块生成的Perl中有一个未知大小的数组.现在，恰好我想确定传递给jquery函数的值是否在perl数组中存在.

I have an array of unknown size in perl generated by some other perl module. Now, precisely I want to find if a value passed to a jquery function exists in the perl array or not.

有没有一种方法可以对输入值与perl数组中的每个值进行逐元素比较?

Is there a way I can do an element by element comparison of the input value against each value in perl array?

我环顾四周，看起来我可以通过提供索引来访问jquery中的perl数组，但是我们不知道数组的大小.所以我不知道什么时候停止.

I looked around and looks like I can access perl array in jquery by providing the index but we don't know the size of the array. So I don't know when to stop.

我的梅森代码看起来类似于:

My mason code looks something similar to:

<%perl>
    my @testArray = [call to some other perl module to get the values]
</%perl>

<script type="text/javascript">
    function checkIfValExistsInTestArray(val) {
        // Code to test if "val" exists in "@testArray". Returns boolean true/false.
    }
</script>

推荐答案

要检查是否存在，您需要一个散列.传输数据的一种简单方法是使用 JSON 进行编码.

To check for existence, you'd want a hash. A simple way of transmitting the data would be to encode it using JSON.

% use JSON qw( );

<script type="text/javascript">

var testArray = <% JSON->new()->encode({ map { $_ => 1 } get_values() }) %>;

function checkIfValExistsInTestArray(val) {
   return testArray[val];
}

</script>

例如，如果get_values()返回apple和orange，您将得到

For example, if get_values() returned apple and orange, you'd get

<script type="text/javascript">

var testArray = {"apple":1,"orange":1};

function checkIfValExistsInTestArray(val) {
   return testArray[val];
}

</script>

我不认识梅森，所以可能会有错误，但是您明白了.

I don't know Mason, so there could be errors, but you get the idea.

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