如何以正确的方式从用Java隐藏的输入类型中获取价值？

Question

I have a code

HTML :

<input type="hidden" name="test[]" id="test_0" value="123456789">

Javascript :

$(".test").each(function(){
   console.log('Test Value : '+ $(this).val());
});

Result :

Test Value =

The question :

Why result of console.log for $(this).val() inside my Javascript code give result empty ? And how to fix it without change the Javascript code?

Thank you

Answer 1

The problem is that $(".test") targets the class test , not the name test. In order to solve that by only changing the HTML, simply give the input the relevant class:

<input type="hidden" name="test[]" class="test" id="test_0" value="123456789">

A working fiddle demonstrates this here .

Hope this helps :)

Answer 2

test class is not defined.

try example,

console.log('Test Value : '+ $('#test_0').val());

Answer 3

You are not targeting the desired element.

Try this:

$("#test_0").each(function(){
   console.log('Test Value : '+ $(this).val());
});

Answer 4

In the HTML, you have to add a class to input

The problem, is that you are not getting any element, because you haven't any element with that class. I think that's all.