jQuery获取由Attribute-Starts-With-Selector选择的元素的值

Question

I am trying to get each value of each element selected by regex.

Specifically, i have a list of inputs like this, generated by a loop

 <input type="file" name="file[{$some_file.id}]">

anh i am trying to get the value of each input by jquery like this

$("input[name^='file[']").change(function () {
  //get each input value
})

I tried this.val() but obviously it did not work. I really appreciate all your help.

Answer 1

The event handler this binding is the element itself, not a jQuery object.

From .on()

When jQuery calls a handler, the this keyword is a reference to the element where the event is being delivered

so you want

this.value

See https://developer.mozilla.org/en-US/docs/Web/HTML/Element/input/file#Value

 $('input[name^="file["]').on('change', function() { console.info(this.name, this.value) }) 

 <script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script> <input type="file" name="file[0]"> <input type="file" name="file[1]"> <input type="file" name="file[2]"> <input type="file" name="not-this-one"> 

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Alternatively, wrap the element in a jQuery object like this and use the .val() method

$(this).val()