undefind value getting textbox with id as an array

Question

I have to get value from textbox its name as an array.but i get response as undefined.

<input id="text[0][0]" type="text" value="" class="form-control label text-center" placeholder=" 1" style="">
<button>Text Box Value</button>

I tried jquery code

var button = $("button")
button.on("click", function(){
   var cell= $("#text[0][0]").val()
   alert(cell)
}))

Possible duplicate of [jQuery - help needed on ID selector when id is an array type notation](https://stackoverflow.com/questions/4254407/jquery-help-needed-on-id-selector-when-id-is-an-array-type-notation) — Rohit Mittal, Aug 31 '19 at 09:00
Possible duplicate of [Find DOM element by ID when ID contains square brackets?](https://stackoverflow.com/questions/1239095/find-dom-element-by-id-when-id-contains-square-brackets) — Nidhin Joseph, Aug 31 '19 at 09:35

User863 · Accepted Answer · 2019-08-31T12:46:30.907

You can use \\ to escape square bracket in jquery selector

https://learn.jquery.com/using-jquery-core/faq/how-do-i-select-an-element-by-an-id-that-has-characters-used-in-css-notation/

var button = $("button")
button.on("click", function() {
  var cell = $("#text\\[0\\]\\[0\\]").val()
  alert(cell)
})

<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>

<input id="text[0][0]" type="text" value="1">
<button>Text Box Value</button>

Note document.getElementById('text[0][0]') works without escaping square brackets

score 0 · Answer 2 · answered Aug 31 '19 at 10:43

You can do it as follow using Javascript.

$(document).ready(function(){
     var button = $("button");
     button.on("click", function(){
        var cell= document.getElementById('text[0][0]').value
        alert(cell)
     })
   });

<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<input id="text[0][0]" type="text" value="" class="form-control label text-center" placeholder=" 1" style="">
<button>Text Box Value</button>

undefind value getting textbox with id as an array

2 Answers2