What is ID attribute

what is id attribute and how it is useful?

Hi
In my view ID attributes works like assigning a name to an element.

For eg in a form you have 5 input box and you give them 1,2,3,4,5 as id

now in case you wish to use element plugin you can give reference easily by pointing action to let say 1,3,5 elements and skips element plugin action on 4,5

what about toggle? If element 1 is visible element 2 will not be visible? How do I set this up?

You may add 2 inputbox and toggle

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I tried doing this.

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okay now i get it. Thank you.