Updating localstorage arrays in Javascript?

Question

I'm having hard time on this localstorage array. Hope you can help me .

here is my code..

var bank = document.getElementById('name_bank').value;

function AddBank(bank){ 
  var data = JSON.parse(localStorage.bank); 
    if(!$.inArray( bank, data )){
    data[]=bank;
  }
   localStorage.setItem("bank", JSON.stringify(data)); 
}

and i have a error Uncaught SyntaxError: Unexpected token ]

@NishantDixit OP wants to update the data. So read it, add element and save it again. — Ivar, May 05 '18 at 11:58
@MuhammadAshraf Read the link I added in my first comment. That answers your question. Then please accept it as a duplicate. — Ivar, May 05 '18 at 11:58

Velusamy Venkatraman · Accepted Answer · 2018-05-05T11:54:50.340

0

Please Try This

<input type="text" id="name_bank" >
<button onclick="AddBank()">
save
</button>
<script>
function AddBank(){
var bank = document.getElementById('name_bank').value;
console.log(bank);
  var data = [];
  aa = JSON.parse(localStorage.getItem("bank"))
  if(aa != null){
    data= aa;
  }
  if(bank != null){
  data.push(bank)
  }


   localStorage.setItem("bank", JSON.stringify(data));
}
</script>

edited May 05 '18 at 11:54

answered May 05 '18 at 11:45

Velusamy Venkatraman

726
4
16

score -1 · Answer 2 · answered May 05 '18 at 11:42

-1

var bank = document.getElementById('name_bank').value;

function AddBank(bank){ 
  var data = JSON.parse(localStorage.bank); 
    if(!$.inArray( bank, data )){
    data.push(bank);
  }
   localStorage.setItem("bank", JSON.stringify(data)); 
}

answered May 05 '18 at 11:42

Basavaraju US

134
5

Please try to explain, what you've changed. – Michael W. Czechowski May 05 '18 at 11:58

Updating localstorage arrays in Javascript?

2 Answers2