Hi Sai,

In 1.0, expressions are not supported in data binding {{}}. You'll need to
use computed property instead:
https://www.polymer-project.org/1.0/docs/migration.html#data-binding

style="display:{{displayArrow}}"

needs to be something like

style="{{computeDisplayArrow(displayArrow)}}"


On Sun, Jul 26, 2015 at 12:31 AM Sai Roshan Chhetri <[email protected]>
wrote:

> Reply if possible
>
>
> On Saturday, July 25, 2015 at 2:44:13 PM UTC+5:30, Sai Roshan Chhetri
> wrote:
>>
>> I am trying to hide the paper-icon-button and want the button hidden
>> while the page is loaded. I  have following code written on polymer1.0. and
>> this does not seem to hide the button.
>> Kindly help and let me know where am I missing?
>>
>> <!doctype html>
>> <html>
>>      <head>
>>              <title>Test Home</title>
>>
>>              <meta charset="utf-8">
>>
>>
>>
>>              <meta http-equiv="X-UA-Compatible" content="IE=edge,chrome=1">
>>              <meta name="viewport" content="width=device-width, 
>> minimum-scale=1.0, initial-scale=1, user-scalable=yes">
>>
>>              <link rel="import" 
>> href="bower_components/paper-icon-button/paper-icon-button.html">
>>              <link rel="import" 
>> href="bower_components/iron-icons/iron-icons.html">
>>              <style>
>>              </style>
>>      </head>
>>
>>      <body>
>>              <template is="dom-bind" id="t">
>>
>>                      <paper-toolbar id="header">
>>                              <paper-icon-button icon="arrow-back" 
>> style="display:{{displayArrow}}" alt="arrow-back" title="arrow-back" 
>> on-click="onBackPress"></paper-icon-button>
>>                              
>>                              <h3>TestPage</h3>
>>                      </paper-toolbar>
>>
>>                      
>>
>>              </template>
>>
>>              <script>
>>                      var template = document.querySelector('#t');
>>                      template.displayArrow='none'
>>                                              
>>              </script>
>>
>>      </body></html>
>>
>>  Follow Polymer on Google+: plus.google.com/107187849809354688692
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