Guide on dynamically changing the color of polymer 1.0 paper-button from an array of colors

Question

Guide on dynamically changing the color of polymer 1.0 paper-button from an array of colors

I have an array called buttonColors that contains a set of colors in hex format. I am looking to create paper-buttons, each with the color from the buttonColors array. How can I achieve this in Polymer 1.0?

<template is="dom-repeat" items="{{buttonColors}}">
      <paper-button style="background-color:{{item}}" >
                  <b>click me</b>
      </paper-button>
</template>

The code snippet provided above does not seem to be working as expected. Any suggestions on how to fix it would be greatly appreciated.

javascript css polymer web-component polymer-1.0

Answer 1

Answer №1

To implement this functionality, you must first define a function and then invoke it in the specified manner:

<template is="dom-repeat" items="{{buttonColors}}">
      <paper-button style="{{customizeButton(item)}}" >
                  <b>click me</b>
      </paper-button>
</template>

<script>
customizeButton:function(color)
{
 var style= "background-color:"+color;
  return style;
}
</script>

Answer 2

To implement this functionality, you must first define a function and then invoke it in the specified manner:

<template is="dom-repeat" items="{{buttonColors}}">
      <paper-button style="{{customizeButton(item)}}" >
                  <b>click me</b>
      </paper-button>
</template>

<script>
customizeButton:function(color)
{
 var style= "background-color:"+color;
  return style;
}
</script>

Answer 3

Answer №2

ebidel always provides insightful comments, showcasing his talent. (He played a key role in developing Polymer at Google)

The version 1.0 does not allow expressions in {{}} bindings. To work around this, you can use a computed property like: style="{{_computeStyle(item)}}" ... Check out the documentation for more details

For easy reference, I've included some sample code below.

Sample Code

<dom-module id="x-element">
  <template is="dom-repeat" items="{{buttonColors}}">
    <paper-button style$="{{_computeStyle}}"> <b>Click Me</b> </paper-button>
  </template> ...
  <script>
    (function() {
      Polymer({
        is: "x-element",
        properties: {
          value: {
            type: Number,
            notify: true
          }
        },
        _computeStyle: function(item) {
          // Add your style computation logic here
          return "background-color: red";
        }
      });
    })()
  </script>
</dom-module>

Answer 4

ebidel always provides insightful comments, showcasing his talent. (He played a key role in developing Polymer at Google)

The version 1.0 does not allow expressions in {{}} bindings. To work around this, you can use a computed property like: style="{{_computeStyle(item)}}" ... Check out the documentation for more details

For easy reference, I've included some sample code below.

Sample Code

<dom-module id="x-element">
  <template is="dom-repeat" items="{{buttonColors}}">
    <paper-button style$="{{_computeStyle}}"> <b>Click Me</b> </paper-button>
  </template> ...
  <script>
    (function() {
      Polymer({
        is: "x-element",
        properties: {
          value: {
            type: Number,
            notify: true
          }
        },
        _computeStyle: function(item) {
          // Add your style computation logic here
          return "background-color: red";
        }
      });
    })()
  </script>
</dom-module>

Guide on dynamically changing the color of polymer 1.0 paper-button from an array of colors

Answer №1

Answer №2

Sample Code

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