textarea placeholder is set into textarea value (IE11)

[jsedlacek]

There is a weird behavior of textarea in Vue 0.11 and IE10/IE11.
Textarea's value is taken out of placeholder attribute.

var vm = new Vue({
  data: function() {
    return {value: ''}
  },
  template: '<textarea v-model="value" placeholder="aaa"></textarea>'
});
vm.$mount();
vm.$appendTo(document.body);
assert.equal(vm.value, '');

This results in:

AssertionError: expected 'aaa' to equal ''

All other browsers work fine.

[jsedlacek]

FYI it works correctly in Vue 0.10.6

[yyx990803]

This is actually a bug in IE10/11: when a <textarea> with placeholder attribute is cloned, the clone's value is set to the original's placeholder. I implemented a workaround in Vue's template parser to deal with this.

[jsedlacek]

Awesome, thanks.