Custom Element

Custom Element

自定义标签

两个硬性要求：

1、标签名必须带横杠'-'，如<my-tag>

2、其prototype扩展自HTMLElement

注册自定义标签：

document.registerElement(tagName, prototype);

Demo：

<template>
  <!-- Full of image slider awesomeness -->
</template>

<script>
  // Grab our template full of slider markup and styles
  var tmpl = document.querySelector('template');

  // Create a prototype for a new element that extends HTMLElement
  var ImgSliderProto = Object.create(HTMLElement.prototype);

  // Setup our Shadow DOM and clone the template
  ImgSliderProto.createdCallback = function() {
    var root = this.createShadowRoot();
    root.appendChild(document.importNode(tmpl.content, true));
  };

  // Register our new element
  var ImgSlider = document.registerElement('img-slider', {
    prototype: ImgSliderProto
  });
</script>