[improvement] NumberKeyboard: jsx (#2558)

packages/number-keyboard/Key.js

@@ -0,0 +1,52 @@
+import { use } from '../utils';
+
+const [sfc, bem] = use('key');
+
+export default sfc({
+  props: {
+    type: Array,
+    text: [String, Number]
+  },
+
+  data() {
+    return {
+      active: false
+    };
+  },
+
+  computed: {
+    className() {
+      const types = this.type.slice(0);
+      this.active && types.push('active');
+      return bem(types);
+    }
+  },
+
+  methods: {
+    onFocus() {
+      this.active = true;
+      this.$emit('press', this.text);
+    },
+
+    onBlur(event) {
+      event.preventDefault();
+      event.stopPropagation();
+      this.active = false;
+    }
+  },
+
+  render(h) {
+    const { onBlur } = this;
+    return (
+      <i
+        class={['van-hairline', this.className]}
+        onTouchstart={this.onFocus}
+        onTouchmove={onBlur}
+        onTouchend={onBlur}
+        onTouchcancel={onBlur}
+      >
+        {this.text}
+      </i>
+    );
+  }
+});