✨ 新增input-number(数字输入框)、tooltip(文字提示)、修改input组件可接受number类型值

src/tools/domUtil.js

@@ -0,0 +1,27 @@
+// 获取标签与窗口顶边距离
+export function getTop(elem) {
+    return elem.offsetTop + (elem.offsetParent && getTop(elem.offsetParent) || 0);
+}
+
+// 获取标签与窗口左边距离
+export function getLeft(elem) {
+    return elem.offsetLeft + (elem.offsetParent && getLeft(elem.offsetParent) || 0);
+}
+
+// 事件绑定
+export function on(elem, events, handler) {
+    [].concat(events).forEach(event => elem.addEventListener(event, handler, false));
+}
+
+export function once (elem, events, handler) {
+    const listener = function (_this, args) {
+        handler.apply(_this, args)
+        off(elem, events, listener);
+    }
+    on(elem, events, listener)
+}
+
+// 事件解除
+export function off(elem, events, handler) {
+    [].concat(events).forEach(event => elem.removeEventListener(event, handler, false));
+}