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docs/mds/XM18.md

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+## 多选上限
+
+
+### 最多选择2个
+
+:::demo 
+```html
+<div id="demo1" class="xm-select-demo"></div>
+
+<script>
+var demo1 = xmSelect.render({
+    el: '#demo1', 
+    max: 2,
+    data: [
+        {name: '张三', value: 1, selected: true},
+        {name: '李四', value: 2, selected: true},
+        {name: '王五', value: 3},
+    ]
+})
+</script>
+```
+:::
+
+
+### 自定义选超的提示
+
+:::demo 
+```html
+<div id="demo2" class="xm-select-demo"></div>
+
+<script>
+var demo2 = xmSelect.render({
+    el: '#demo2', 
+    max: 2,
+    maxMethod(seles, item){
+        alert(`${item.name}不能选了, 已经超了`)
+    },
+    data: [
+        {name: '张三', value: 1, selected: true},
+        {name: '李四', value: 2, selected: true},
+        {name: '王五', value: 3},
+    ]
+})
+</script>
+```
+:::
+
+
+### 自定义选超的闪烁颜色
+
+:::demo 
+```html
+<div id="demo3" class="xm-select-demo"></div>
+
+<script>
+var demo3 = xmSelect.render({
+    el: '#demo3', 
+    max: 2,
+    theme: {
+        maxColor: 'orange',
+    },
+    data: [
+        {name: '张三', value: 1, selected: true},
+        {name: '李四', value: 2, selected: true},
+        {name: '王五', value: 3},
+    ]
+})
+</script>
+```
+:::