##Hello World

使用`data-bind`绑定数据。

js内容解读

* `viewModel = {...}`创建`u.DataTable`实例集合
* `dt1` 创建名为`dt1`的`u.DataTable`实例集合
* `f1` 定义名为`f1`的实例中某一条件组合，为`dt1`的一个子集
* `app = u.createApp({...})`,页面初始化
* `setValue`绑定数据

html内容解读

* `data-bind`进行数据绑定
* `"text:dt1.ref('f1')">`指定绑定的实例集合：`dt1`下的`f1`

<div class="example-content"><!-- HTML -->
<div id="demo_div"></div></div>
<div class="example-content ex-hide"><script>// JS
var app,viewModel;
viewModel = {
    dt1: new u.DataTable({
        meta:{
            f1:{
                type:'string',
                maxLength:12
            }
        }
    })
};

app = u.createApp({
    el:'body',
    model:viewModel
});

var r = viewModel.dt1.createEmptyRow();
r.setValue('f1','Hello World');

var demoDiv = document.getElementById('demo_div');
var dtVal = viewModel.dt1.getValue('f1');
demoDiv.innerHTML = dtVal;
</script></div>
<div class="examples-code"><pre><code>&lt;!-- HTML -->
&lt;div id="demo_div">&lt;/div></code></pre>
</div>
<div class="examples-code"><pre><code>// JS
var app,viewModel;
viewModel = {
    dt1: new u.DataTable({
        meta:{
            f1:{
                type:'string',
                maxLength:12
            }
        }
    })
};

app = u.createApp({
    el:'body',
    model:viewModel
});

var r = viewModel.dt1.createEmptyRow();
r.setValue('f1','Hello World');

var demoDiv = document.getElementById('demo_div');
var dtVal = viewModel.dt1.getValue('f1');
demoDiv.innerHTML = dtVal;</code></pre>
</div>