我的js

<case value="select">

    <div class="form-group item_{$[type]form.name} {$[type]form.extra_class}">
        <label class="left control-label">{$[type]form.title}：</label>
        <div class="right">
            <select name="{$[type]form.name}" id="province" onchange="changeCity($('#province option:selected') .val())" class="form-control select" {$[type]form.extra_attr}>
                <option value=''>请选择：</option>
                <foreach name="[type]form.options" item="option" key="option_key">
                    <php>if(is_array($option)):</php>
                        <option value="{$option_key}" <eq name="[type]form.value" value="$option_key"> selected</eq>
                            <foreach name="option" item="option2" key="option_key2">
                                {$option_key2}='{$option2}'
                            </foreach>>
                            {$option.title}
                        </option>
                    <php>else:</php>
                    <option value="{$option_key}" <present name='[type]form.value'><eq name="[type]form.value" value="$option_key"> selected</eq></present>>{$option}</option>
                    <php>endif;</php>
                </foreach>
            </select>
        </div>
    </div>
</case>

<script>
    var array  = new Array();//数组
    //js中的二维数组的下标可以使字符串
    <foreach name="[type]form.options" item="option" key="option_key">

        <foreach name="option" item="option2" key="option_key2">
        array['{option_key}']['{option_key2}'] = '{option2}';

        </foreach>
    </foreach>
    function initProvince(value) {
        array[value].forEach(function(value,index,array){
            var option = new Option(index, value);
            provinceObj.add(option); //把创建的option添加到下拉列表中
        });
    }
</script>

<case value="select">
    <div class="form-group item_{$[type]form.name} {$[type]form.extra_class}">
        <label class="left control-label">{$[type]form.title}：</label>
        <div class="right">
            <select name="{$[type]form.name}" id="city" class="form-control select" {$[type]form.extra_attr}>
                <option value=''>请选择：</option>

            </select>
        </div>
    </div>
</case>