跪求 weui 这个里面的<script type="text/html> 这个东西什么时候执行

``` <script type="text/html" id="tpl_button">
<div class="page">
    <div class="page__hd">
        <h1 class="page__title">Button</h1>
        <p class="page__desc">按钮</p>
    </div>
    <div class="page__bd page__bd_spacing">

        <div class="button-sp-area">
        <a href="javascript:;" class="weui-btn weui-btn_primary">页面主操作</a>
        <a href="javascript:;" class="weui-btn weui-btn_primary weui-btn_loading"><i class="weui-loading"></i>页面主操作</a>
        <a href="javascript:;" class="weui-btn weui-btn_disabled weui-btn_primary">页面主操作</a>
        <a href="javascript:;" class="weui-btn weui-btn_default">页面次要操作</a>
        <a href="javascript:;" class="weui-btn weui-btn_default weui-btn_loading"><i class="weui-loading"></i>页面次操作</a>
        <a href="javascript:;" class="weui-btn weui-btn_disabled weui-btn_default">页面次要操作</a>
        <a href="javascript:;" class="weui-btn weui-btn_warn">警告类操作</a>
        <a href="javascript:;" class="weui-btn weui-btn_warn weui-btn_loading"><i class="weui-loading"></i>警告类操作</a>
        <a href="javascript:;" class="weui-btn weui-btn_disabled weui-btn_warn">警告类操作</a>
        </div>

        <div class="button-sp-area">
            <a href="javascript:;" class="weui-btn weui-btn_block weui-btn_primary">页面主操作</a>
            <a href="javascript:;" class="weui-btn weui-btn_block weui-btn_default">页面次要操作</a>
            <a href="javascript:;" class="weui-btn weui-btn_block weui-btn_warn">警告类操作</a>
        </div>

        <div class="button-sp-area cell">
          <a href="javascript:;" class="weui-btn_cell weui-btn_cell-default">普通行按钮</a>
          <a href="javascript:;" class="weui-btn_cell weui-btn_cell-primary">强调行按钮</a>
          <a href="javascript:;" class="weui-btn_cell weui-btn_cell-primary">
            <img class="weui-btn_cell__icon" src="data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAC4AAAAuCAMAAABgZ9sFAAAAVFBMVEXx8fHMzMzr6+vn5+fv7+/t7e3d3d2+vr7W1tbHx8eysrKdnZ3p6enk5OTR0dG7u7u3t7ejo6PY2Njh4eHf39/T09PExMSvr6+goKCqqqqnp6e4uLgcLY/OAAAAnklEQVRIx+3RSRLDIAxE0QYhAbGZPNu5/z0zrXHiqiz5W72FqhqtVuuXAl3iOV7iPV/iSsAqZa9BS7YOmMXnNNX4TWGxRMn3R6SxRNgy0bzXOW8EBO8SAClsPdB3psqlvG+Lw7ONXg/pTld52BjgSSkA3PV2OOemjIDcZQWgVvONw60q7sIpR38EnHPSMDQ4MjDjLPozhAkGrVbr/z0ANjAF4AcbXmYAAAAASUVORK5CYII=">
            强调行按钮
          </a>
          <a href="javascript:;" class="weui-btn_cell weui-btn_cell-warn">警告行按钮</a>
        </div>

        <div class="button-sp-area">
            <a href="javascript:;" class="weui-btn weui-btn_plain-default">按钮</a>
            <a href="javascript:;" class="weui-btn weui-btn_plain-default weui-btn_plain-disabled">按钮</a>
            <a href="javascript:;" class="weui-btn weui-btn_plain-primary">按钮</a>
            <a href="javascript:;" class="weui-btn weui-btn_plain-primary weui-btn_plain-disabled">按钮</a>
            <a href="javascript:;" class="weui-btn weui-btn_mini weui-btn_primary">按钮</a>
            <a href="javascript:;" class="weui-btn weui-btn_mini weui-btn_default">按钮</a>
            <a href="javascript:;" class="weui-btn weui-btn_mini weui-btn_warn">按钮</a>
        </div>
    </div>
    <div class="page__ft">
        <a href="javascript:home()"><img src="./images/icon_footer_link.png" /></a>
    </div>
</div>

</script>
    <script type="text/html" id="tpl_list">
<div class="page">
    <div class="page__hd">
        <h1 class="page__title">List</h1>
        <p class="page__desc">列表</p>
    </div>
    <div class="page__bd">
        <div class="weui-cells__title">带说明的列表项</div>
        <div class="weui-cells">
            <div class="weui-cell">
                <div class="weui-cell__bd">
                    <p>标题文字</p>
                </div>
                <div class="weui-cell__ft">说明文字</div>
            </div>
            <div class="weui-cell weui-cell_swiped">
                <div class="weui-cell__bd" style="transform: translateX(-68px)">
                    <div class="weui-cell">
                        <div class="weui-cell__bd">
                            <p>标题文字</p>
                        </div>
                        <div class="weui-cell__ft">说明文字</div>
                    </div>
                </div>
                <div class="weui-cell__ft">
                    <a class="weui-swiped-btn weui-swiped-btn_warn" href="javascript:">删除</a>
                </div>
            </div>
        </div>

        <div class="weui-cells__title">带图标、说明的列表项</div>
        <div class="weui-cells">
            <div class="weui-cell weui-cell_example">
                <div class="weui-cell__hd"><img src="data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAC4AAAAuCAMAAABgZ9sFAAAAVFBMVEXx8fHMzMzr6+vn5+fv7+/t7e3d3d2+vr7W1tbHx8eysrKdnZ3p6enk5OTR0dG7u7u3t7ejo6PY2Njh4eHf39/T09PExMSvr6+goKCqqqqnp6e4uLgcLY/OAAAAnklEQVRIx+3RSRLDIAxE0QYhAbGZPNu5/z0zrXHiqiz5W72FqhqtVuuXAl3iOV7iPV/iSsAqZa9BS7YOmMXnNNX4TWGxRMn3R6SxRNgy0bzXOW8EBO8SAClsPdB3psqlvG+Lw7ONXg/pTld52BjgSSkA3PV2OOemjIDcZQWgVvONw60q7sIpR38EnHPSMDQ4MjDjLPozhAkGrVbr/z0ANjAF4AcbXmYAAAAASUVORK5CYII=" alt="" style="width:20px;margin-right:16px;display:block"></div>
                <div class="weui-cell__bd">
                    <p>标题文字</p>
                </div>
                <div class="weui-cell__ft">说明文字</div>
            </div>
            <div class="weui-cell weui-cell_example">
                <div class="weui-cell__hd"><img src="data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAC4AAAAuCAMAAABgZ9sFAAAAVFBMVEXx8fHMzMzr6+vn5+fv7+/t7e3d3d2+vr7W1tbHx8eysrKdnZ3p6enk5OTR0dG7u7u3t7ejo6PY2Njh4eHf39/T09PExMSvr6+goKCqqqqnp6e4uLgcLY/OAAAAnklEQVRIx+3RSRLDIAxE0QYhAbGZPNu5/z0zrXHiqiz5W72FqhqtVuuXAl3iOV7iPV/iSsAqZa9BS7YOmMXnNNX4TWGxRMn3R6SxRNgy0bzXOW8EBO8SAClsPdB3psqlvG+Lw7ONXg/pTld52BjgSSkA3PV2OOemjIDcZQWgVvONw60q7sIpR38EnHPSMDQ4MjDjLPozhAkGrVbr/z0ANjAF4AcbXmYAAAAASUVORK5CYII=" alt="" style="width:20px;margin-right:16px;display:block"></div>
                <div class="weui-cell__bd">
                    <p>标题文字</p>
                </div>
                <div class="weui-cell__ft">说明文字</div>
            </div>
        </div>

        <div class="weui-cells__title">带跳转的列表项</div>
        <div class="weui-cells">
            <a class="weui-cell weui-cell_access" href="javascript:;">
                <div class="weui-cell__bd">
                    <p>cell standard</p>
                </div>
                <div class="weui-cell__ft">
                </div>
            </a>
            <a class="weui-cell weui-cell_access" href="javascript:;">
                <div class="weui-cell__bd">
                    <p>cell standard</p>
                </div>
                <div class="weui-cell__ft">
                </div>
            </a>
        </div>

        <div class="weui-cells__title">带说明、跳转的列表项</div>
        <div class="weui-cells">
            <a class="weui-cell weui-cell_access" href="javascript:;">
                <div class="weui-cell__bd">
                    <p>cell standard</p>
                </div>
                <div class="weui-cell__ft">说明文字</div>
            </a>
            <a class="weui-cell weui-cell_access" href="javascript:;">
                <div class="weui-cell__bd">
                    <p>cell standard</p>
                </div>
                <div class="weui-cell__ft">说明文字</div>
            </a>

        </div>

        <div class="weui-cells__title">带图标、说明、跳转的列表项</div>
        <div class="weui-cells">

            <a class="weui-cell weui-cell_access weui-cell_example" href="javascript:;">
                <div class="weui-cell__hd"><img src="data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAC4AAAAuCAMAAABgZ9sFAAAAVFBMVEXx8fHMzMzr6+vn5+fv7+/t7e3d3d2+vr7W1tbHx8eysrKdnZ3p6enk5OTR0dG7u7u3t7ejo6PY2Njh4eHf39/T09PExMSvr6+goKCqqqqnp6e4uLgcLY/OAAAAnklEQVRIx+3RSRLDIAxE0QYhAbGZPNu5/z0zrXHiqiz5W72FqhqtVuuXAl3iOV7iPV/iSsAqZa9BS7YOmMXnNNX4TWGxRMn3R6SxRNgy0bzXOW8EBO8SAClsPdB3psqlvG+Lw7ONXg/pTld52BjgSSkA3PV2OOemjIDcZQWgVvONw60q7sIpR38EnHPSMDQ4MjDjLPozhAkGrVbr/z0ANjAF4AcbXmYAAAAASUVORK5CYII=" alt="" style="width:20px;margin-right:16px;display:block"></div>
                <div class="weui-cell__bd">
                    <p>cell standard</p>
                </div>
                <div class="weui-cell__ft">说明文字</div>
            </a>
            <a class="weui-cell weui-cell_access weui-cell_example" href="javascript:;">
                <div class="weui-cell__hd"><img src="data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAC4AAAAuCAMAAABgZ9sFAAAAVFBMVEXx8fHMzMzr6+vn5+fv7+/t7e3d3d2+vr7W1tbHx8eysrKdnZ3p6enk5OTR0dG7u7u3t7ejo6PY2Njh4eHf39/T09PExMSvr6+goKCqqqqnp6e4uLgcLY/OAAAAnklEQVRIx+3RSRLDIAxE0QYhAbGZPNu5/z0zrXHiqiz5W72FqhqtVuuXAl3iOV7iPV/iSsAqZa9BS7YOmMXnNNX4TWGxRMn3R6SxRNgy0bzXOW8EBO8SAClsPdB3psqlvG+Lw7ONXg/pTld52BjgSSkA3PV2OOemjIDcZQWgVvONw60q7sIpR38EnHPSMDQ4MjDjLPozhAkGrVbr/z0ANjAF4AcbXmYAAAAASUVORK5CYII=" alt="" style="width:20px;margin-right:16px;display:block"></div>
                <div class="weui-cell__bd">
                    <p>cell standard</p>
                </div>
                <div class="weui-cell__ft">说明文字</div>
            </a>
        </div>
    </div>
    <div class="page__ft">
        <a href="javascript:home()"><img src="./images/icon_footer_link.png" /></a>
    </div>
</div>

运行这个文件的时候第一个执行

假如此元素内部的代码没有位于某个函数中，那么这些代码会在页面被加载时被立即执行。
https://www.w3school.com.cn/tags/tag_script.asp

在weui的example.js 里 你可以去看一下
function setPageManager(){
var pages = {}, tpls = $('script[type="text/html"]');
var winH = $(window).height();

    for (var i = 0, len = tpls.length; i < len; ++i) {
        var tpl = tpls[i], name = tpl.id.replace(/tpl_/, '');
        pages[name] = {
            name: name,
            url: '#' + name,
            template: '#' + tpl.id
        };
    }
    pages.home.url = '#';

    for (var page in pages) {
        pageManager.push(pages[page]);
    }
    pageManager
        .setPageAppend(function($html){
            var $foot = $html.find('.page__ft');
            if($foot.length < 1) return;

            if($foot.position().top + $foot.height() < winH){
                $foot.addClass('j_bottom');
            }else{
                $foot.removeClass('j_bottom');
            }
        })
        .setDefault('home')
        .init();
}

function init(){
    preload();
    fastClick();
    androidInputBugFix();
    setJSAPI();
    setPageManager();