怎样能让checkbox默认打开或始终打开？

[小和尚已还俗]

这是源文件
{if $deductcredit>0}
<div class="fui-cell">
<div class="fui-cell-label" style="width: auto;"> <span id="deductcredit_info" class='text-danger'>{$deductcredit}</span> {$_W['shopset']['trade']['credittext']}可抵扣 ￥<span id="deductcredit_money" class='text-danger'>{php echo number_format($deductmoney,2)}</span> 元</div>
<div class="fui-cell-info"></div>
<span id="deductcredit_money" class='text-danger'><strong>点击开启</strong></span>
<div class="fui-cell-remark noremark"><input id="deductcredit" data-credit="{$deductcredit}" data-money='{$deductmoney}' type="checkbox" class="fui-switch fui-switch-small fui-switch-danger pull-right"></div>
</div>
{/if}
{if $deductcredit2>0}
<div class="fui-cell">
<div class="fui-cell-label" style="width: auto;">{$_W['shopset']['trade']['moneytext']}可抵扣 <span id='deductcredit2_money' class="text-danger">{php echo number_format($deductcredit2,2)}</span>元
{if $include_dispath}<span id="include_dispath">（含运费）</span>{/if}</div>
<div class="fui-cell-info"></div>
<div class="fui-cell-remark noremark info"><input id="deductcredit2" data-credit2="{$deductcredit2}" type="checkbox" class="fui-switch fui-switch-small fui-switch-danger pull-right"></div>
</div>
{/if}

我在type="checkbox"后面加了checked="checked"没用，
加了checked="1"没用，
加了checked="true"也没用
是这个div和这设置有冲突吗
我用的是别人的源码
请教怎么改才行

源文件底部还有一段会不会和这个有影响

{template '_account'}
{template 'sale/coupon/util/picker'}
{if $show_card}
{template 'membercard/picker'}
{/if}
{php $followed = m('user')->followed($member['openid'])}

<script language='javascript'>

//监听浏览器返回上一页
$(function(){
pushHistory();
});
function pushHistory(){
window.addEventListener("popstate", function(e){
$('.invoice-picker').hide();
}, false);
};


var clientHeight = document.documentElement.clientHeight || document.body.clientHeight;
$(window).on('resize', function () {
var nowClientHeight = document.documentElement.clientHeight || document.body.clientHeight;
if (clientHeight > nowClientHeight) {
//键盘弹出的事件处理
var h = document.body.clientHeight;
$('#addaddress .address-alert').removeClass('style1');
$('#addaddress .address-alert').addClass('style2');
}
else {
//键盘收起的事件处理
var h = document.body.clientHeight;
$('#addaddress .address-alert').removeClass('style2');
$('#addaddress .address-alert').addClass('style1');
}
});


$(window).resize(function() {
$('.fui-navbar').css('display', 'block')
});
$(function () {
setTimeout(function () {
var width = window.screen.width * window.devicePixelRatio;
var height = window.screen.height * window.devicePixelRatio;
var h = document.body.offsetHeight * window.devicePixelRatio;
// 微信版本6.6.7
if(h == 1923){
$(".fui-navbar,.cart-list,.fui-footer,.fui-content.navbar").removeClass('iphonex');
return;
}

if(height==2436 && width==1125){
$(".fui-navbar,.cart-list,.fui-footer,.fui-content.navbar").addClass('iphonex')
}
},600)
})
require(['biz/order/address'], function (modal) {
modal.initPost({new_area: {php echo $new_area}, address_street: {php echo $address_street}});
});

require(['biz/order/create'], function (modal) {
modal.init({php echo json_encode($createInfo)},{php echo empty($invoice_arr)?'false':$invoice_arr}||{});


{if !$followed && !empty($share['followqrcode'])&& empty($trade['shop_strengthen'])}
$("#attention").css("display","block");
{/if}

$("#attention-colse").click(function(){
$("#attention").addClass("shut")
setTimeout(function(){
$("#attention").css("display","none")

$("#attention").removeClass("shut")
},1000)
})

$(".back2").click(function(){
$("#giveUp").css("display","block")
})
$("#giveUp .cancel").click(function(){
$("#giveUp").css("display","none")
})

$("#address-colse").click(function(){
$("#addaddress").addClass("shut")
setTimeout(function(){
$("#addaddress").css("display","none")

$("#addaddress").removeClass("shut")
},1000)
})
$("#address-show").click(function(){
$("#addaddress").css("display","block")
})

});</script>

[于小九]

原语句

<input id="deductcredit" data-credit="{$deductcredit}" data-money='{$deductmoney}' type="checkbox" class="fui-switch fui-switch-small fui-switch-danger pull-right">

中新增

checked="checked"

属性可以使勾选框为默认选中状态，以下为补齐修改后的一段

<input id="deductcredit" data-credit="{$deductcredit}" data-money='{$deductmoney}' type="checkbox" class="fui-switch fui-switch-small fui-switch-danger pull-right" checked="checked">

[小和尚已还俗]

加了没用哦，会被刷新掉，打开瞬间打开，马上就自动关闭了

[代龙涛]

可能是js定义的自动关闭，去一下class的值或者ID的值调试一下应该就可以找到怎么解决