< input id="Agree" name="Agree" type="checkbox" > < label for="Agree" style="font-weight: 400;margin-left:10px">我已阅读并完全同意 <a data-toggle="modal" data-target="#myModal" style="color:blue;cursor:pointer"> 条款内容</a></label>
var agree = document.getElementById("Agree").checked
如果没勾选返回“请同意用户条款”