勾选复选框按钮可用否则不可用

Posted 2020-09-19 yaomengli

勾选复选框按钮可用否则不可用

function check(){
 var chec=document.getElementById("chec");
 if(chec.checked==true){
     alert(1111)
     document.getElementById("btn").removeAttribute("disabled")
 }else{
     alert(22222)
     document.getElementById("btn").disabled="disabled"
 }
}

<div class="form-group">
    <div class="col-sm-offset-2 col-sm-6">
        <div class="checkbox">
            <label>
                <input type="checkbox" id="chec" onclick="check()" > 我已看过并接受 <span id="xieyi" onclick="foo3()">《用户协议》</span>
            </label>
        </div>
    </div>
</div>
<div class="form-group">
    <div class="col-sm-offset-2 col-sm-10">
        <button type="button" class="btn btn-default"  id="btn" disabled>立即注册</button>
    </div>
</div>