【前端】input radio多选事件获取所有选中的id，radio样式优化可修改

$("#all_button").on('click', function() {
obj = document.getElementsByClassName("input_radio_checked");
str = "";
for(i = 0; i < obj.length; i++) {
str += obj[i].id + " "; //这里是数字之间的空格
}
console.log(str)
alert(str)
})

radio样式优化css

<!--新增选择-->
<div class="fl radio"><input id="2" class="input_radio" type="radio" name="2" value=""><label for="2"></label></div>
<!---->

css如下：

.radio{
position: relative;
line-height: 30px;
margin-top: 1.4rem;
margin-left: 0.6rem;
}
 .radio{
position: relative;
line-height: 30px;
margin-top: 1.4rem;
margin-left: 0.6rem;
}

input[type="radio"] {
width: 20px;
height: 20px;
opacity: 0;
}

label {
position: absolute;
left: 5px;
top: 3px;
width: 20px;
height: 20px;
border-radius: 50%;
border: 1px solid #999;
}

/*设置选中的input的样式*/
/* + 是兄弟选择器,获取选中后的label元素*/
.top_color {
background-color: #fe6d32;
border: 1px solid #fe6d32;
}

.top_color::after {
position: absolute;
content: "";
width: 5px;
height: 10px;
top: 3px;
left: 6px;
border: 2px solid #fff;
border-top: none;
border-left: none;
transform: rotate(45deg)
}

效果：