前端-jq创建标签/添加属性/css属性

jq创建标签

var ptag = $(\'<p>\');  

jq添加属性如href，id，class，name等

$(\'#content\').attr(\'class/id/name/href\', \'active\')

$(\'#id\').html(\'标签的文本\')

$(\'#input).val(\'xxxxxxx\')

jq添加style属性即css，如width，height，text_aling

$("div").css({"background-color":"yellow","font-size":"200%"});

var css = {
    background-color: \'#EEE\',
    height: \'500px\',
    margin: \'10px\',
    padding: \'2px 5px\'
};
$("div").css(css);

jq向标签里添加标签

var ptag = $(\'p\')

在父标签里添加子标签

$(\'#id\').append(ptag)

jq获取checkbox的值

<ul >
                <li><input type="checkbox" name="friend_name" value="zhangshan">张三</li>
                <li><input type="checkbox" name="friend_name" value="lisi">李四</li>
                <li><input type="checkbox" name="friend_name" value="python">派神</li>
                <li><input type="checkbox" name="friend_name" value="java">加瓦</li>
</ul>


<script>
var friend_name = new Array()
        $(\'input[name="friend_name"]:checked\').each(function (i) {
            friend_name[i] = $(this).val()
        });

</script>

前端接收后端json数据，循环遍历添加标签

https://www.cnblogs.com/dibaosong/p/4572274.html
https://blog.csdn.net/qq_36229817/article/details/79816297

// 后端数据格式为：{key:value,key:value}
function userEdit(t) {
            // 1. 点击按钮时，获取该条信息的用户id，去获取该用户信息
            // 2. 将信息赋值给模态框，然后显示模态框
            // 3. 用户修改完信息后，点击保存，将数据发给后端保存，保存成功弹出对话框，告知保存成功，失败让用户重新提交
            let user_id = $(t).closest("tr").find("td").eq(1).text();
            $.ajax({
                type: "get",
                url: "/user/edit?user_id=" + user_id,
                success: function (d) {
                    console.log(d);
                    if (d.code != 0) {
                        alert(d.desc)
                    } else {
                        let user_data = d.data;
                        let html = "";
                        console.log(user_data)  // 如果获取的是json字典
                        $.each(user_data, function (key, value) {
                            {#html += \'<div class="form-group">\n\' +#}
                            {#    \'                            <label for="name" class="col-sm-2 control-label">姓名:</label>\n\' +#}
                            {#    \'                            <div class="col-sm-10">\n\' +#}
                            {#    \'                                <input type="text" class=" form-control" id="name" placeholder="姓名">\n\' +#}
                            {#    \'                            </div>\n\' +#}
                            {#    \'                        </div>\'#}

                            html += \'<div class="form-group">\' + \'<label for="\' + key + \'" class="col-sm-2 control-label">\' + key + \':</label>\n\'
                                + \'<div class="col-sm-10"> \n\' +
                                \'<input type="text" class=" form-control" id="\' + key + \'" placeholder="\' + value + \'">\' + \'</div>\' + \'</div>\'

                        });
                        $("#user-form").append(html)
                    }
                }
            });