//  按钮禁用function updateButtonDisabled($del) {for (let i = 0; i < $del.length; i++) {$del.eq(i).css({ cursor: "pointer", color: "#eee", background: "#cc614b" });$del.eq(i).removeAttr("disabled");}for (let i = 0; i < $del.length - 1; i++) {$del.eq(i).css({ cursor: "not-allowed", color: "#666", background: "#C9C9C9" });$del.eq(i).attr("disabled", "disabled");}}
　　// 在用户删除元素之后执行这行代码即可.updateButtonDisabled($("#participate button:contains('删除')"));

<table class="zp-table" id="participate" style="text-align: center; "><tbody><tr class="zp-bfinput"><th style="width: 50px;">序号</th><th style="width: 100px;">姓名</th><th style="width: 80px;">性别</th><th style="width: 100px;">年龄</th><th style="width: 100px;">职称</th><th>身份证号</th><th>所属单位</th><th>操作</th></tr><tr><th>1</th><th><input type="text" id="participate-name0" placeholder="请输入" autocomplete="off" lay-verify="required" class="zp-input"></th><th><select id="participate-gender0" lay-verify="required" lay-ignore=""><option value=""></option><option value="男">男</option><option value="女">女</option></select></th><th><input type="number" id="participate-age0" placeholder="请输入" autocomplete="off" lay-verify="required" class="zp-input"></th><th><select id="participate-title0" lay-verify="required" lay-ignore=""><option value=""></option><option value="初级">初级</option><option value="中级">中级</option><option value="副高">副高</option><option value="高级">高级</option></select></th><th><input type="text" id="participate-idcode0" placeholder="请输入" autocomplete="off" lay-verify="identity" class="zp-input"></th><th><input type="text" id="participate-firmName0" placeholder="请输入" autocomplete="off" lay-verify="required" class="zp-input"></th><th><button class="btn btn-delete participate-del" type="button" style="cursor: not-allowed; color: rgb(102, 102, 102); background: rgb(201, 201, 201);" disabled="disabled">删除</button></th></tr><tr><th>2</th><th><input type="text" id="participate-name1" placeholder="请输入" autocomplete="off" lay-verify="required" class="zp-input"></th><th><select id="participate-gender1" lay-verify="required" lay-ignore=""><option value=""></option><option value="男">男</option><option value="女">女</option></select></th><th><input type="number" id="participate-age1" placeholder="请输入" autocomplete="off" lay-verify="required" class="zp-input"></th><th><select id="participate-title1" lay-verify="required" lay-ignore=""><option value=""></option><option value="初级">初级</option><option value="中级">中级</option><option value="副高">副高</option><option value="高级">高级</option></select></th><th><input type="text" id="participate-idcode1" placeholder="请输入" autocomplete="off" lay-verify="identity" class="zp-input"></th><th><input type="text" id="participate-firmName1" placeholder="请输入" autocomplete="off" lay-verify="required" class="zp-input"></th><th><button class="btn btn-delete participate-del" type="button" style="cursor: pointer; color: rgb(238, 238, 238); background: rgb(204, 97, 75);">删除</button></th></tr></tbody></table>

 1  /**
 2    *   获取 项目主要参与人员信息 数据  participate
 3    */
 4
 5   function participate_data() {
 6     let participate_data = [];
 7     for (let i = 0; i < $("#participate tr").length - 1; i++) {
 8       participate_data.push({
 9         id: $("#participate tr").eq(i + 1).find("th").eq(1).find("span").text(),
10         name: $("#participate tr").eq(i + 1).find("th").eq(1).find("input").val(),
11         gender: $("#participate tr").eq(i + 1).find("th").eq(2).find("select").val(),
12         age: $("#participate tr").eq(i + 1).find("th").eq(3).find("input").val(),
13         title: $("#participate tr").eq(i + 1).find("th").eq(4).find("select").val(),
14         idcode: $("#participate tr").eq(i + 1).find("th").eq(5).find("input").val(),
15         firmName: $("#participate tr").eq(i + 1).find("th").eq(6).find("input").val()
16       });
17     }
18     return participate_data;
19   }