[英]Displaying array objects in a table
我遇到的问题是,当我添加一个新演员时,信息显示在不同的行中。 看看onclick
函数。
我需要添加一个新演员并将其显示在表格中,就像显示前两个一样。
var actors, i; var Info = [{ firstName: "Jason", lastName: "Statham", birth: "July 26, 1967", gender: "Male", genre: "Action, Crime, Thriller" }, { firstName: "Mark", lastName: "Wahlberg", birth: "June 5, 1971", gender: "Male", genre: "Action, Comedy, Drama" }]; var displayActors = function(actors) { var str = "<table class='table'>"; str += "<tr>"; str += "<th>First Name</th><th>Last Name</th><th>Date of Birth</th><th>Gender</th><th>Genre</th>"; str += "</tr>"; for (i = 0; i < actors.length; i++) { str += "<tr>"; str += "<td>" + actors[i].firstName + "</td>"; str += "<td>" + actors[i].lastName + "</td>"; str += "<td>" + actors[i].birth + "</td>"; str += "<td>" + actors[i].gender + "</td>"; str += "<td>" + actors[i].genre + "</td>"; str += "</tr>"; } str += "</table>"; document.getElementById("actorGrid").innerHTML = str; } window.onload = function() { displayActors(Info); } var sub = document.getElementById("submit").onclick = function() { var fName = document.getElementById("fname").value; var lName = document.getElementById("lname").value; var dOb = document.getElementById("dob").value; var str = ""; str += "<td>" + Info.push({ firstName: fName }) + "</td>"; str += "<td>" + Info.push({ lastName: lName }) + "</td>"; str += "<td>" + Info.push({ birth: dOb }) + "</td>"; //Info.push({firstName: fName}, {lastName: lName}, {birth: dOb}); document.getElementById("actorGrid").innerHTML = str; displayActors(Info); }
<label>First Name</label><br /> <input type="text" id="fname"/><br /> <label>Last Name</label><br /> <input type="text" id="lname"/><br /> <label>Date of Birth</label><br /> <input type="date" id="dob"/><br /> <form action=""> <label>Gender:</label><br /> Male<input type="radio" name="gender" value="Male" id="male"/> Female<input type="radio" name="gender" value="Female" id="female"/><br /> </form> <form action=""> <label>Genre:</label><br /> <label>Action<input type="checkbox" id="action"/></label> <label>Adventure<input type="checkbox" id="adventure"/></label> <label>Thriller<input type="checkbox" id="thriller"/></label> <label>Drama<input type="checkbox" id="drama"/></label> </form> <br /><input type="button" id="submit" value="Add Actor" /> <hr> <div id="actorGrid"></div>
您没有为您生成的 3 <td>
生成任何行(即使您不需要最后 2 个<td>
的数据,它也应该是 5 <td>
)。
我实际上完成了表格以包括性别和类型:
使用createElement('tr')
和appendChild()
这就是为什么数据没有出现在表中的原因。 您生成了 s 但没有任何<tr>
可以放入它们。
使用insertCell()
用所需的<td>
填充<tr>
像您一样收集所有表单数据,除了我对最后两个数据字段执行以下操作:
3A。 对于我使用的性别:
`document.querySelector('input[name="gender"]:checked').value;`
3B。 对于我使用的类型:
.elements
HTMLCollection 来收集.elements
#genre(我在form#genre
添加了#genre
和[name="genre"]
)。
循环遍历genre.items().checked
提取每个genre.items().checked
的值genre.items().checked
做了一串结果。
使用addEventListener()
稍微更改了您的事件处理。 现在,JavaScript 之神会善待您的代码。 :P
下面是一个工作示例,一个小缺陷是流派中的最后一个项目将有一个逗号,
如果它不是“戏剧”。 文章最后提供参考。
var actors, i; var Info = [{ firstName: "Jason", lastName: "Statham", birth: "July 26, 1967", gender: "Male", genre: "Action, Crime, Thriller" }, { firstName: "Mark", lastName: "Wahlberg", birth: "June 5, 1971", gender: "Male", genre: "Action, Comedy, Drama" }]; var displayActors = function(actors) { var str = "<table class='table'>"; str += "<tr>"; str += "<th>First Name</th><th>Last Name</th><th>Date of Birth</th><th>Gender</th><th>Genre</th>"; str += "</tr>"; for (i = 0; i < actors.length; i++) { str += "<tr>"; str += "<td>" + actors[i].firstName + "</td>"; str += "<td>" + actors[i].lastName + "</td>"; str += "<td>" + actors[i].birth + "</td>"; str += "<td>" + actors[i].gender + "</td>"; str += "<td>" + actors[i].genre + "</td>"; str += "</tr>"; } str += "</table>"; document.getElementById("actorGrid").innerHTML = str; } window.onload = function() { displayActors(Info); } document.getElementById("submit").addEventListener('click', function() { var table = document.querySelector('.table'); var tRow = document.createElement('tr'); table.appendChild(tRow); var FN = tRow.insertCell(0); var LN = tRow.insertCell(1); var DOB = tRow.insertCell(2); var SEX = tRow.insertCell(3); var GEN = tRow.insertCell(4); var fName = document.getElementById("fname").value; var lName = document.getElementById("lname").value; var dOb = document.getElementById("dob").value; var gender = document.querySelector('input[name="gender"]:checked').value; var genre = document.getElementById("genre").elements; var gens = "", i; for (i = 0; i < genre.length; i++) { var g = genre.item(i); if (g.checked) { var story = g.value; if (i === genre.length - 1) { gens += story; } else { gens += story + ", "; } } else { gens += ''; } } FN.innerHTML = fName; LN.innerHTML = lName; DOB.innerHTML = dOb; SEX.innerHTML = gender; GEN.innerHTML = gens; }, false);
<label>First Name</label> <br /> <input type="text" id="fname" /> <br /> <label>Last Name</label> <br /> <input type="text" id="lname" /> <br /> <label>Date of Birth</label> <br /> <input type="date" id="dob" /> <br /> <form action=""> <label>Gender:</label> <br />Male <input type="radio" name="gender" value="Male" id="male" />Female <input type="radio" name="gender" value="Female" id="female" /> <br /> </form> <form id="genre" name="genre" action=""> <label>Genre:</label> <br /> <label>Action <input type="checkbox" id="action" value="Action" /> </label> <label>Adventure <input type="checkbox" id="adventure" value="Adventure" /> </label> <label>Thriller <input type="checkbox" id="thriller" value="Thriller" /> </label> <label>Drama <input type="checkbox" id="drama" value="Drama" /> </label> </form> <br /> <input type="button" id="submit" value="Add Actor" /> <hr> <div id="actorGrid"></div>
我相信缺少一些 td
尝试这个:
var sub = document.getElementById("submit").onclick = function() {
var fName = document.getElementById("fname").value;
var lName = document.getElementById("lname").value;
var dOb = document.getElementById("dob").value;
var str = "";
str += "<td>" + Info.push({firstName: fName}) + "</td>";
str += "<td>" + Info.push({lastName: lName}) + "</td>";
str += "<td>" + Info.push({birth: dOb}) + "</td>";
str += "<td></td>";
str += "<td></td>";
//Info.push({firstName: fName}, {lastName: lName}, {birth: dOb});
document.getElementById("actorGrid").innerHTML = str;
displayActors(Info);
}
嗯..我猜你忘了把 td 包装成 tr。
尝试更改提交点击侦听器如下:
var sub = document.getElementById("submit").onclick = function() {
var fName = document.getElementById("fname").value;
var lName = document.getElementById("lname").value;
var dOb = document.getElementById("dob").value;
var str = "<tr>";
str += "<td>" + Info.push({firstName: fName}) + "</td>";
str += "<td>" + Info.push({lastName: lName}) + "</td>";
str += "<td>" + Info.push({birth: dOb}) + "</td>";
str += "</tr>";
//Info.push({firstName: fName}, {lastName: lName}, {birth: dOb});
document.getElementById("actorGrid").innerHTML = str;
displayActors(Info);
}
希望这可以帮助。
正如@Agu V 回答的那样,您错过了 tds。
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