在javascript中为动态表添加表头 [英] Add table header for dynamic table in javascript
问题描述
我正在尝试用 javascript 创建一个表并在其上放置一个标题.我试图合并这个 SO question 的答案，但也许我没有'不要把它放在正确的地方.表格的主体完美运行，但标题作为一堆文本附加到顶部，而不是格式良好的标题.代码如下:
I'm trying to create a table in javascript and put a header on it. I tried to incorporate the answer from this SO question but perhaps I didn't include it in the right place. The body of the table works perfectly, but the header appends as a bunch of text to the top instead of a nicely formatted header. Here is the code:
function generate_table() {
// get the reference for the body
var body = document.getElementsByTagName("body")[0];
// creates a <table> element and a <tbody> element
var tbl = document.createElement("table");
//var header = document.createElement("header");
var header = '<tr><th>Country</th><th>City</th></tr>';
//var header = "<th>Header</th>";
var tblBody = document.createElement("tbody");
// creating all cells
for (var i = 0; i < results.weak_sent.length; i++) {
// creates a table row
var row = document.createElement("tr");
for (var j = 0; j < 2; j++) {
// Create a <td> element and a text node, make the text
// node the contents of the <td>, and put the <td> at
// the end of the table row
var cell = document.createElement("td");
if (j == 0) {
var cellText = document.createTextNode(results.weak_sent_num[i]);
} else {
var cellText = document.createTextNode(results.weak_sent[i]);
}
cell.appendChild(cellText);
row.appendChild(cell);
}
// add the row to the end of the table body
tblBody.appendChild(row);
}
tbl.append(header)
// put the <tbody> in the <table>
tbl.appendChild(tblBody);
// appends <table> into <body>
body.appendChild(tbl);
// sets the border attribute of tbl to 2;
tbl.setAttribute("border", "2");
}
它正确打印行和列，但不是将 <tr><th> 解释为 HTML 标签，而是将它们作为文本打印出来.我还注意到，如果表格文本包含任何 HTML 标记，例如 或 ，它们也会作为纯文本返回.我怎样才能让它们被读取为 HTML.我也有一个 CSS 页面，但没有重置或任何(故意)影响粗体或表格的使用.这是我的结果
It prints the rows and the columns correctly, but instead of interpreting the <tr><th> as HTML tags it just prints them out as text. I've also noticed that if the table text contains any HTML tags, like <strong> or <b>, they are returned as plain text as well. How can I make them be read as HTML. I have a CSS page as well but there's no reset or anything (intentionally) affecting the use of bold or tables. Here's my result
<tr><th>Country</th><th>City</th></tr>
1 Row 1 text
2 Row <b>2</b> text
推荐答案
Solution1您附加 tbody 行的方式，您也可以插入标题.因此，您可以使用如下所示的内容，而不是 tbl.append(header) 并定义标题字符串:
Solution1
The way you are appending tbody rows, you can insert the heading as well. So instead of tbl.append(header) and defining the header string, you can use something like below:
results = {
weak_sent: [
"row 1 data",
"row 2 data"
],
weak_sent_num: [1,2]
}
function generate_table() {
// get the reference for the body
var body = document.getElementsByTagName("body")[0];
// creates a <table> element and a <tbody> element
var tbl = document.createElement("table");
//var header = document.createElement("header");
// var header = '<tr><th>Country</th><th>City</th></tr>';
var header= document.createElement('thead')
var headingRow = document.createElement('tr')
var headingCell1 = document.createElement('td')
var headingText1 = document.createTextNode('country')
headingCell1.appendChild(headingText1)
headingRow.appendChild(headingCell1)
var headingCell2 = document.createElement('td')
var headingText2 = document.createTextNode('City')
headingCell2.appendChild(headingText2)
headingRow.appendChild(headingCell2)
header.appendChild(headingRow)
tbl.appendChild(header)
//var header = "<th>Header</th>";
var tblBody = document.createElement("tbody");
// creating all cells
for (var i = 0; i < results.weak_sent.length; i++) {
// creates a table row
var row = document.createElement("tr");
for (var j = 0; j < 2; j++) {
// Create a <td> element and a text node, make the text
// node the contents of the <td>, and put the <td> at
// the end of the table row
var cell = document.createElement("td");
if (j == 0) {
var cellText = document.createTextNode(results.weak_sent_num[i]);
} else {
var cellText = document.createTextNode(results.weak_sent[i]);
}
cell.appendChild(cellText);
row.appendChild(cell);
}
// add the row to the end of the table body
tblBody.appendChild(row);
}
// This is for the quick solution
// tbl.innerHTML = header
// put the <tbody> in the <table>
tbl.appendChild(tblBody);
// appends <table> into <body>
body.appendChild(tbl);
// sets the border attribute of tbl to 2;
tbl.setAttribute("border", "2");
}
generate_table()解决方案 2作为快速解决方案，您可以使用 innerHTML 属性，如下所示.
Solution2 As a quick solution you can use innerHTML property, as shown below.
results = {
weak_sent: [
"row 1 data",
"row 2 data"
],
weak_sent_num: [1,2]
}
function generate_table() {
// get the reference for the body
var body = document.getElementsByTagName("body")[0];
// creates a <table> element and a <tbody> element
var tbl = document.createElement("table");
//var header = document.createElement("header");
var header = '<tr><th>Country</th><th>City</th></tr>';
//var header = "<th>Header</th>";
var tblBody = document.createElement("tbody");
// creating all cells
for (var i = 0; i < results.weak_sent.length; i++) {
// creates a table row
var row = document.createElement("tr");
for (var j = 0; j < 2; j++) {
// Create a <td> element and a text node, make the text
// node the contents of the <td>, and put the <td> at
// the end of the table row
var cell = document.createElement("td");
if (j == 0) {
var cellText = document.createTextNode(results.weak_sent_num[i]);
} else {
var cellText = document.createTextNode(results.weak_sent[i]);
}
cell.appendChild(cellText);
row.appendChild(cell);
}
// add the row to the end of the table body
tblBody.appendChild(row);
}
// This is for the quick solution
tbl.innerHTML = header
// put the <tbody> in the <table>
tbl.appendChild(tblBody);
// appends <table> into <body>
body.appendChild(tbl);
// sets the border attribute of tbl to 2;
tbl.setAttribute("border", "2");
}
generate_table()这篇关于在javascript中为动态表添加表头的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！
