用DOM动态创建表 [英] Dynamic creation of table with DOM
本文介绍了用DOM动态创建表的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!
问题描述
var tablearea = document.getElementById('tablearea');
var table = document.createElement('table');
var tr = [];
var td1 = document.createElement('td');
var td2 = document.createElement('td');
var text1 = document.createTextNode('Text1');
var text2 = document.createTextNode('Text2'); (var i = 1; i< 4; i ++){
tr [i] = document.createElement('tr');
for(var j = 1; j< 4; j ++){
td1.appendChild(text1);
td2.appendChild(text2);
tr [i] .appendChild(td1);
tr [i] .appendChild(td2);
}
table.appendChild(tr [i]);
}
tablearea.appendChild(table);
解决方案
您必须在循环中创建td和文本节点。您的代码仅创建2 td,因此只有2个可见。示例:
var table = document.createElement('table'); (var i = 1; i< 4; i ++)
{
var tr = document.createElement('tr');
var td1 = document.createElement('td');
var td2 = document.createElement('td');
var text1 = document.createTextNode('Text1');
var text2 = document.createTextNode('Text2');
td1.appendChild(text1);
td2.appendChild(text2);
tr.appendChild(td1);
tr.appendChild(td2);
table.appendChild(tr);
}
document.body.appendChild(table);
Can someone tell me what's wrong with this code? I want to create a table with 2 columns and 3 rows, and in the cells I want Text1 and Text2 on every row. This code creates a table with 2 columns and 3 rows, but it's only text in the cells in the third row (the others are empty).
var tablearea = document.getElementById('tablearea');
var table = document.createElement('table');
var tr = [];
var td1 = document.createElement('td');
var td2 = document.createElement('td');
var text1 = document.createTextNode('Text1');
var text2 = document.createTextNode('Text2');
for (var i = 1; i < 4; i++){
tr[i] = document.createElement('tr');
for (var j = 1; j < 4; j++){
td1.appendChild(text1);
td2.appendChild(text2);
tr[i].appendChild(td1);
tr[i].appendChild(td2);
}
table.appendChild(tr[i]);
}
tablearea.appendChild(table);
解决方案
You must create td and text nodes within loop. Your code creates only 2 td, so only 2 are visible. Example:
var table = document.createElement('table');
for (var i = 1; i < 4; i++){
var tr = document.createElement('tr');
var td1 = document.createElement('td');
var td2 = document.createElement('td');
var text1 = document.createTextNode('Text1');
var text2 = document.createTextNode('Text2');
td1.appendChild(text1);
td2.appendChild(text2);
tr.appendChild(td1);
tr.appendChild(td2);
table.appendChild(tr);
}
document.body.appendChild(table);
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