[英]Displaying 2d Array onto a table? Javascript
I am creating a 2d array with user input. 我正在用用户输入创建一个二维数组。 How can I display the input on to a 3 by 3 table?
如何在3 x 3的表格上显示输入?
<script language = javascript>
var b = [];
for(var i=0; i<3; i++){
b[i] = [];
for(var j=0; j<3; j++){
b[i][j] = window.prompt("b["+(i+1)+","+(j+1)+"] = ?");
}
}
</script>
</head>
<body>
<table width="80%" border="2" cellspacing="0" cellpadding="0">
<tr>
<td> </td>
<td> </td>
<td> </td>
</tr>
<tr>
<td> </td>
<td> </td>
<td> </td>
</tr>
You can do something like this.. 你可以做这样的事情。
<!DOCTYPE html>
<html>
<head>
<style>
table {
font: 11px/24px Verdana, Arial, Helvetica, sans-serif;
border-collapse: collapse;
width: 320px;
}
td {
border: 1px solid #CCC;
padding: 0 0.5em;
}
</style>
<script src="http://ajax.googleapis.com/ajax/libs/jquery/1.10.2/jquery.min.js">
</script>
<script>
$(document).ready(function(){
$("#myRandomizeBtn").bind("click",randomizeHandler);
function randomizeHandler(evt){
var root=document.getElementById('mydiv');
var tab=document.createElement('table');
tab.className="mytable";
var tbo=document.createElement('tbody');
var row, cell;
var n = 3;
var data;
for (i=0; i<n; i++)
{
row=document.createElement('tr');
for(var j=0;j<n;j++){
cell=document.createElement('td');
data =window.prompt("b["+(i+1)+","+(j+1)+"] = ?");
cell.appendChild(document.createTextNode(data));
row.appendChild(cell);
}
tbo.appendChild(row);
}
tab.appendChild(tbo);
root.appendChild(tab);
}
});
</script>
</head>
<body>
<div id='mydiv'></div>
<button id = "myRandomizeBtn">Randomize</button>
</body></html>
You can use following code to traverse and push value 您可以使用以下代码遍历和推送值
var table = document.getElementById("mytab1");
for (var i = 0, row; row = table.rows[i]; i++) {
//iterate through rows
//rows would be accessed using the "row" variable assigned in the for loop
for (var j = 0, col; col = row.cells[j]; j++) {
//iterate through columns
//columns would be accessed using the "col" variable assigned in the for loop
col.innerText = b[i][j]; //Set your value here
}
}
Reference for Traversing from @John Hartsock answer at How do I iterate through table rows and cells in javascript? 来自@John Hartsock的遍历参考答案为: 如何遍历javascript中的表行和单元格?
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