javascript table show only first n rows

Javascript Table Show Only First N Rows

If you want to show only the first N rows of a table in Javascript, there are a few ways to do it. Here are a few methods:

Method 1: Using the Slice() Method

One way to show only the first N rows of a table is to use the slice() method to create a new array with only the first N elements of the original array, and then create a new table with only those rows.

let table = document.getElementById("myTable");
let rows = table.getElementsByTagName("tr");
let n = 5; // show only the first 5 rows

// Create a new array with only the first N rows
let slicedRows = Array.prototype.slice.call(rows, 0, n);

// Create a new table with only the sliced rows
let newTable = document.createElement("table");
let newBody = document.createElement("tbody");

for (let i = 0; i < slicedRows.length; i++) {
  newBody.appendChild(slicedRows[i]);
}

newTable.appendChild(newBody);
document.getElementById("tableDiv").appendChild(newTable);

In this example, we first get the table element and all its rows using the getElementById() and getElementsByTagName() methods. Then we specify how many rows we want to show (in this case, 5). We then use the slice() method to create a new array with only the first 5 elements of the rows array. Next, we create a new table element and a new tbody element, and loop through the slicedRows array to append each row to the newBody element. Finally, we append the new table to a div element with an id of "tableDiv".

Method 2: Using the LimitTo() Filter

If you are using AngularJS, you can use the built-in limitTo() filter to show only the first N rows of a table. Here's how:

<table>
    <tr ng-repeat="row in rows | limitTo:5">
        <td>{{row.name}}</td>
        <td>{{row.age}}</td>
        <td>{{row.gender}}</td>
    </tr>
</table>

In this example, we use the ng-repeat directive to loop through an array of rows, and apply the limitTo filter to show only the first 5 rows. The syntax for the limitTo filter is "limitTo:N", where N is the number of elements to show.

Method 3: Using CSS

Finally, you can also use CSS to hide all but the first N rows of a table. Here's how:

tr:nth-child(n+6) {
    display:none;
}

In this example, we use the nth-child selector to select all rows starting from the 6th row (i.e., all rows except the first 5), and set their display property to "none" to hide them. Note that this method does not remove the hidden rows from the DOM, so it may not be the best option if you have a large table with many rows.