javascript - How to change background color of a single row inside a table with DOM

Javascript - How to change background color of a single row inside a table with DOM

You can change the background color of a single row inside a table using the DOM by selecting the row and setting its style.backgroundColor property. Here's how you can do it:

<table id="myTable"> <tr> <td>Row 1, Cell 1</td> <td>Row 1, Cell 2</td> </tr> <tr> <td>Row 2, Cell 1</td> <td>Row 2, Cell 2</td> </tr> <tr> <td>Row 3, Cell 1</td> <td>Row 3, Cell 2</td> </tr> </table> <script> // Select the table row by its index (zero-based) const rowIndex = 1; // For example, change the background color of the second row const table = document.getElementById('myTable'); const rows = table.getElementsByTagName('tr'); const row = rows[rowIndex]; // Change the background color of the selected row row.style.backgroundColor = 'lightblue'; </script>

In this example, we select the table row by its index (zero-based) using document.getElementById('myTable').getElementsByTagName('tr')[rowIndex]. Then, we set its style.backgroundColor property to change the background color to 'lightblue'. Adjust the rowIndex variable to select the desired row.

Examples

  1. "Change background color of specific table row JavaScript"

    • Description: This query seeks methods to dynamically change the background color of a single row within an HTML table using JavaScript.
    • Code:
      var rowId = "row1"; // ID of the row to change background color var color = "yellow"; // Desired background color document.getElementById(rowId).style.backgroundColor = color;

  2. "JavaScript change table row background color dynamically"

    • Description: This query aims to dynamically change the background color of a table row in response to a user action or some condition using JavaScript.
    • Code:
      function changeRowColor(rowId, color) { document.getElementById(rowId).style.backgroundColor = color; } // Usage: changeRowColor("row1", "yellow");

  3. "Modify table row background color with JavaScript"

    • Description: This query looks for JavaScript code to modify the background color of a specific row in an HTML table dynamically.
    • Code:
      var rowIndex = 2; // Index of the row to change background color var color = "lightblue"; // Desired background color document.getElementsByTagName("tr")[rowIndex].style.backgroundColor = color;

  4. "How to dynamically change table row background color using JavaScript"

    • Description: This query seeks guidance on dynamically changing the background color of a particular row within an HTML table using JavaScript.
    • Code:
      var table = document.getElementById("myTable"); var rowIndex = 1; // Index of the row to change background color var color = "lightgreen"; // Desired background color table.rows[rowIndex].style.backgroundColor = color;

  5. "JavaScript set background color of specific table row"

    • Description: This query focuses on setting the background color of a specific row in an HTML table using JavaScript.
    • Code:
      var rowIndex = 3; // Index of the row to change background color var color = "lightgrey"; // Desired background color document.querySelector("table tr:nth-child(" + rowIndex + ")").style.backgroundColor = color;

  6. "Change table row background color with JavaScript by ID"

    • Description: This query looks for JavaScript code to change the background color of a specific table row identified by its ID.
    • Code:
      var rowId = "row2"; // ID of the row to change background color var color = "lightpink"; // Desired background color document.getElementById(rowId).style.backgroundColor = color;

  7. "JavaScript change background color of table row by class"

    • Description: This query seeks methods to change the background color of a table row by targeting its class using JavaScript.
    • Code:
      var className = "highlight"; // Class name of the row to change background color var color = "lightcoral"; // Desired background color var rows = document.getElementsByClassName(className); for (var i = 0; i < rows.length; i++) { rows[i].style.backgroundColor = color; }

  8. "Dynamically set background color for HTML table row JavaScript"

    • Description: This query looks for JavaScript code to dynamically set the background color of a specific row within an HTML table.
    • Code:
      var rowIndex = 4; // Index of the row to change background color var color = "lightyellow"; // Desired background color document.querySelector("table tr:nth-child(" + rowIndex + ")").style.backgroundColor = color;

  9. "JavaScript change background color of table row on click"

    • Description: This query aims to change the background color of a table row when clicked using JavaScript.
    • Code:
      document.getElementById("myTable").addEventListener("click", function(event) { if (event.target.tagName === "TR") { event.target.style.backgroundColor = "lightcyan"; } });

  10. "Change background color of table row in JavaScript based on condition"

    • Description: This query looks for JavaScript code to change the background color of a table row based on a certain condition.
    • Code:
      var rowIndex = 2; // Index of the row to change background color var conditionMet = true; // Example condition var color = conditionMet ? "lightgreen" : "transparent"; document.querySelector("table tr:nth-child(" + rowIndex + ")").style.backgroundColor = color;

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