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- Question: an invalid form control with name
- Time: Asked 35 days ago
- Modified: Updated 102 hours ago
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an invalid form control with name
An “invalid form control with name” error message typically occurs when you’re working with web forms and one of the input fields has an invalid value or is missing a required attribute.
To resolve this error, you can try the following steps:
-
Check the form controls: Ensure that each form control has a unique “name” attribute and that it matches the name of the corresponding input field.
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Verify input values: Make sure that the input values meet the specified requirements, such as being in the correct format, within a valid range, and matching any validation rules or patterns.
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Check required fields: Ensure that any required input fields have the “required” attribute set, so that the user cannot submit the form without completing these fields.
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Use the developer console: Use the developer console in your web browser to inspect the HTML code and look for any syntax errors or missing attributes.
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Test on multiple
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HTML : An invalid form control with name=” is not focusable. WITHOUT ANY REQUIRED OR HIDDEN INPUTS
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![An Invalid Form Control With Name='Exposed_Form_Options[Reset_Button_Label]' Is Not Focusable. [#3160486] | Drupal.Org](https://dongtienvietnam.com/wp-content/uploads/2023/03/Desktop_screenshot.png)
![An Invalid Form Control With Name='Recipe[Content]' Is Not Focusable. · Issue #3697 · Summernote/Summernote · Github](https://dongtienvietnam.com/wp-content/uploads/2023/03/80308652-7723be80-87d0-11ea-9861-58d25320fae8.png)
jQuery prevent form submit
To prevent a form from submitting using jQuery, you can use the preventDefault()
method to stop the default action of the form submission. Here’s an example:
HTML code:
python<form id="myForm" action="submit.php" method="POST"> <input type="text" name="name"> <input type="submit" value="Submit"> </form>
jQuery code:
javascript$(document).ready(function(){ $("#myForm").submit(function(event){ event.preventDefault(); // Prevent form submission // Do your validation or processing here }); });
In this example, when the form is submitted, the submit()
method of jQuery is used to bind a function to the submit event of the form. Within the function, preventDefault()
is called to prevent the form from submitting. Then, you can add your own validation or processing logic.
HTML5 validate
HTML5 introduced a built-in validation feature that allows developers to validate user input in forms without the need for JavaScript or server-side code. The validation is performed by the browser itself, making it faster and more efficient. Here are some of the ways to use HTML5’s validation feature:
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Required attribute: You can use the “required” attribute on form elements to ensure that the user provides a value before submitting the form. For example, <input type=”text” name=”fullname” required>
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Pattern attribute: You can use the “pattern” attribute to define a regular expression pattern that the user’s input must match. For example, <input type=”text” name=”zipcode” pattern=”[0-9]{5}”>
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Min and Max attributes: You can use the “min” and “max” attributes to define a range of valid values for input fields. For example, <input type=”number” name=”age” min=”18″ max=”100″>
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Email and URL input types: HTML5 provides input types specifically for email and URL fields, which perform basic validation on user input. For example, <input type=”email” name=”email”>
-
Custom validation: You can use the “setCustomValidity()” method in JavaScript to define custom validation messages for input fields. For example, <input type=”text” name=”password” oninput=”setCustomValidity(‘Password must be at least 8 characters long’)” minlength=”8″>
Note that while HTML5’s validation feature can be useful for basic form validation, it is not a replacement for server-side validation, which is still necessary to ensure the security and integrity of user data.
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