jQuery Read-Only Input Field

Easy to control read-only properties of input fields with jQuery

This article describes how to use simple jQuery code snippets to control the read-only properties of the input field so that it is not editable or restored to the editable state.

Set read-only attributes:

The following code uses jQuery's attr() method to set the input field to read-only:

$('input').attr('readonly', true);

Cancel read-only attribute:

Use the removeAttr() method to cancel the read-only attribute of the input field:

$('input').removeAttr('readonly');

Remember to put the jQuery code in the $(document).ready() function to ensure that the DOM is loaded before executing it.

FAQs:

• How to set the input field to read-only using jQuery? Use attr("readonly", true) method. For example: $("input").attr("readonly", true); This will make all input fields read-only.

• How to switch read-only attributes in jQuery? Use prop() Method:

$("button").click(function(){
  $("input").prop("readonly", function(i, val){ return !val; });
});

Click the button to switch the read-only state of all input fields.

• The difference between

  and attr() methods in jQuery? prop() Get the attribute value, attr() Get the attribute value. prop() Set or change attributes, attr() Set or change attribute values. In short, for Boolean properties, prop() is more appropriate. prop()

• How to use jQuery to remove read-only properties of input fields? Use method. For example: removeAttr("readonly") This will restore all input fields to editable. $("input").removeAttr("readonly");

• How to set read-only properties for specific input fields only? Select a specific input field through the ID or class selector. For example: This will make the input field with ID "myInput" read-only. $("#myInput").attr("readonly", true);

• What form elements can read-only attributes be used for? The attributes can be used for readonly and <input> elements, but are not applicable to <textarea></textarea> or <select></select> elements. <option></option>

• What is the difference between the attribute and the attribute? The readonly disabled property allows the user to select and focus input fields, but cannot modify its value; while the property completely disables the input fields and the user cannot interact with it. readonly disabled

• How to style the read-only input field?

  pseudo-class using CSS. For example: This will make the background color of the read-only input field gray.

• How to set the read-only properties of the input field according to the conditions? Use the if statement to determine the conditions, and then use the attr() method to set the readonly attribute.

• readonly Are attributes suitable for input types other than text? readonly The attribute is suitable for a variety of input types, such as password, search, tel, url, email, number, radio, checkbox, file, range, color, button,

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