jquery read only css

jQuery is a JavaScript framework widely used in Web front-end development. By using jQuery, we can easily operate HTML documents and achieve various dynamic effects. Among them, CSS is also an indispensable part of Web front-end development. When using jQuery, we often need to operate CSS.

Sometimes we need to set the CSS properties of certain elements to a read-only state. Usually we can use the attribute readonly attribute (readonly) to achieve this purpose, but this method only applies to some Specific form elements. So, how can we set a CSS property to read-only status through jQuery without changing any HTML structure or CSS styles?

In jQuery, you can perform CSS read-only operations on certain elements by adding an attribute selector. For example, we can use the following code to achieve read-only text boxes:

$("input[type='text']").css("pointer-events", "none");

The meaning of this code is to get all input elements of type text, and then set their pointer-events attribute to none, so that the text box can be read-only.

Similarly, we can also set other CSS properties to read-only status. For example, we can set the background color to read-only:

$(".readonly").css("background-color", "#F7F7F7");
$(".readonly").css("pointer-events", "none");

The meaning of this code is to get all classes As readonly elements, then set their background color to gray and set their pointer-events attribute to none, so that read-only operations on the CSS properties of these elements can be achieved.

Of course, we can also use the prop() method provided by jQuery to implement read-only operations on CSS properties. For example, we can set the readonly attribute of an input element to true to achieve the read-only state of the element:

$("input[type='text']").prop("readonly", true);

The meaning of this code is to obtain all input elements of type text, and then Their readonly attribute is set to true, so that read-only operations on these elements can be achieved.

In short, by using jQuery, we can easily implement read-only operations on CSS properties, with good compatibility and flexibility. No matter what the scenario is, we can effectively control the CSS of the page through simple programming.

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