Tag:readonly

  • Difference between HTML readonly and enabled

    Time:2021-12-21

    The textbox of readonly attribute will be displayed as such a mark on the client: < input readonly = “readonly” > The textbox of enabled attribute will be displayed as such a mark on the client: < input disabled = “disabled” > The HTML server control uses a class derived from the htmlcontrol base class […]

  • The difference between readonly and disabled

    Time:2021-11-22

    The summary is as follows:Readonly is valid only for input (text / password) and textarea, while disabled is valid for all form elements, including select, radio, checkbox, button, etc. However, after the form element is disabled, when we submit the form in the form of post or get, the value of this element will not […]

  • Comparison of form element attributes readonly and disabled

    Time:2020-11-20

    1) Scope of application: readonly:input[type=”text”],input[type=”password”],input[type=”teaxtarea”] Disabled: all form elements, such as select, radio, check box, button, etc 2) Operation: Readonly: the user is not allowed to modify the operation and does not affect any other operationDisabled: prevent users from doing everything, including clicking events and getting focus events 3) Form submission: Readonly: the values of […]

  • HTML form control disable property readonly vs disabled

    Time:2020-10-9

    There are two ways to disable form submission in HTML 1. Addreadonly=’readonly’Properties 2. Adddisabled=’disabled’Properties For example: <input type=”text” value=”” readonly=”readonly” /> <input type=”text” value=”” disabled=”disabled” /> Both controls in the example are not modifiable. But they also have some differences! From the literal meaning, we can see that the control that tries the readonly property […]

  • How to use the HTML form attributes readonly and disabled

    Time:2020-7-2

    1. Readonly read-only property, so that you can get the value value 2. Disabled invalid attribute. Value value cannot be obtained

  • Comparison of const and readonly in C

    Time:2020-4-4

    Const constant There are two advantages in creating const constants. The first is that const constants are easier to read and modify than numbers because of the use of meaningful names. The second is that the editor ensures that its values remain fixed during program operation. Compared with variables, const constants are more robust The […]

  • A detailed explanation of the slight difference between readonly and disabled

    Time:2020-2-27

    Both readonly and disabled enable users not to change the contents of form fields. But there are small differences between them, which are summarized as follows: Readonly only for input (text/ Password) and textarea are valid, while disabled is valid for all form elements. However, when the form element is submitted in post or get […]

  • Introduction to the specific usage of the disabled and readonly attributes of textarea

    Time:2020-1-5

    The disabled property indicates a disabled text area in which the content cannot be modified and the value cannot be passed in the request. The readonly property specifies that the text area is read-only. Content cannot be modified in a read-only text area. Values can be passed in the request. The specific usage is as […]

  • How to make select support readonly

    Time:2019-12-26

    Copy code The code is as follows: <span style=”font-family:Microsoft YaHei;”><select onfocus=”this.defaultIndex=this.selectedIndex;” onchange=”this.selectedIndex=this.defaultIndex;”> <option value=”1″>test1</option> <option value=”2″>test2</option> <option value=”3″ selected=”selected”>test3</option> <option value=”4″>test4</option> <option value=”5″>test5</option> </select> </span> 1》 Set the readonly property of the formProblem: but the readonly property has no effect on the three forms: Radio, select and checkbox 2》 Set the disabled property of the […]

  • Two ways to disable form control in HTML readonly and disabled

    Time:2019-11-20

    In the process of making web pages, we often use forms. But sometimes we want the controls on the form to be immutable. For example, in the password changing web page, the text box displaying the user name should be immutable. There are two ways to disable HTML, which are: 1. Add readonly = readonly […]

  • The function and difference of disabled and readonly

    Time:2019-10-28

    1: readonly is to lock this control. You cannot modify it through the interface (but you can modify it through JavaScript). 2: disabled and readonly have the same thing. You can also lock this control. The user can’t change its value, but disabled is more thorough. It means that you can’t use it at all, […]

  • Talking about the difference between input read-only attribute readonly and disable in HTML

    Time:2019-7-30

    Readonly and Disabled are both able to make it impossible for users to change content in form fields. But there are slight differences between them, which can be summarized as follows: Readonly is valid for input (text / password) and textarea, while disabled is valid for all form elements, but when disabled is used, when […]