js solution to disabled problem in web form submission_javascript skills

The example in this article describes the js solution to the disabled problem in web form submission. Share it with everyone for your reference. The specific analysis is as follows:

For example, there is the following form

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When we submit the form, the pname data cannot be obtained in the background because the attribute of the input box is disabled. The value can be saved and the user cannot input this function. There are the following solutions:

1. Change the disabled="disabled" attribute to readonly="readonly" instead. Its function is basically the same. Readonly can also support onfocus events. (Recommended)

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2. Use js to modify the disabled attribute when submitting the form

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3. Get the value of pname using js, pass it in parameter form, and modify the action value of the form. Of course, this requires modifying the background code to obtain the parameter (getParameter);

Copy code The code is as follows:

A little suggestion: When we write scripting languages, we are generally keen on writing in jQuery because it is very concise. jQuery encapsulates javascript. When getting the equivalent value of HTML, use regular expression matching to obtain it,
Therefore, efficiency will inevitably be affected, so it is recommended that you generally use JavaScript when there are a large number of scripts.

I hope this article will be helpful to everyone’s JavaScript programming design.