the landlord has encountered a problem. The project is relatively old, and most of the code uses inline js to operate.
but encountered a problem about form submission, involving more pages, not easy to change!
questions
forms interact with each other using inline js onclick= "submit ()", and the code uses
document.form1.submit(); // how can I use js to listen for the submit event of this form form in such a situation? Or other solutions!
Thank you
try this?
onclick= "fu ()"; function fu () {your code.; submit ()}
according to the standard form.submit is the last means of submission, there is no event capture in the middle, the normal method is
1, the button responds to the button operation, call form.submit in the function (example below)
2, add the onsubmit, button for form to use input:submit to submit the form (example)
abnormal method, overload the submit method of form, call the click method of the submit button to submit. (example below)
idesubmit" rel=" nofollow noreferrer "> http://js.do/code/overridesubmit
harvest:
Native methods can also be overridden!
the code is as follows:
<form name='form1' id=form1 method='post' action='http://www.baidu.com'>
<input type=text name='n' value=1 >
<input type=button onclick='submit()' name='n' value='test'>
<input style='display:none' type=submit id='post'>
</form>
<script>
form1.submit=function(){let oldsubmit=this.submit;alert(oldsubmit);post.click()}
</script>
<form name='form2' id=form1 method='post' action='http://www.baidu.com'>
<input type=text name='n' value=1 >
<input type=button onclick='btnclick()' name='n' value='test'>
</form>
<script>
function btnclick(){
alert('do something');
form2.submit();
}
</script>
Previous: How does D3.js request data from the background?
Next: There is no refresh switching page on the mobile side.
The horizontal coordinates of echarts are not specifically marked, and the X coordinates do not have a grid to indicate. Here is a figure that specifies . js * * createChartSix() { this.$http .get(this.$api.dataChart) .then(rsp => { ...
sincerely ask for advice: < hr > I want to use node as the background to build a video streaming server. The front end is similar to Youku VOD. It can record the playback node function, and load the progress bar at any point (starting from the c...
I need to implement in a chained promise function, any function error in the middle terminates the program, and can catch the error function, and then perform different operations according to different error functions. How can the following code be imp...
I would like to ask what is wrong with this code. Thank you for your answers. ...
is doing a question on Niuke.com. I encounter a problem: to achieve the function callIt, after the call meets the following conditions 1, the returned result is the result after calling fn 2, and the call parameter of fn is all the parameters after th...
A timing examination system is triggered if the click event is triggered within 5 seconds, and if it is not triggered, the system marks the correct answer at the end of the countdown. How to implement ...
description: a regular match is given to the content of an input box, and the matching content is the product activation code. looks like this: "0C31-0B81-BB32-3094-0C31-0B81-BB32-3094 " Code: $( -sharplicenseCode ).keyup(function () { le...
1. The custom event triggers the click event of .cpcstartrefresh, but triggers 2 click events each time 2. The code is as follows: window.onmessage = function (e) { create an event object, var myEvent = document.createEvent( Event ); m...
I configured the MIME type of the file with the amr suffix in the apache configuration as application ms-download, Why it is a garbled page when opening a file in amr format using window.open in chrome, while a file in amr format can be successfully dow...
I got a set of data, which is to choose the type of question. How can I tell if I have chosen the right one answera: "Olympic Games " answerb: "Asian Games " answerc: "Paralympic Games " answerd: "University Games " id: "1772 " question: "f...
read a number, such as 521 change this number to 0521 but put it into four div separately, how to realize it? 0 < div > 5 < div > 2 < div > 1 < div > ...
react projects cannot save store? using redux, data index.js ReactDOM.render( <Provider store={store}> <Router > < Provider>, document.getElementById( root )) registerServiceWorker() actions export const SET_USER = ...
how to find all the NA characters in a HMLT page and replace it with "and invalid " with native JS ...
...
suppose there are only a.js and b.js (only two js and nothing else) b.js export A variable is used for a.js can you directly use import and export without using packaging and compilation tools such as webpack or babel can it be achieved with the h...
do the gods have plug-ins for uploading attachments in the mobile version that can also be uploaded more than one? ...
what does the code circled in the following picture mean? ...
I look at a html ui project with items such as: var apiserver = window[ apiserver ]; url = apiserver + "filterUrlController getUrlData"; I searched the whole project and couldn t find the value of window [ apiserver ]. How do you un...
In the vue-cli project, I directly introduced the particls library into index.html, and the related files are placed in the static directory . <div id="particles-js">< div> <script type="text javascript" src="s...
How does the code return only the result after the last asynchronous operation in the for loop is completed as shown in the figure? Please stop by and give me a hand. ...