onsubmit

Input values lost when form submitted with errors

由 血红的双手。 提交于 2020-01-23 16:57:12
问题 My form is working fine with the validations being done by PHP. I have three fields: Name, EMail and Message. Form and PHP code is within the same pgae, same page is called for validations when user submits the form. When a user submits the form, same page is called and it checks whether the form is submitted or not. If the form is submitted it then does the validations for blank entries and throws error message below the fields to inform user that field is left blank. It also shows error

JavaScript form onSubmit handling

由 三世轮回 提交于 2020-01-05 04:50:44
问题 I am new to JavaScript and have been searching the threads here but can't figure out why my forms are not running through the validation properly. I have tried adding alerts to find the issue, and it seems like it is somewhere around the first IF statement. Any ideas? Thanks! <script type="text/javascript"> function dataCheck() { var firstName = document.getElementById("firstName").value; var firstName = document.myForm.firstName.value; var lastName = document.getElementById("lastName").value

onClick event doesn't work inside form tag

由 落爺英雄遲暮 提交于 2020-01-02 03:37:13
问题 <!DOCTYPE html> <html> <head> </head> <script> function removeP2() { var parent = document.getElementById("section"); var child = document.getElementById("p2"); parent.removeChild(child); } </script> <body> <nav> <form> <button onclick="removeP2();">Remove</button> </form> </nav> <section id="section"> <p id="p1">Paragraph One.</p> <p id="p2">Paragraph Two.</p> </section> </body> </html> When I click the submit button, the function executes as usual, but after the function executes, the page

Only want a link to be able to be clicked once

由 给你一囗甜甜゛ 提交于 2019-12-31 07:25:07
问题 I have a link that opens a new page and I was wondering if there was a way that would make the link only click-able once so the form cannot be submitted numerous times. <div id="addSection"><a class="addSection" onclick="javascript:writeBookmark(this); var newwin = window.open('<c:url value="/URL_WINDOW"/>', 'additional', 'width=400,height=280,toolbar=no,,menubar=no,scrollbars=yes,resizeable=no'); newwin.focus(); return null;">       Add sub I have JavaScript to do this with buttons but not

add or subtract functions from onSubmit event handler?

由 假如想象 提交于 2019-12-29 09:02:11
问题 I have the following code: function showAddrBox() { var prompt = document.getElementById('addr_prompt'); prompt.style.display = 'block'; document.generic_form.address.style.display = 'block'; document.generic_form.onsubmit = validateAddrForm; } function hideAddrBox() { var prompt = document.getElementById('addr_prompt'); prompt.style.display = 'none'; document.generic_form.address.style.display = 'none'; document.generic_form.onsubmit = null; } The problem is that sometimes I have additional

Post form into dialog window by clicking a link

由 耗尽温柔 提交于 2019-12-25 08:15:04
问题 I'm trying to make this piece of code work. <form name="myform" onsubmit="alert('1');"> </form> <a href="javascript: void(0);" onclick="document.myform.submit();">ok</a> However nothing happens when I click "ok". Where have I mistaken? 回答1: The browser does not trigger the onsubmit event if you call the submit method programmatically. Therefore, if the form is using the form validator script, call the onsubmit method also to trigger the validation. http://www.javascript-coder.com/javascript

How can I conditionally prevent a form from submitting with server-side/code-behind?

由 血红的双手。 提交于 2019-12-24 13:32:10
问题 When my "submit" (Save) button is clicked, one thing it does is verifies that the two "totals" vals match, and returns if they don't, fingerwagging the user with a red 'bad boy!' message: message = new LiteralControl(); AddVerticalSpace(); Controls.Add(message); decimal? paymentTot = TryConvertToDecimal(boxPaymentAmount.Text); if ((null == paymentTot) || (paymentTot < 0)) { paymentTot = 0M; } decimal? grandTot = TryConvertToDecimal(boxGrandTotal.Text); if ((null == grandTot) || (grandTot < 0)

Replace line-breaks by spaces using javascript

由 旧时模样 提交于 2019-12-23 21:26:58
问题 I want to see if it's possible to block the enter key and replace it with a space. I'm also using form validation to only allow letters, numbers and some other specific characters like the dollar sign,minus, and period and so on. Here is that code, I would like to see if I can combine them into one and be able to check for the validation and replace the key press with a space all in one code/call. <script type="text/javascript"> function ValidateForm(form) { var str str=document

pass javascript variables to form/input fields as onsubmit href link

由 寵の児 提交于 2019-12-23 16:34:32
问题 id like to have an input box that a user can enter a search term into that gets passed to maybe a javascript function that then combines some url segments with the search term creating a full url. up until now its been working fine without a form around it, but i would like to add a form to it so users can just hit enter rather than clicking a submit button. submit button code: <a href="javascript: void(0)" onClick="this.href = i1 + document.getElementById('intranet').value + i3" target="

Display jQuery dialog onSubmit while HTML form is processing

由 ╄→гoц情女王★ 提交于 2019-12-23 14:03:26
问题 I have an HTML form that allows a user to add an attachment up to X MB. Because connection speeds for users vary, I would like to show a dialog that says something along the lines of "Your request is processing. Do not navigate away from this page. This dialog will close when the form is submitted successfully". Not verbatim but similar. The form posts to itself and is processed with PHP. I am not looking for a progress bar or anything. Just a friendly alert. I have been looking at the jQuery
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