forms
React.js setting value of input
For React 16, use following code. Check this issue. function setNativeValue(element, value) { let lastValue = element.value; element.value = value; let event = new Event(“input”, { target: element, bubbles: true }); // React 15 event.simulated = true; // React 16 let tracker = element._valueTracker; if (tracker) { tracker.setValue(lastValue); } element.dispatchEvent(event); } var input = document.getElementById(“ID … Read more
Angular 5 file upload: Failed to set the ‘value’ property on ‘HTMLInputElement’
In my case I just removed the formControlName: <input type=”file” (change)=”onFileChange($event)”> And .ts: onFileChange(event) { const reader = new FileReader(); if (event.target.files && event.target.files.length) { const [file] = event.target.files; reader.readAsDataURL(file); reader.onload = () => { this.data.parentForm.patchValue({ tso: reader.result }); // need to run CD since file load runs outside of zone this.cd.markForCheck(); }; } }
Contact us functionality in Rails 3
This tutorial is an excellent example – and it’s Rails 3 Update: This article is a better example than the one I posted earlier, works flawlessly Second Update: I would also recommend merging-in some of the techniques outlined in this railscast on the active_attr gem, where Ryan Bates walks you through the process of setting … Read more
HTML: JavaScript: Block Form submission and call Javascript function
Add the onsubmit attribute to the form tag: <form name=”search” onsubmit=”return makeSearch()” > Name: <input type=”text” name=”name1″/> Age: <input type=”text” name=”age1″/> <input type=”submit” name=”Submit” value=”Submit”/> </form> And javascript add return false at the end: function makeSearch() { alert(“Code to make AJAX Call”); return false; }
How to open the second form?
You need to handle an event on Form1 that is raised as a result of user interaction. For example, if you have a “Settings” button that the user clicks in order to show the settings form (Form2), you should handle the Click event for that button: private void settingsButton_Click(Object sender, EventArgs e) { // Create … Read more
Rails: Submit button outside form_tag
While this question is old, I think it might be worth pointing out a better option that doesn’t rely on JavaScript. HTML5 introduced form as an attribute that can be applied to any form control and will bind it to a specific form based on its id – even if the control isn’t nested inside … Read more
jquery disable submit button on form submission
Your code is changing the submit action of the form. Instead of submitting, it changes the button attribute. Try this: $(‘input[type=submit]’).click(function() { $(this).attr(‘disabled’, ‘disabled’); $(this).parents(‘form’).submit(); });