Good day, the following code works on desktop but not mobile. When I switch to keyup or keydown instead of keypress it doesn't work anywhere.
function attribUppercase(e)
{
var charInput = e.keyCode;
if((charInput >= 97) && (charInput <= 122)) { // lowercase
if(!e.ctrlKey && !e.metaKey && !e.altKey) { // no modifier key
var newChar = charInput - 32;
var start = e.target.selectionStart;
var end = e.target.selectionEnd;
e.target.value = e.target.value.substring(0, start) + String.fromCharCode(newChar) + e.target.value.substring(end);
e.target.setSelectionRange(start+1, start+1);
e.preventDefault();
}
}
}
window.onload = function() {
var element = document.getElementById("attrib-108-0");
if(typeof(element) != 'undefined' && element != null){
document.getElementById("attrib-108-0").addEventListener("keypress", attribUppercase, false);
}
}
Related
document.addEventListener("keydown", (evt) => {
if (evt.keyCode >= 65 && evt.keyCode <= 90) {
let command = document.getElementById("cmdInput").textContent;
let str2 = command.substring(0, command.length - 1) + evt.key + "_";
console.log(str2);
document.getElementById("cmdInput").textContent = str2;
}
});
<div id="cmdInput">_</div>
As you can see, I get "_fg_" instead of "fg_". Why? Why isn't the leading underscore not moving as of my typing?
For example, you can start with a specific key and stop with a click or another key,
// Alt + Shift + ↓ Auto scroll
document.addEventListener("DOMContentLoaded", (l) => {
var m;
setInterval(m);
$(window).keydown((e) => {
//pattern 1
if (e.altKey && e.shiftKey && e.keyCode == 40) {
if (!m) {
m = setInterval((s) => {
scrollBy(0, s || 1);
}, 35);
}
}
$(document).on('click', () => {
clearInterval(m);
m = undefined;
});
//pattern 2
setInterval(m);
if (e.altKey && e.shiftKey && e.keyCode == 40) {
if (!m) {
m = setInterval((s) => {
scrollBy(0, s || 1);
}, 35);
}
}
if (e.keyCode == 96) { //ten key of「0」key
clearInterval(m);
m = undefined;
}
//}, false);
});
});
like this:
Attempting to process start and stop with the same key will not work.
In the example below
Start with Alt + Shift + ↓,
Stop as well
I want to do it with Alt + Shift + ↓. How can I correct it to implement the desired function?
The operating environment uses a third-party extension of the Chrome WEB store.
if i have understood what you want, you want to use the same keys to start and stop so, to do that you have to use a sort of toggle:
var timer;
var last_state = "keyup";
var param = 10;
$(window).on("keydown keyup", (e) => {
if (e.type == "keyup" && e.which == 40) {
last_state = "keyup";
}
if (e.type == "keydown" && e.type != last_state && e.altKey && e.shiftKey && e.which == 40) {
last_state = e.type;
if (!timer) {
timer = setInterval(() => {
scrollBy(0, param || 1);
}, 35);
} else {
clearInterval(timer);
timer = undefined;
}
}
});
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
I want to enter a "/" when user enters MM(2 digit) so it will be like MM/YYYY.
I have done similar for credit card number input which insert a space after 4 digit on keypress.
let ccNumber = e.target.value.split(" ").join("");
if (ccNumber.length > 0) {
ccNumber = ccNumber.match(new RegExp('.{1,4}', 'g')).join(" ");
}
e.target.value = ccNumber;
Fiddle
This works with
Regular keyboard input
Copy/Cut/Paste
Selected text
Adding the /
Because you're programmatically adding the / character, you have to update the cursor position whenever that affects the new input value. This can be more than one character if the user is pasting something. Most of the code complexity revolves around this issue.
There are a lot of comments in the code explaining the various situations that come up because of the /.
Full Code
var date = document.getElementById('date');
date.addEventListener('keypress', updateInput);
date.addEventListener('change', updateInput);
date.addEventListener('paste', updateInput);
date.addEventListener('keydown', removeText);
date.addEventListener('cut', removeText);
function updateInput(event) {
event.preventDefault();
var string = getString(event);
var selectionStart = this.selectionStart;
var selectionEnd = this.selectionEnd;
var selectionLength = selectionEnd - selectionStart;
var sanitizedString = string.replace(/[^0-9]+/g, '');
// Do nothing if nothing is added after sanitization
if (sanitizedString.length === 0) {
return;
}
// Only paste numbers that will fit
var valLength = date.value.replace(/[^0-9]+/g, '').length;
var availableSpace = 6 - valLength + selectionLength;
// If `/` is selected it should not count as available space
if (selectionStart <= 2 && selectionEnd >= 3) {
availableSpace -= 1;
}
// Remove numbers that don't fit
if (sanitizedString.length > availableSpace) {
sanitizedString = sanitizedString.substring(0, availableSpace);
}
var newCursorPosition = selectionEnd + sanitizedString.length - selectionLength;
// Add one to cursor position if a `/` gets inserted
if (selectionStart <= 2 && newCursorPosition >= 2) {
newCursorPosition += 1;
}
// Previous input value before current cursor position
var valueStart = date.value.substring(0, this.selectionStart);
// Previous input value after current cursor position
var valueEnd = date.value.substring(this.selectionEnd, date.value.length);
var proposedValue = valueStart + sanitizedString + valueEnd;
// Remove anything that's not a number
var sanitized = proposedValue.replace(/[^0-9]+/g, '');
format(sanitized);
this.setSelectionRange(newCursorPosition, newCursorPosition);
}
function removeText(event) {
if (event.key === 'Backspace' || event.type === 'cut') {
event.preventDefault();
var selectionStart = this.selectionStart;
var selectionEnd = this.selectionEnd;
var selectionLength = selectionEnd - selectionStart;
// If pressing backspace with no selected text
if (selectionLength === 0 && event.type !== 'cut') {
selectionStart -= 1;
// Remove number from before `/` if attempting to delete `/`
if (selectionStart === 2) {
selectionStart -= 1;
}
}
var valueStart = date.value.substring(0, selectionStart);
var valueEnd = date.value.substring(selectionEnd, date.value.length);
// Account for added `/`
if (selectionStart === 2) {
selectionStart += 1;
}
var proposedValue = valueStart + valueEnd;
var sanitized = proposedValue.replace(/[^0-9]+/g, '');
format(sanitized);
this.setSelectionRange(selectionStart, selectionStart);
}
}
function getString(event) {
if (event.type === 'paste') {
var clipboardData = event.clipboardData || window.clipboardData;
return clipboardData.getData('Text');
} else {
return String.fromCharCode(event.which);
}
}
function format(sanitized) {
var newValue;
var month = sanitized.substring(0, 2);
if (sanitized.length < 2) {
newValue = month;
} else {
var year = sanitized.substring(2, 6);
newValue = month + '/' + year;
}
date.value = newValue;
}
<input id="date" type="text" maxlength="7">
Try:
var date = document.getElementById('date');
date.addEventListener('keypress', function (event) {
var char = String.fromCharCode(event.which),
offset = date.selectionStart;
console.log(offset)
if (/\d/.test(char) && offset < 7) {
if (offset === 2) {
offset += 1;
}
date.value = date.value.substr(0, offset) + char + date.value.substr(offset + 1);
date.selectionStart = date.selectionEnd = offset + 1;
}
if (!event.keyCode) {
event.preventDefault();
}
});
<input id="date" type="text" value="mm/yyyy" maxlength="6" size="6">
function keypress(elem) { // get Input
if (typeof elem == 'string') {
if (document.getElementById(elem)) elem = document.getElementById(elem);
if (typeof elem == 'string') elem = document.getElementsByName(elem).item(0);
}
const el = elem; //handle error if not found input
el.maxLength = 19;
el.addEventListener('keypress', function (e) {
const t = e.keyCode || e.which
if (t == 8 || (t > 47 && t < 58)) { // limit numeric characters and backspace
if (t != 8) {
if (el.value.length == 2) el.value += '/';
if (el.value.length == 5) el.value += '/';
if (el.value.length == 10) el.value += ' ';
if (el.value.length == 13) el.value += ':';
if (el.value.length == 16) el.value += ':';
}
} else {
e.preventDefault();
}
});}
I am trying for smart search on my web page, so in my search on Click event I am getting Text which is selected in same textarea and but when I try with On keypress I'm unable to do find text of selected item. I am using jquery1.4.2 and tried option:select but still fail to do so...
My Code for click
$(document).ready(function() {
$('#ctl00_ContentPlaceHolder1_smartSearch').keyup(function(e) {
var str = document.getElementById('ctl00_ContentPlaceHolder1_smartSearch');
//alert("hi");
if (str.value.length >= 2) {
if (e.keyCode != 40 && e.keyCode != 38 && e.keyCode != 13) {
var str1 = str.value;
var str2 = str1.replace(' ', '+')
var url = "../SiteCache/90D/SmartGetQuoteData.aspx?Type=EQ&text=" + str2;
$("#ajax_response_smart").load(url);
}
$("#ajax_response_smart").show();
$('#listEQ li').live('click', function() {
var selected = $(this).text();
$("#ajax_response_smart").remove();
if (selected != "") {
var scripcode = selected.split("|");
document.getElementById('ctl00_ContentPlaceHolder1_smartSearch').value = scripcode[0];
document.getElementById('ctl00_ContentPlaceHolder1_hdnCode').value = scripcode[2];
}
});
var $listItems = $('#listEQ li');
var key = e.keyCode,
$selected = $listItems.filter('.ui-state-hover'),
$current;
if (key != 40 && key != 38 && key != 13)
{ return; }
else {
$listItems.removeClass('ui-state-hover');
}
if (key == 40) // Down key
{
if (!$selected.length || $selected.is(':last-child')) {
$current = $listItems.eq(0);
}
else {
$current = $selected.next();
}
}
else if (key == 38) // Up key
{
if (!$selected.length || $selected.is(':first-child')) {
$current = $listItems.last();
}
else {
$current = $selected.prev();
}
}
else if (key == 13) {
}
}
else {
$("#ajax_response_smart").hide();
}
if (typeof $current != "undefined") {
$current.addClass('ui-state-hover');
}
});
$("#ajax_response_smart").mouseover(function() {
var $listItems1 = $('#listEQ li');
$selected1 = $listItems1.filter('.ui-state-hover');
$(this).find("#listEQ li").mouseover(function() {
($selected1).removeClass("ui-state-hover");
$(this).addClass("ui-state-hover");
});
$(this).find("#listEQ li").mouseout(function() {
$(this).removeClass("ui-state-hover");
});
});
});
Please Suggest and Thanks in advance
hey i got my the answer i called the keypress event on my textbox in aspx page and from there i came on the currently paosted js page then on keypress event i got value.i.e not able to use keyup event to detect enter
in in Input field, if the user presses Backspace or Delete key, is there a way to get the deleted character.
I need to check it against a RegExp.
Assuming the input box has an id 'input'. Here is how with least amount of code you can find out the last character from the input box.
document.getElementById("input").onkeydown = function(evt) {
const t = evt.target;
if (evt.keyCode === 8) { // for backspace key
console.log(t.value[t.selectionStart - 1]);
} else if (evt.keyCode === 46) { // for delete key
console.log(t.value[t.selectionStart]);
}
};
<input id="input" />
The following will work in all major browsers for text <input> elements. It shouldn't be used for <textarea> elements because the getInputSelection function doesn't account for line breaks correctly in IE. See this answer for a (longer) function that will do this.
function getInputSelection(input) {
var start = 0, end = 0;
input.focus();
if ( typeof input.selectionStart == "number" &&
typeof input.selectionEnd == "number") {
start = input.selectionStart;
end = input.selectionEnd;
} else if (document.selection && document.selection.createRange) {
var range = document.selection.createRange();
if (range) {
var inputRange = input.createTextRange();
var workingRange = inputRange.duplicate();
var bookmark = range.getBookmark();
inputRange.moveToBookmark(bookmark);
workingRange.setEndPoint("EndToEnd", inputRange);
end = workingRange.text.length;
workingRange.setEndPoint("EndToStart", inputRange);
start = workingRange.text.length;
}
}
return {
start: start,
end: end,
length: end - start
};
}
document.getElementById("aTextBox").onkeydown = function(evt) {
evt = evt || window.event;
var keyCode = evt.keyCode;
var deleteKey = (keyCode == 46), backspaceKey = (keyCode == 8);
var sel, deletedText, val;
if (deleteKey || backspaceKey) {
val = this.value;
sel = getInputSelection(this);
if (sel.length) {
deletedText = val.slice(sel.start, sel.end);
} else {
deletedText = val.charAt(deleteKey ? sel.start : sel.start - 1);
}
alert("About to be deleted: " + deletedText);
}
};
No, there is no variable that stores the deleted char. Unless you have a history for Undo/Redo, but it would be difficult to get the information out of that component.
Easiest would be to compare the contents of the input field before and after delete/backspace have been pressed.
You could try something with the caret position:
function getCaretPosition(control){
var position = {};
if (control.selectionStart && control.selectionEnd){
position.start = control.selectionStart;
position.end = control.selectionEnd;
} else {
var range = document.selection.createRange();
position.start = (range.offsetLeft - 1) / 7;
position.end = position.start + (range.text.length);
}
position.length = position.end - position.start;
return position;
}
document.getElementById('test').onkeydown = function(e){
var selection = getCaretPosition(this);
var val = this.value;
if((e.keyCode==8 || e.keyCode==46) && selection.start!==selection.end){
alert(val.substr(selection.start, selection.length));
} else if(e.keyCode==8){
alert(val.substr(selection.start-1, 1));
} else if(e.keyCode==46){
alert(val.substr(selection.start, 1));
}
}
Tested on Chrome 6. See jsFiddle for an example