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Masking a html textbox to US phonenumber format

I have used the following code for masking.
But the problem is with position of cursor.
HTML
JS
Array.prototype.forEach.call(document.body.querySelectorAll("*[data-mask]"), applyDataMask);
function applyDataMask(field) {
var mask = field.dataset.mask.split('');
// For now, this just strips everything that's not a number
function stripMask(maskedData) {
function isDigit(char) {
return /\d/.test(char);
}
return maskedData.split('').filter(isDigit);
}
// Replace `_` characters with characters from `data`
function applyMask(data) {
return mask.map(function (char) {
if (char != '_') return char;
if (data.length == 0) return char;
return data.shift();
}).join('')
}
function reapplyMask(data) {
return applyMask(stripMask(data));
}
function changed() {
var oldStart = field.selectionStart;
var oldEnd = field.selectionEnd;
field.value = reapplyMask(field.value);
field.selectionStart = oldStart;
field.selectionEnd = oldEnd;
}
field.addEventListener('click', changed)
field.addEventListener('keyup', changed)
}

HTML:
<input id="txtPhone" data-mask="(___) ___-____" type="text" />
Javascript:
Array.prototype.forEach.call(document.body.querySelectorAll("*[data-mask]"), applyDataMask);
function applyDataMask(field) {
var mask = field.dataset.mask.split('');
// For now, this just strips everything that's not a number
function stripMask(maskedData) {
function isDigit(char) {
return /\d/.test(char);
}
return maskedData.split('').filter(isDigit);
}
// Replace `_` characters with characters from `data`
function applyMask(data) {
return mask.map(function (char) {
if (char != '_') return char;
if (data.length == 0) return char;
return data.shift();
}).join('')
}
function reapplyMask(data) {
return applyMask(stripMask(data));
}
function changed(e) {
var i = field.value.indexOf('_');
if (e.keyCode == undefined) {
i = 0;
}
field.value = reapplyMask(field.value);
field.selectionStart = i;
field.selectionEnd = i;
}
field.addEventListener('click', changed)
field.addEventListener('keyup', changed);
}

Error while adding a custom html to Google Tag Manager

I'm not really into JS, could you tell me what's wrong with this code? I tried to add this but an error occurs "Error at line 74, character 3: Parse error. ')' expected". I don't really know what to repair.
<script id="gtm-scroll-tracking" type="text/javascript">
; (function (document, window, config) {
// Browser dependencies, script fails silently
if (!document.querySelector || !document.body.getBoundingClientRect) {
return false;
}
// Get our dataLayer ready, in case we're not in GTM or we've got a special name
var dataLayerName = config.dataLayerName || 'dataLayer';
var dataLayer = window[dataLayerName] || (window[dataLayerName] = []);
var cache = {};
// Initialize our distances, for later
config.distances = config.distances || {};
checkDepth();
addEvent(window, 'scroll', throttle(checkDepth, 500));
function getMarks(_docHeight, _offset) {
var marks = {};
var percents = [];
var pixels = []
if (config.distances.percentages) {
if (config.distances.percentages.each) {
percents = percents.concat(config.distances.percentages.each);
}
if (config.distances.percentages.every) {
var _every = every_(config.distances.percentages.every, 100);
percents = percents.concat(_every);
}
}
if (config.distances.pixels) {
if (config.distances.pixels.each) {
pixels = pixels.concat(config.distances.pixels.each);
}
if (config.distances.pixels.every) {
var _every = every_(config.distances.pixels.every, _docHeight);
pixels = pixels.concat(_every);
}
}
marks = addMarks_(marks, percents, '%', _docHeight, _offset);
marks = addMarks_(marks, pixels, 'px', _docHeight, _offset);
return marks;
}
function addMarks_(marks, points, symbol, _docHeight, _offset) {
var i;
for (i = 0; i < points.length; i++) {
var _point = parseInt(points[i], 10);
var height = symbol !== '%' ? _point + _offset : _docHeight *
(_point / 100) + _offset;
var mark = _point + symbol;
if (height <= _docHeight + _offset) { marks[mark] = height; }
}
return marks;
}
function every_(n, total) {
var n = parseInt(n, 10);
var _num = total / n;
var arr = [];
for (i = 1; i < _num + 1; i++) { arr.push(i * n); }
return arr;
}
function checkDepth() {
var _bottom = parseBorder_(config.bottom);
var _top = parseBorder_(config.top);
var height = docHeight(_bottom, _top);
var marks = getMarks(height, (_top || 0));
var _curr = currentPosition();
for (key in marks) {
if (_curr > marks[key] && !cache[key]) {
cache[key] = true;
fireAnalyticsEvent(key);
}
}
}
function fireAnalyticsEvent(distance) {
dataLayer.push({
'event': 'scrollTracking',
'attributes': { 'distance': distance }
});
}
}
function parseBorder_(border) {
if (typeof border === 'Number' || parseInt(border, 10)) {
return parseInt(border, 10);
}
try {
// If we have an element or a query selector, poll getBoundingClientRect
var el = border.nodeType && border.nodeType === 1 ? border :
document.querySelector(border);
var docTop = document.body.getBoundingClientRect().top;
var _elTop = Math.floor(el.getBoundingClientRect().top - docTop);
return _elTop;
} catch (e) { return void (0); }
}
// Adapted from
https://developer.mozilla.org/en-US/docs/Web/API/Window/scrollY
function currentPosition() {
var supportPageOffset = window.pageXOffset !== undefined;
var isCSS1Compat = ((document.compatMode || "") === "CSS1Compat");
var currScrollTop = supportPageOffset ?
window.pageYOffset :
isCSS1Compat ?
document.documentElement.scrollTop :
document.body.scrollTop;
return parseInt(currScrollTop, 10) + parseInt(viewportHeight(), 10);
}
function viewportHeight() {
var elem = (document.compatMode === "CSS1Compat") ?
document.documentElement :
document.body;
return elem.clientHeight;
}
function docHeight(_bottom, _top) {
var body = document.body;
var html = document.documentElement;
var height = Math.max(body.scrollHeight, body.offsetHeight,
html.clientHeight, html.scrollHeight, html.offsetHeight);
if (_top) { height = height - _top; }
if (_bottom) { height = _bottom - _top; }
return height - 5;
}
/*
* Throttle function borrowed from:
* Underscore.js 1.5.2
* http://underscorejs.org
*
(c) 2009-2013 Jeremy Ashkenas, DocumentCloud and Investigative
Reporters & Editors
* Underscore may be freely distributed under the MIT license.
*/
function throttle(func, wait) {
var context, args, result;
var timeout = null;
var previous = 0;
var later = function () {
previous = new Date;
timeout = null;
result = func.apply(context, args);
};
return function () {
var now = new Date;
if (!previous) previous = now;
var remaining = wait - (now - previous);
context = this;
args = arguments;
if (remaining <= 0) {
clearTimeout(timeout);
timeout = null;
previous = now;
result = func.apply(context, args);
} else if (!timeout) {
timeout = setTimeout(later, remaining);
}
return result;
};
}
// Cross-browser compliant event listener
function addEvent(el, evt, fn) {
if (el.addEventListener) { return el.addEventListener(evt, fn); }
if (el.attachEvent) {
return el.attachEvent('on' + evt, function (evt) {
// Call the event to ensure uniform 'this' handling, pass it event
fn.call(el, evt);
});
}
if (typeof el['on' + evt] === 'undefined' || el['on' + evt] === null) {
return el['on' + evt] = function (evt) {
// Call the event to ensure uniform 'this' handling, pass it event
fn.call(el, evt); \
}
}
}
})(document, window,
{
// False if you just use the default dataLayer variable, otherwise enter it here
'dataLayerName': false,
'distances': {
// Configure percentages of page you'd like to see if users scroll past
'percentages': {
'each': [10, 90],
'every': 25
},
// Configure for pixel measurements of page you'd like to see if users scroll past
'pixels': {
'each': [],
'every': null
}
},
// Accepts a number, DOM element, or query selector to determine the top of the scrolling area
'top': null,
// Accepts a number, DOM element, or query selector to determine the bottom of the scrolling area
'bottom': null,
});
</script>
While trying to preview (debug), the tool tells me:
Error at line 74, character 3: Parse error. ')' expected

Trying to underline the first occurence of a character with Javascript/Angular

I have some anchor tags where I'm using an angular directive to decorate (underline) the text(to indicate a keyboard shortcut). So far my code only works if the specified character (for "amt-alt-key") is at the beginning of the first word.
What I need to do is search the whole string and underline the first occurrence of the specified character. So right now if I specified an amt-alt-key="A" in the example below it would work fine as is. However, the problem is the first occurrence could be anywhere in the anchor text. Any help with writing the correct JavaScript would be greatly appreciated.
--Jason
In my html
Agent Data
In my angular code
app.directive("amtAltKey", function () {
return {
link: function (scope, elem, attrs) {
var altKey = attrs.amtAltKey.toUpperCase();
var text = el.innerText;
var textUpper = text.toUpperCase();
var indexOfKey = textUpper.indexOf(altKey);
var newText = text.substring(0, indexOfKey);
newText += '<u>' + text.substring(indexOfKey, 1) + '</u>';
if (indexOfKey + 1 < text.length) { newText += text.substring(indexOfKey + 1); }
el.innerHTML = newText;
keyListeners[altKey] = el;
}
};
});

You can use Regular expression to check the required pattern and a replaceText utility function to replace the matched pattern and once you have the text, replace the existing content of the element as below:
.directive('amtAltKey', function () {
return {
link: function (scope, elem, attrs) {
var altKey = new RegExp(attrs.amtAltKey, 'i');
var text = elem.text();
function replaceText (txt) {
function underline(match) {
return '<u>' + match +'</u>';
}
return txt.replace(altKey, underline);
}
var newText = replaceText(text);
elem.html(newText);
}
};
});
Here is a working example: https://jsbin.com/zefodo/2/edit?html,js,console,output

Use this:
app.directive("amtAltKey", function () {
return {
link: function (scope, elem, attrs) {
var altKey = attrs.amtAltKey;
var text = elem.innerText;
elem.innerHTML = text.replace(new RegExp(altKey, 'i'), '<u>$&</u>');
keyListeners[altKey] = elem;
}
};
});

Try this
app.directive("amtAltKey", function() {
return {
link: function(scope, elem, attrs) {
var el = elem[0];
var altKey = "" + attrs.amtAltKey.toUpperCase();
var text = el.innerText;
var textUpper = text.toUpperCase();
var indexOfKey = textUpper.indexOf(altKey);
if (indexOfKey > -1) {
var newText = text.substr(0, indexOfKey);
newText += '<u>' + text.substr(indexOfKey, 1) + '</u>';
if (indexOfKey + 1 < text.length) {
newText += text.substr(indexOfKey + 1);
}
el.innerHTML = newText;
keyListeners[altKey] = el;
}
}
};
});

whole number pad with zeros

I have a directive that convert to 2 decimal places (input number textbox) and
it is working well but I would like to pad the whole number with zeros.
Anyone knows how I can achieve whole number with padded zeros? Example below.
2 -> 2.00 - not done
10.666 -> 10.67 - done
app.directive('toPrecision',['$filter', function ($filter) {
return {
replace: false,
restrict: 'A',
link: function(scope, element, attr) {
var input = angular.element(element);
var precisionValue = attr.toPrecision;
input.on('keyup', function() {
var parsed = parseFloat(input.val());
if (!isNaN(parsed)) {
if (parseInt(parsed, 10) !== parsed && String(parsed).split('.')[1].length > 2) {
var result = parsed.toFixed(precisionValue);
input.val(result);
}
}
});
}
}
}]);
HTML
<input type="number" class="form-control" ng-model="rate" to-precision="2" min="0" step="1">

Ended rewriting the directives for what I want.
app.directive('toPrecision', function() {
return {
replace: false,
restrict: 'EA',
require: 'ngModel',
link: function(scope, element, attr, ngModelCtrl) {
var input = angular.element(element);
var precisionValue = attr.toPrecision;
ngModelCtrl.$parsers.push(function(value) {
var clean = value.replace(/[^-0-9\.]/g, '');
if (value !== clean) {
ngModelCtrl.$setViewValue(clean);
ngModelCtrl.$render();
}
return clean;
});
ngModelCtrl.$formatters.push(function(value) {
if (angular.isUndefined(value)) {
return "";
}
var parsed = parseFloat(value);
return parsed.toFixed(precisionValue);
});
input.on('blur', function() {
var parsed = parseFloat(input.val());
if (!isNaN(parsed)) {
var result = parsed.toFixed(precisionValue);
input.val(result);
ngModelCtrl.$setViewValue(result);
}
});
}
}});

Here's code to do it taken from the answer I voted to close as duplicate:
var s = number.toString();
if (s.indexOf('.') == -1) s += '.';
while (s.length < s.indexOf('.') + 4) s += '0';

Let math do it, Try this.
if (!isNaN(parsed)) {
parsed += Math.pow(10, -1 * (precisionValue + 2)); // 2 + 0.0001
var result = parsed.toFixed(precisionValue); // 2.00
input.val(result);
}
See fiddle

Disable that acceess key sets focus to button

I have created a access key Angular directive.
angular.module('tcne.common').directive("accessKey", function () {
return {
restrict: "A",
scope: {
},
link: function (scope, element, attrs) {
var $element = $(element);
$element.attr("accesskey", attrs.accessKey);
var content = $element.html();
for (var i = 0; i < content.length; i++) {
var char = content[i];
if (char.toLowerCase() === attrs.accessKey.toLowerCase()) {
content = content.substr(0, i) + "<u>" + char + "</u>" + content.substr(i + 1);
break;
}
}
$element.html(content);
},
replace: false
};
});
It underscores the access key in the button Label and adds the access key attribute to the element. Can I somehow prevent the accesskey from setting the button in focus? It kills the purpose of keyboard short cuts
edit: Rolled my own acccess key
angular.module('tcne.common').directive('accessKey', ['$compile', '$interval', function ($compile, $interval) {
var modifierPressed = false;
$("body").keyup(function (e) {
if (modifierPressed && !e.altKey) {
modifierPressed = false;
digestScopes();
}
});
$("body").keydown(function (e) {
modifierPressed = e.altKey;
if (modifierPressed && scopes.hasOwnProperty(String.fromCharCode(e.which).toLowerCase())) {
var scope = scopes[String.fromCharCode(e.which).toLowerCase()];
scope.handle();
return;
}
if (modifierPressed) {
e.preventDefault();
digestScopes();
}
});
function digestScopes() {
for (var index in scopes) {
if (scopes.hasOwnProperty(index)) {
var scope = scopes[index]
scope.$digest();
}
}
}
function isModifierPressed() {
return modifierPressed;
}
var scopes = {};
return {
restrict: 'A',
scope: {
},
link: function (scope, element, attrs) {
var key = attrs.accessKey.toLowerCase();
var content = element.html();
var char;
for (var i = 0; i < content.length; i++) {
char = content[i];
if (char.toLowerCase() === key) {
content = content.substr(0, i) + '<u><strong ng-if="highlight()">{{char}}</strong><span ng-if="!highlight()">{{char}}</span></u>' + content.substr(i + 1);
break;
}
}
element.html(content);
var underscoreScope = scope.$new();
underscoreScope.char = char;
underscoreScope.highlight = isModifierPressed;
underscoreScope.handle = element.click.bind(element);
scopes[key] = underscoreScope;
scope.$on('$destroy', function () {
delete scopes[key];
});
$compile(element.find("u"))(underscoreScope);
},
replace: false
};
}]);
It also highlights the access key button when alt key is pressed which is nice
Any pit falls with this code? Thanks
Found a pitfall, element.html and then $compile will break any directives inside the element that is already compiled. So I changed to
var captionElement = element.contents().first(":text");
var content = captionElement.text();
And then I add my custom content like
var view = $("<span>").html(content);
captionElement.replaceWith(view);
$compile(view)(vm);
Please let me know if this is considered bad practice