我想要一个指令将S/.
添加到文本框的值。为此,我有一个Directive.在给定的小提琴中有一个$
符号。就像我需要S/.
而不是$
。在那个小提琴$
没有由用户提供它是内置的。如何获得S/.
符号。
为此,有一个指令,但它不符合我的要求100%。这是fiddle.第一个指令根本不影响我的ng模型。这个影响了ng-model。
$ fiddle: -
app.directive('realTimeCurrency', function ($filter, $locale) {
alert("directive")
var decimalSep = $locale.NUMBER_FORMATS.DECIMAL_SEP;
var toNumberRegex = new RegExp('[^0-9\\' + decimalSep + ']', 'g');
var trailingZerosRegex = new RegExp('\\' + decimalSep + '0+$');
var filterFunc = function (value) {
return $filter('currency')(value);
};
function getCaretPosition(input){
if (!input) return 0;
if (input.selectionStart !== undefined) {
return input.selectionStart;
} else if (document.selection) {
// Curse you IE
input.focus();
var selection = document.selection.createRange();
selection.moveStart('character', input.value ? -input.value.length : 0);
return selection.text.length;
}
return 0;
}
function setCaretPosition(input, pos){
if (!input) return 0;
if (input.offsetWidth === 0 || input.offsetHeight === 0) {
return; // Input's hidden
}
if (input.setSelectionRange) {
input.focus();
input.setSelectionRange(pos, pos);
}
else if (input.createTextRange) {
// Curse you IE
var range = input.createTextRange();
range.collapse(true);
range.moveEnd('character', pos);
range.moveStart('character', pos);
range.select();
}
}
function toNumber(currencyStr) {
alert("tonumber")
return parseFloat(currencyStr.replace(toNumberRegex, ''), 10);
}
return {
restrict: 'A',
require: 'ngModel',
link: function postLink(scope, elem, attrs, modelCtrl) {
alert("return");
modelCtrl.$formatters.push(filterFunc);
modelCtrl.$parsers.push(function (newViewValue) {
var oldModelValue = modelCtrl.$modelValue;
var newModelValue = toNumber(newViewValue);
modelCtrl.$viewValue = filterFunc(newModelValue);
var pos = getCaretPosition(elem[0]);
elem.val(modelCtrl.$viewValue);
var newPos = pos + modelCtrl.$viewValue.length -
newViewValue.length;
if ((oldModelValue === undefined) || isNaN(oldModelValue)) {
newPos -= 3;
}
setCaretPosition(elem[0], newPos);
return newModelValue;
});
}
};
});
S /。小提琴: -
app.directive('format', ['$filter', '$compile', function($filter, $compile) {
alert("directive")
return {
require: 'ngModel',
scope: {
val: '=val'
},
link: function(scope, elem, attrs, ctrl) {
if (!ctrl) return;
ctrl.$formatters.unshift(function(a) {
if (attrs.symbol == '$')
return $filter(attrs.format)(ctrl.$modelValue, '$')
else
return $filter(attrs.format)(ctrl.$modelValue)
});
scope.$watch(function() {
return elem.val()
}, function(newVal, oldVal) {
var a = newVal;
var plainNumber = a.split('.').filter(function(e) {
return (e.length > 0);
}).join('.');
var i = 0;
if (isNaN(parseFloat(plainNumber))) {
i = (attrs.symbol == '$') ? 1 : 3;
}
var num = plainNumber.substring(i, plainNumber.length).replace(/,/g, '');
if (attrs.symbol == '$')
elem.val($filter('currency')(num, attrs.symbol));
else
elem.val($filter('currency')(num));
var n = parseFloat(num);
scope.val = Number(n);
if (!scope.$$phase) {
$compile(elem.contents())(scope)
}
});
}
};
// controller
}])