Category: Web Development

How to hide .js and .map files from project explorer in Visual Studio Code

Generally, you would not want to see the compiled .js file and the corresponding .js.map files when you are using the Typescript. However you can use tsconfig.json to output the js and map files to a separate folder, it makes it easier to maintain. But if you don’t use a separate folder, you can use settings.json to hide the js and map files in the project folder explorer. Continue reading “How to hide .js and .map files from project explorer in Visual Studio Code”

How to display sum of two textbox in third textbox in AngularJS

This is the very common requirement to display sum of the two textbox input controls in the third textbox. However, there are many ways to display the sum of the two into the third input control using Angular but the correct implementation is depend on your requirement. Continue reading “How to display sum of two textbox in third textbox in AngularJS”

Sorting objects/columns with multiple fields AngularJS using HTML template binding and javaScript

Sorting in the tabular data is very common task. If you are not using the ui-grid and using other component which doesn’t provide the inbuilt sorting feature, then you need to do some additional work for the sorting. Suppose, I have a HTML table and using the simple ng-repeat directive. I am showing the employees data(name, age and department) in that table and want to sort data by the more than one columns. Continue reading “Sorting objects/columns with multiple fields AngularJS using HTML template binding and javaScript”

Two-way Data Binding in Angular 2 and JavaScript/ES5 – Creating a simple login form

Angular 2 has the different syntax for two way binding. AngularJS 2 is not the updated version of the AngularJS 1. It is completely rewrite framework. AngularJS 1 allows to create a applcation in a MVC pattern which has controllers, views and services etc. AngularJS 2 is the component based, means the whole application is a component which contains another set of components with the strong routing. Continue reading “Two-way Data Binding in Angular 2 and JavaScript/ES5 – Creating a simple login form”

AngularJs directive: Restrict user to enter value with only ‘N’ decimal places

Directive Name: aDecimals
How to Use: Add the attribute: n-decimals=”n” where n is the number like 2,3…
If you want to restrict user to 2 decimal points, write like this: evo-decimals=”2″

Source Code:

The following code will restrict user to enter numeric value with decimal upto 4 place.

Javascript code

var app = angular.module('plunker', []);
 
app.controller('MainCtrl', function($scope) {
 
});
 
  app.directive('nDecimals', [nDecimals]);
    function nDecimals() {
        return {
            restrict: 'A',
            link: function (scope, element, attr) {
                element.on('input', function (e) {
                  // Read the attribute to know the 'N' number places
                    var maxDecimal = Number(element.attr('n-Decimals'));
                    //Read the enetered value
                    var sal = element.val();
                    var parts;
                    if (sal.indexOf(".") !== -1) {
                        parts = sal.split(".");
                        if (parts[1].length > maxDecimal) {
                            element.val(sal.substr(0, sal.length - 1));
                        }
                    }
                });
                // destroy event.
                scope.$on('$destroy', function () {
                    element.off('input');
                });
            }
        };
    }

HTML code

 <input type="number" n-decimals="4" ng-model="salary"/>

In the above directive we are using the ‘input’ event which is very similar to the ‘onchange’ event. The ‘input event is fired synchronously when the value of an ‘input’ or ‘textarea’ element is changed while ‘onchange’ occurs when the element loses focus, after the content has been change.