Articles on Trending Technologies

Technical articles with clear explanations and examples

AngularJS – ngMaxlength Directive

Mayank Agarwal
Mayank Agarwal
Updated on 08-Oct-2021 552 Views

The ngMaxlength Directive in AngularJS adds the maxlength validator to the ngModel. This directive is mostly used to control the text-based inputs but can also be applied for controlling the custom text-based controls.This validator sets the maxlength error key if the value ngModel.$viewValue is longer than the integer value obtained by evaluating the Angular JS expression defined in the ngMaxlength attribute value.Syntax..content..Example − ngMaxlength DirectiveCreate a file "ngMaxlength.html" in your Angular project directory and copy-paste the following code snippet.           ngMaxlength Directive                   ...

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AngularJS – ng-style Directive

Mayank Agarwal
Mayank Agarwal
Updated on 08-Oct-2021 1K+ Views

The ng-style Directive in AngularJS helps you to set the CSS style of an HTML element conditionally. If the condition evaluates to True, the style will be applied. The expression inside the ng-style directive must be an object. This is supported by all the HTML elements.Syntax..content..Example − ngStyle DirectiveCreate a file "ngStyle.html" in your Angular project directory and copy-paste the following code snippet.           ngStyle Directive                span {             color: black;          }       ...

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AngularJS – ngHref Directive

Mayank Agarwal
Mayank Agarwal
Updated on 08-Oct-2021 402 Views

The ngHref Directive in AngularJS solves the problem of replacing the markup when the link is broken which thus leads the system to return a 404 error. Instead of using markup like {{hash}} in an href attribute which will change or replace the markup value, we should use the ngHref directive since that link can be broken and thus leads to return a System Error.Syntax..content..Example − ngHref DirectiveCreate a file "ngHref.html" in your Angular project directory and copy-paste the following code snippet.           ngHref Directive                 ...

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AngularJS – ngSelected Directive

Mayank Agarwal
Mayank Agarwal
Updated on 08-Oct-2021 290 Views

The ngSelected Directive in AngularJS sets the selected attribute element on the element to True. We can also write an expression inside the ngSelected with the only condition that it should evaluate to True.This special directive is necessary since interpolation cannot be used inside the selected attribute.Syntax..content..Example − ngSelected DirectiveCreate a file "ngSelected.html" in your Angular project directory and copy-paste the following code snippet.           ngSelected Directive                                    Welcome to Tutorials Point     ...

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AngularJS – ng-switch Directive

Mayank Agarwal
Mayank Agarwal
Updated on 08-Oct-2021 733 Views

The ngSwitch directive in AngularJS conditionally swaps the DOM structure on the template based upon the scope expression. This directive can be used for showing or hiding elements based upon the switch cases.The HTML elements will be displayed only if the expression inside the ngSwitch directive evaluates to True, else it will remain hidden. This directive is supported by all the HTML elements.Syntax Contents... Contents... Contents... Example − ngSwitch DirectiveCreate a file "ngSwitch.html" in your Angular project directory and copy-paste the following code snippet. ...

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AngularJS – isObject() method

Mayank Agarwal
Mayank Agarwal
Updated on 08-Oct-2021 774 Views

The isObject() method in AngularJS basically checks if a reference is an Object or not. This method will return True if the reference passed inside the function is an Object, else it will return False.Note − NULL values are not considered as an Object, but JavaScript arrays are objects.Syntaxangular.isObject(value)Example − Check if the reference is an Object or notCreate a file "isObject.html" in your Angular project directory and copy-paste the following code snippet.           angular.isObject()                               ...

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AngularJS – isString() method

Mayank Agarwal
Mayank Agarwal
Updated on 08-Oct-2021 438 Views

The isString() method in AngularJS basically checks if a reference is a string value or not. This method will return True if the reference passed inside the function is a string, else it will return False.Syntaxangular.isString(value)Example − Check if the reference is a String or notCreate a file "isString.html" in your Angular project directory and copy-paste the following code snippet.           angular.isString()                                    Welcome to Tutorials Point             ...

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AngularJS – ng-change Directive

Mayank Agarwal
Mayank Agarwal
Updated on 08-Oct-2021 1K+ Views

The ng-change directive in AngularJS evaluates a given expression whenever the user changes the input. On every change, the ngChange directive is fired and the expression is evaluated immediately. The JavaScript onChange event only triggers at the end of a change (when the user leaves the form element or presses the key).Note − This directive also requires ngModel to be present.Syntax..Content..Example − ngChange DirectiveCreate a file "ngChange.html" in your Angular project directory and copy-paste the following code snippet.           ngChange Directive                   ...

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AngularJS – ng-keydown Directive

Mayank Agarwal
Mayank Agarwal
Updated on 08-Oct-2021 464 Views

The ng-keydown directive in AngularJS basically specifies a custom event on pressing the key. We can perform multiple functions whenever the keydown event is called. This event also supports different types of elements like , and .Syntax..content..Example − ngKeydown DirectiveCreate a file "ngKeydown.html" in your Angular project directory and copy-paste the following code snippet.           ngKeydown Directive                            .keyDown {             background-color: blue;             color: white; ...

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C++ program to overload addition operator to add two matrices

Arnab Chakraborty
Arnab Chakraborty
Updated on 07-Oct-2021 4K+ Views

Suppose we have two matrices mat1 and mat2. We shall have to add these two matrices and form the third matrix. We shall have to do this by overloading the addition operator.So, if the input is like589679834763then the output will be131113131312To solve this, we will follow these steps −Overload the addition operator, this will take another matrix mat as second argumentdefine one blank 2d array vvDefine one 2D array vv and load current matrix elements into itfor initialize i := 0, when i < size of vv, update (increase i by 1), do:for initialize j := 0, when j < ...

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