Trending December 2023 # Two States Of Angularjs Validation # Suggested January 2024 # Top 19 Popular

You are reading the article Two States Of Angularjs Validation updated in December 2023 on the website Daihoichemgio.com. We hope that the information we have shared is helpful to you. If you find the content interesting and meaningful, please share it with your friends and continue to follow and support us for the latest updates. Suggested January 2024 Two States Of Angularjs Validation

Introduction to AngularJS Validation

AngularJS offers client-side form validation. We use AngularJS as a frontend framework that is very scalable and easy to code and developed our single-page angular web application. The AngularJS validation also provides us with more exciting features like form validation, which only validates the user input to the client side without sending it to the backend server for validation. Also, it reduces our backend code and complexity for code maintenance. In angular, we have form validation, and we can also create custom validation as well.

Start Your Free Software Development Course

Web development, programming languages, Software testing & others

States of AngularJS Validation

So in angular js, we have divided the states into two parts. They are specific to form and fields.

1. Input Filed State

As we input different fields into the form, they possess varying states, outlined below. Each of these fields has a Boolean value of either true or false:

$dirty: This state shows whether the file is modified or not.

$untouched: This state shows whether the current form filed is touched.

$valid: This file holds significance as it showcases that the input data we have provided complies with the requested input.

$touched: It is used to show the field is touched.

$invalid: This file shows that the input we have provided is invalid according to the input we have asked to enter.

$pristine: This indicates that we have not done anything on the filed yet means has not been modified by the user.

2. Form State

The form state is as follows now all the states will apply for whole form fields, not for specific one or two:

$valid: Apply to the entire form that shows fields are valid.

$dirty: Used to show whether more than one field is modified or not.

$submitted: This state shows that the form is submitted.

$pristine: Apply to the whole form to show more than one file has not been modified yet.

$invalid: This indicates that the form fields are invalid corresponding to the input asked to enter.

Similarly, all these form states also have Boolean values, true or false. We can use these states to show some messages to the user, error messages, or success messages.

Following is an example to show validation:

Code:

Output:

Examples of AngularJS Validation

Fields can easily ensure validity by applying built-in validation options such as email and required in Angular.

Example #1

Email Validation.

If we have user input that contains the user’s email, we need to verify the input data so we can directly make this field a type of email. It is a feature of HTML5. Below is one example to show how to use this.

Code:

When we provide the correct email format, it will show the below output:

Example #2

Required Validation.

This is also an HTML5 feature that makes the filed as required. Below is a simple example to show how to use this.

Code:

Output:

We can also have custom validation, which means we can build our own validation according to the requirement. But that is not easy; we must make many things that make the code tricky to understand. We need to add a new directive to our application as follows.

Example #3

Custom Validation.

Code:

var app = angular.module(‘myApp’, []); app.directive(‘myDirective1’, function() { return { require: ‘ngModel’, link: function(scope, element, attr, mCtrl) { function myValidation1(value) { mCtrl.$setValidity(‘charE’, true); } else { mCtrl.$setValidity(‘charE’, false); } return value; } mCtrl.$parsers.push(myValidation1); } }; });

Output:

Here we are adding a new directive named mydirective1. The directive should follow the camel case naming convention. When calling the directive, it should be separated by a hyphen (‘-‘). Furthermore, an object is being returned to ngModel. Now we will make one function that takes argument according to requirement, and here mCTRL1 is the ngModelCotroller. Now test the input by providing some value wrong and right it will return true or false based on the value passed.

Conclusion

So AngularJS validation provides client-side validation before submitting it to the back end. So it reduces some backend calls to improve performance. Also, we can create custom validations by creating a directive in AngularJS, linking them with the controller, and providing logic in functions.

Recommended Articles

This is a guide to AngularJS Validation. Here we discuss the introduction and states of AngularJS validation, examples, and code implementation. You may also look at the following articles to learn more –

You're reading Two States Of Angularjs Validation

It Takes Two To Tango — A Romantic View Of Conversion

I needed to lower my Adwords costs. After 3 days of trying, my frustration turned into anger.

Before engaging in the dance, you need to know the song and whom you’re dancing with. Once you’re in the dance, you need to lead with simplicity. Once the dance is over, you need to be grateful. Those are the basics. Let’s dig in deeper.

Know Her and What She Wants

Your potential dance partner is already dancing. The question is: Will she choose to dance with you?

If you don’t know the tune she’s dancing to, if you can’t hear the rhythm to which she’s moving, you can’t possibly hope to attract her.

On the other hand, if you can demonstrate very early on that you’re more in tune than anyone else and that you can listen, she will come to you over and over again. Listening is more important than you think, because too many people act on first impressions that can be wrong. Continuously gather information, or, listen.

To figure out her rhythm, know her environment. Research the keywords she’s using, the websites she’s visited before finding you.

You’ll find two main environments online — informational and commercial — and you need to understand how both of them work.

If the keywords she’s using return websites that educate her on the topic, she’s looking for information. She’s less likely to dance with you if you try to sell her something right off the bat.

Is her environment commercial? If the websites she’s visiting before you are selling her on the benefits of their products, you know she’s doing comparison shopping. She wants to buy. And she wants the best deal. Let her know instantly that you have the best offer (if you really do).

Is she a she? Or a he? How old is she? What does she do? What does she really want? Answer those questions and you will have the ability to connect with her on a level that eludes most of your competitors.

During The Dance: Use Your Tools

Once you know who she is, where she’s from, what she actually wants, you have all the tools you need to attract her attention and sweep her away.

Here’s how to use those tools.

Grab her attention by shouting that you know what she wants. OK, maybe you don’t need to shout, but it is the first thing she has to know.

If you want to write a better Adwords ad title and description, your title has to demonstrate succinctly that you know what she wants. Your description should reinforce the headline and provide a short introduction to the solution without revealing everything (you won’t have enough space anyways).

Your site has to mirror everything she read in the ad. Write a headline that tells her you know what she wants and a sub-headline with a glimpse at the solution. Whatever you write, the message has to be evident to her in a split second. Her attention span is very short and you can loose her very fast.

Now keep her attention. Remember the two types of environment we talked about? Now’s the time to show that you really understand the moves.

Was her environment informational? You need to educate her. Your copy has to explain the problem better than she ever could. She has to feel understood. Then you have to provide a comprehensive explanation of the solution. If that includes buying your product, go for it, but not before she understands exactly why.

Was her environment commercial? Then, she wants to buy. The sooner the better. Tell her how your product will solve her problem, feature by feature. Tell her how you’re better than the competition (without sounding negative). Tell her how other people have used your product, and, if possible, let those people say it themselves through testimonials. Anything you can do to help her make an educated buy decision is welcome, and she will thank you.

Embody authenticity and simplicity. Show that you understand the problem and that you can deliver a solution. Make prominent the logos of esteemed partners as well as certification seals. And package it all in an elegant site design.

Keep it simple, stupid. That’s how to “kiss” her. And that’s what she expects. Don’t make her hunt. Make every step intuitive, and she will glide with you to the conversion you both want.

After The Dance

Congratulations! You’ve done the hardest work. You did the research to understand her needs. It helped you grab her attention, to take her by the hand and to trip the dance floor that is your site all the way to conversion.

But it’s not over yet. You want her to know that she made the right decision in trusting you. Show your appreciation. Let her know that you’re available if she needs more help. Ask her if she enjoyed the dance.

If she tells you that she did, she won’t object when you ask her to tell her friends about her experience nor when you invite her to the next dance.

You are a virtuoso.

What if everything was going well and then you were suddenly dumped? Here are some tips for dealing with an unexpected, significant drop in conversions. And what about your landing pages? Make sure they are doing what they can to convert, too.

Javascript Program For Finding Intersection Of Two Sorted Linked Lists

In this program, we are given two linked lists and we have to create a new linked list that will contain all the elements which are common in both of the lists as the lists are given sorted then we can use the concept of two pointers which are going to see in the article below.

Introduction to Problem

In the given problem we have to find the intersection of the given linked lists. Intersection means to get the common values from the given set of values, so here we have given two sorted linked lists from which we have to find the elements which are common in both. We have to return a new linked list and not change the values of the given linked lists.

For example −

We are given two sorted linked lists −

If none of the values is the same in both of the linked lists then we have to return an empty linked list that is just an empty node or null value.

Approach

We have seen the example above for the current problem, in this problem we are going to use the concept of the two pointers. Let’s see each step one by one then we will move to the implementation of the code −

First, we will create a class that will make the linked list structure and will help to bind the data and the pointer of the next node.

Then we will create three head nodes for the given linked lists and the new list to store the answer. Also, we will create a tail node to add the values in the answer-linked list.

We will create a function to travel over the linked list to print all the values of the linked list at once.

There will be a push function to add elements to the linked list that will store the answer or the extra linked list.

The intersection function will be used to implement the main concept which is the two-pointer approach.

We will create the given linked lists and then call the intersection function, and later print the final linked list.

Two Pointer Concept Example

In the given problems we have given linked lists in a sorted manner, so if the current number of both the linked lists is equal then we can say that is the intersection of the given linked lists and if that number is not equal then the linked list with the smaller value must have to move forward so that matching value could be found and if and list reaches the end of the null value then we will terminate our search.

var heada = null var headb = null var tail = null var extra = null class Node{ constructor(data){ this.value = data; chúng tôi = null; } } function print(head) { var temp = head var values = 0 while (temp != null) { temp = temp.next; } console.log(values + "null"); } function add(val) { var temp_node = new Node(val); if (extra == null) { extra = temp_node; tail = temp_node; } else { chúng tôi = temp_node; tail = temp_node; } } function intersection() { var tempa = heada var tempb = headb while (tempa != null && tempb != null) { if (tempa.value == tempb.value){ add(tempa.value); tempa = tempa.next; tempb = tempb.next; } else if (tempa.value < tempb.value){ tempa = tempa.next; }else tempb = tempb.next; } } heada = new Node(1); heada.next = new Node(2); heada.next.next = new Node(3); heada.next.next.next = new Node(4); heada.next.next.next.next = new Node(6); headb = new Node(2); headb.next = new Node(4); headb.next.next = new Node(6); headb.next.next.next = new Node(8); intersection(); console.log("The linked list containing the common items of the linked list is: "); print(extra); Time and Space Complexity

The time complexity of the above code is O(N) where N is the size of the linked list because we are iterating over the linked lists using the two pointers.

The space complexity of the above code is O(1). We are using the extra space here but that extra space is to store the final answer, hence that is not the extra which makes the space complexity constant.

Conclusion

In this tutorial, we have implemented a JavaScript program for finding the intersection of two sorted linked lists. We were given two linked lists and we have to create a new linked list that will contain all the elements which are common in both of the lists as the lists are given sorted then we can use the concept of two pointers. The time complexity of our approach is O(N) where N is the size of the linked lists while the space complexity of the given approach is O(1).

Husain Haqqani: United States Must Earn Pakistani Trust

Husain Haqqani: United States Must Earn Pakistani Trust Controversial ambassador returns to his academic stomping grounds

Husain Haqqani, Pakistan’s ambassador to the United States. Photo by Seth Rolbein

Husain Haqqani, Pakistan’s ambassador to the United States, told an audience at Morse Auditorium last night that if the United States hopes to have a constructive long-term relationship with Pakistan, it must persuade the people of that country that it can be more than a fair-weather friend.

“There are some great things about the United States,” Haqqani told the assembly. “There are also some weaknesses, and one of them is that Americans are instinctively isolationists. When they deal with the world, they want to deal with it in their own way.”

Haqqani, a College of Arts & Sciences associate professor of international relations currently on a leave of absence, said Americans’ preference not to become engaged in other cultures, but to “get in and get out,” made many efforts unsuccessful.

“Americans need to understand that the world is not a problem for them to solve,” he argued. “The world is a situation for everyone to understand.”

The Karachi native declined to answer questions about intelligence matters or the political wishes of his government. He recently worked with U.S. Senator John F. Kerry (D-Mass.) (Hon.’05) to fashion a $7.5 billion, five-year aid package to Pakistan, a deal that has been denounced by Islamic militants and the Pakistani military, in part because it could bolster the country’s unsteady civilian government, which is locked in a power struggle with the military.

At last night’s talk, sponsored by the CAS department of international relations and the BU Center for the Study of Asia, the ambassador said that the history of American operations in Pakistan — building military bases to repel the Soviets and abandoning those bases when that conflict ended — had led most Pakistanis to doubt America’s commitment. He recounted a meeting with a tribal leader who had been encouraged to embrace the Mujahideen, then fighting the Soviets, as “freedom warriors.” Now, he said, the same tribal leader was being told that those former freedom fighters were the enemy, because they were fighting against U.S. forces.

Haqqani told his audience that Pakistan was a country that wanted to be “part of the 21st century,” a place where people favored the education of women as well as men. At the same time, until last year’s election, the Taliban was not seen to be a negative force. Now, he said, while the United States is still seen in a negative light, the Taliban has fallen from favor.

He said the challenge for U.S.-Pakistan relations is that “the United States needs to have a bilateral relationship with Pakistan based on mutual interests. Pakistan is the world’s second largest Muslim nation, with 170 million people and with nuclear weapons. It’s a country that wants to be able to move forward. It wants to be part of the capitalist system, and to do that it needs some support from the United States.”

“In my lifetime of dealing with Americans,” he said, “you are great people, but you guys don’t do patience so well. It’s a mind-set that doesn’t work in places where change is slow.”

Art Jahnke can be reached at [email protected].

Explore Related Topics:

Combine Values Of Two Columns Separated With Hyphen In An R Data Frame.

To combine values of two columns separated with hyphen in an R data frame, we can use apply function.

For Example, if we have a data frame called df that contains only two columns say X and Y then we can combine the values in X and Y by using the below command given below −

df$X_Y<-apply(df,1,paste,collapse="-") Example 1

Consider the data frame given below −

Age<-sample(20:50,20) Height<-sample(130:200,20) df1<-data.frame(Age,Height) df1

The following dataframe is created

  Age Height 1  22   147 2  37   138 3  28   184 4  40   154 5  32   193 6  20   135 7  47   185 8  27   198 9  46   156 10 29   170 11 44 140 12 43 167 13 23 182 14 49 171 15 31 150 16 25 148 17 21 180 18 45 169 19 39 179 20 36 133

To combine the values of both columns in df1 separated with hyphen on the above created data frame, add the following code to the above snippet −

Age<-sample(20:50,20) Height<-sample(130:200,20) df1<-data.frame(Age,Height) df1$Age_Height<-apply(df1,1,paste,collapse="-") df1 Output

If you execute all the above given snippets as a single program, it generates the following Output −

    Age Height Age_Height  1   22 147       22-147  2   37 138       37-138  3   28 184       28-184  4   40 154       40-154  5   32 193       32-193  6   20 135       20-135  7   47 185       47-185  8   27 198       27-198  9   46 156       46-156 10   29 170       29-170 11   44 140       44-140 12   43 167       43-167 13   23 182       23-182 14   49 171       49-171 15   31 150       31-150 16   25 148       25-148 17   21 180       21-180 18   45 169       45-169 19   39 179       39-179 20   36 133       36-133 Example 2

Following snippet creates a sample data frame −

Group<-sample(c("First","Second","Third"),20,replace=TRUE) Rate<-sample(1:10,20,replace=TRUE) df2<-data.frame(Group,Rate) df2 Output

If you execute the above given snippet, it generates the following Output −

   Group Rate 1 First    8 2 Second   4 3 First    5 4 Second   7 5 Second   4 6 Third    7 7 Second   9 8 Second   7 9 First    7 10 Second  3 11 First  10 12 Second  9 13 First   7 14 First   8 15 Second  1 16 Second  8 17 Second  5 18 Third 10 19 Second 4 20 First 5

To combine the values of both columns in df2 separated with hyphen on the above created data frame, add the following code to the above snippet −

Group<-sample(c("First","Second","Third"),20,replace=TRUE) Rate<-sample(1:10,20,replace=TRUE) df2<-data.frame(Group,Rate) df2$Group_Rate<-apply(df2,1,paste,collapse="-") df2 Output

If you execute all the above given snippets as a single program, it generates the following Output −

     Group Rate Group_Rate 1    First    8   First- 8 2   Second    4  Second- 4 3    First    5   First- 5 4   Second    7  Second- 7 5   Second    4  Second- 4 6    Third    7   Third- 7 7   Second    9  Second- 9 8   Second    7  Second- 7 9    First    7   First- 7 10  Second    3  Second- 3 11   First   10   First-10 12  Second    9  Second- 9 13   First    7   First- 7 14   First    8   First- 8 15  Second    1 Second- 1 16  Second    8 Second- 8 17  Second 5 Second- 5 18   Third 10 Third- 10 19  Second 4 Second- 4 20   First 5 First- 5

How To Swap Two Numbers In Golang?

In this tutorial, we will discuss swapping two numbers in Golang. We will cover two approaches: first swapping two numbers within the function and second creating a different function.

Swapping two numbers within the function Algorithm

Example

import

“fmt”

func

main

(

)

{

var

number1

,

number2

,

number3

int

number1

=

45

number2

=

63

fmt

.

Println

(

“Numbers before swapping: n Number 1 =”

,

number1

,

“n Number 2 =”

,

number2

)

number3

=

number1 number1

=

number2 number2

=

number3

fmt

.

Println

(

“Numbers after swapping:n Number 1 =”

,

number1

,

“n Number 2 =”

,

number2

,

“n(Swap within the function)”

)

}

In the above code first, we are declaring two integer variables then we are initializing the variables. In the next step, we are swapping both the integer variables within the function using the third variable. In the end, we are printing the integer variable after swapping.

Output Numbers before swapping: Number 1 = 45 Number 2 = 63 Numbers after swapping: Number 1 = 63 Number 2 = 45 (within the function) Swapping two numbers using a different function Algorithm

Example

import

“fmt”

func

swapNumbers

(

number1

,

number2

*

int

)

{

var

number3

int

number3

=

*

number1

*

number1

=

*

number2

*

number2

=

number3

}

func

main

(

)

{

var

number1

,

number2

int

number1

=

45

number2

=

63

fmt

.

Println

(

“Numbers before swapping: n Number 1 =”

,

number1

,

“n Number 2 =”

,

number2

)

swapNumbers

(

&

number1

,

&

number2

)

fmt

.

Println

(

“Numbers after swapping:n Number 1 =”

,

number1

,

“n Number 2 =”

,

number2

,

“n(Swap using different function)”

)

}

In the above code first, we are declaring two integer variables then we are initializing the variables. In the next step, we are swapping both the integer variables using the swapNumber() function. In the end, we are printing the integer variable after swapping.

Syntax number3 = *number1 *number1 = *number2 *number2 = number3

We are passing parameters as call by address so that value will get swapped globally due to which we are putting * in front of number 1 and number2. And in the above code, we are using a third variable to do the swapping. Storing number1 in number3 then number2 in number1 and then number3 in number1.

Output Numbers before swapping: Number 1 = 45 Number 2 = 63 Numbers after swapping: Number 1 = 63 Number 2 = 45 (within the function) Swapping two numbers with one line of code

Golang supports a syntax using which we can swap two variables in one line.

Syntax Variable1, variable2 = variable2, variable1 Example

import

“fmt”

func

main

(

)

{

var

number1

,

number2

int

number1

=

45

number2

=

63

fmt

.

Println

(

“Numbers before swapping: n Number 1 =”

,

number1

,

“n Number 2 =”

,

number2

)

number1

,

number2

=

number2

,

number1

fmt

.

Println

(

“Numbers after swapping:n Number 1 =”

,

number1

,

“n Number 2 =”

,

number2

,

“n(Swap using a one-liner syntax)”

)

}

In the above code first, we are declaring two integer variables then we are initializing the variables. In the next step, we are swapping both the integer variables using the one-line syntax supported by Golang. In the end, we are printing the integer variable after swapping

Syntax number1, number2 = number2, number1 –

As Golang supports initializing multiple variables at the same time so here in this line we are initializing number1 with number2 and number2 with number1.

Output Numbers before swapping: Number 1 = 45 Number 2 = 63 Numbers after swapping: Number 1 = 63 Number 2 = 45 (Swap using a one-liner syntax)

In these ways, we can swap two numbers in Golang. The separate function or one-liner lies under good programming standards. To learn more about Golang you can follow this tutorials.

Update the detailed information about Two States Of Angularjs Validation on the Daihoichemgio.com website. We hope the article's content will meet your needs, and we will regularly update the information to provide you with the fastest and most accurate information. Have a great day!