AngularJS Expressions
Let's first discus about what is
expression. In general term, an expression is a combination of one or
more values, constants, variables, operators, and functions that computes to
produce another value.
AngularJS
expression is written inside double braces: {{expression}}.
AngularJS Expressions are used to bind data to view(HTML) that can be written inside double braces: {{ expression }}. It is much similar to JavaScript expressions. It can contain number, string, and Object.
Example: - {{2 + 3}} or {{ fName + " " + lName }} or {{ emp.fName + " " + emp.lName }}
In
AngularJS expression can be divided in following:-
1.
Number
Expressions
2.
String
Expressions
3. Object Expressions
4.
Array
Expressions
AngularJS Numbers
Numbers
are similar to JavaScript numbers in AngularJS
Example:-
<div ng-app="" ng-init="noOfItem=10;price=5">
<p>Total in dollar: {{
noOfItem * price }}</p>
</div>
Also
you can use ng-bind like below
<div ng-app="" ng-init="noOfItem=10;price=5">
<p>Total in dollar: <span ng-bind="noOfItem * price"></span></p>
</div>
AngularJS Strings
Strings
are like JavaScript strings in AngularJS:
Example:-
<div ng-app="" ng-init="fName='alok';lName='singh'">
<p>Employee full name is {{
fName + " " + lName }}</p>
</div>
AngularJS Objects
Objects
are like JavaScript objects in AngularJS:
Example:-
<div ng-app="" ng-init="emp={fName:'John',lName:'Doe'}">
<p>The name is {{ emp.fName + " " + emp.lName }}</p>
</div>
