javascript - Use of brackets in AngularJS -

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my question might stupid having hard time trying determine whether use {} or {{}} or nothing in html angularjs.

i came accross following : 1/ng-src = "{{ mysource }}" 2/ ng-class = "{ active:tab===2 }" 3/ ng-repeat = "foo in foos"

i think understand 3/ instruction not text replacement in 1/ why use simple brackets in 2/?

thanks lot in advance help!

burger

the curly braces in example 2 being used create object literal (see point 2 here) keys map class name , values map class value. it's same braces used when writing things this:

var mydata = {     x: 5,     y: 6 };

the double braces in example 1 used angularjs templates values inserted html angular.

example 3 uses normal html attributes (exactly <div class="test">).


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