jquery each

1var arr = ['one','two','three','four','five'];
2$.each(arr, function(index, value){
3	console.log('The value at arr[' + index + '] is: ' + value);
4});

1$( "li" ).each(function( index ) {
2  console.log( index + ": " + $( this ).text() );
3});

1$( "li" ).each(function( index ) {
2  console.log( index + ": " + $( this ).text() );
3});
4

1//Array
2$.each( arr, function( index, value ){
3    sum += value;
4});
5
6//Object
7$.each( obj, function( key, value ) {
8    sum += value;
9});

1
2$(querySelector).each(( index, value ) => {
3    // do stuff
4});
5

1$( "li" ).each(function() {
2  $( this ).addClass( "foo" );
3});