javascript - How to print out all attributes of an object -


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i'm using d3 , when hover on node want text box appear nodes attributes written it. have made text box , im able write attributes know text box :

function onhover(){     d3.selectall("#nodeattributes")             .text(function() { return (d.type); }) //random attribute know                         ; }

this called on 'mouseover' on node. if dont know attributes node has ? how can loop through attributes , write of them text box. data looks similar : 

nodes: [         {           "type": "o",           "name": "fred",           "age": "16",           "class": "maths", . . . .          },

what want outputted text : 

type: o name: fred age: 16 class: maths

i'm unsure how loop through each attribute of chosen node (d)

thanks in advance

you can iterate in object following code :

function onhover() {   d3.selectall('#nodeattributes').html(function (d) {     var str = '';     (var key in d) {       str += key + ': ' + d[key] + '<br/>'     }     return str;   }   ); }

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