I am trying to loop through a Json object which would look like this
[
{
"yang_type": "container",
"name": "c1",
"value": "",
"children": [
{
"yang_type": "",
"name": "type",
"value": "Uint32",
"children": []
},
{
"yang_type": "list",
"name": "DNS",
"value": "",
"children": [
{
"name": "type",
"value": "String",
"children": [],
"yang_type": ""
},
{
"yang_type": "leaf",
"name": "ip-address",
"value": "",
"children": [
{
"name": "type",
"value": "string",
"children": [],
"yang_type": ""
}
]
},
{
"yang_type": "leaf",
"name": "Domain",
"value": "",
"children": [
{
"name": "type",
"value": "string",
"children": [],
"yang_type": ""
}
]
}
]
}
]
}
]
I am trying this logic but it doesnt loop through first childs child.
while(m.children.length >= 1) {
if(m.yang_type!='' && m.name!=''){
{$log.error("parent:",m.yang_type,m.name);}
}
if(m.name!='' && m.value!=''){
{$log.error("child:",m.name,m.value);}
}
m = m.children[m.children.length - 1];
}
The above code doesn't loop through all the children. what i am doing wrong ?
You try to loop over the array. Your attempt does not work this way.
You could use a callback for iterating and a take it for the recursive call for childrens.
function loop(a) { console.log(a.name); // process you data Array.isArray(a.children) && a.children.forEach(loop); // check and iterate children } var data = [{ "yang_type": "container", "name": "c1", "value": "", "children": [{ "yang_type": "", "name": "type", "value": "Uint32", "children": [] }, { "yang_type": "list", "name": "DNS", "value": "", "children": [{ "name": "type", "value": "String", "children": [], "yang_type": "" }, { "yang_type": "leaf", "name": "ip-address", "value": "", "children": [{ "name": "type", "value": "string", "children": [], "yang_type": "" }] }, { "yang_type": "leaf", "name": "Domain", "value": "", "children": [{ "name": "type", "value": "string", "children": [], "yang_type": "" }] }] }] }]; data.forEach(loop);
Edit with indented output.
function loop(level) { return function (a) { var i = level, s = ''; while (i--) { s += ' '; } if (level) { s += '*'; } a.yang_type ? console.log(s + a.yang_type + ' ' + a.name) : console.log(s + a.name + ' ' + a.value); Array.isArray(a.children) && a.children.forEach(loop(level + 1)); } } var data = [{ "yang_type": "container", "name": "c1", "value": "", "children": [{ "yang_type": "", "name": "type", "value": "Uint32", "children": [] }, { "yang_type": "list", "name": "DNS", "value": "", "children": [{ "name": "type", "value": "String", "children": [], "yang_type": "" }, { "yang_type": "leaf", "name": "ip-address", "value": "", "children": [{ "name": "type", "value": "string", "children": [], "yang_type": "" }] }, { "yang_type": "leaf", "name": "Domain", "value": "", "children": [{ "name": "type", "value": "string", "children": [], "yang_type": "" }] }] }] }]; data.forEach(loop(0));
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