Code based on jquery loop map function_jquery

Without further ado, look at the code

Copy the code The code is as follows:

var map = {
Place names: ["Beijing", "Tianjin", "Shanghai"],
Ethnicity: ["Han", "Tibetan", "Uyghur"]
};

$.each (map,function(key,values){
console.log(key);
$(values).each(function(){
console.log("t" this);
});
});

If firebug is installed, the console will output the following tree structure:

Place name
Beijing
Tianjin
Shanghai
Ethnicity
Han Chinese
Tibetan
Uyghur

Note: The difference between $().each and $.each in jquery is that the former can only traverse arrays, while the latter can traverse Arrays and objects

Note: The place name ontology in the sinobook project is classified by type. The background package is a map (key is a relationship type, and the value is a list). The frontend can output it in the above way.