html - how to create a hash map so I can loop through or delete in javascript -

i tried creating hashmap in javascript

var map ={};  // key string values don't know when want access  // values objects

i want able loop through map. want able delete map pair using key.

i tried bunch of different things saw online , none of worked.

what best way this?

the for-in statement supposed that. if populate object, can loop through same-level properties such:

var obj = {a: 1, b: 2, c: 3}; for(key in obj){     console.log(obj[key]); }  // output: // 1 // 2 // 3

now, delete key-value pair, you'd have use delete operator. transforming previous example:

var obj = {a: 1, b: 2, c: 3}; for(key in obj){     delete obj[key]; }  console.log(obj);  // output: // {}

the syntax above standard javascript, supported since es1.

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