如何遍历 object 数组以查找包含相同单词的键值-Javascript

Question

I have an array of object with textnames

array= [{
  text:"ABC",
  someobj:{}
  length: 3
 },{
  text:"XYZ",
  someobj:{},
  length: 4
 },{
  text:"TES",
  someobj:{},
  length: 2
 },{
  text:"ABC_VALUE",
  someobj:{},length: 3
 },{
  text:"TES_VALUE",
  someobj:{},length: 10
 },{
  text:"SME",
  someobj:{},length: 39
 },{
  text:"SME_VALUE",
  someobj:{}, length: 1
 }
]

As you can see I have _VALUE present in some text names. I'm trying to get the total length of all the matching values, ie length of "ABC" + length of "ABC_VALUE"(6), similarly length of "SME_VALUE" + length of "SME" (40).

I tried with switch case and if condition.

function getVlaues(obj)
let length=0;
    else if(obj.text.includes("SME")) {length += obj.length;}
    else if (obj.text.includes("ABC")) {length += obj.length;}
    else if (obj.text.includes("TES")) {length += obj.length;}

    return length;
}

but this does not return me the total length of the 2 object. Any idea how to do this?

Answer 1

You can split text on _ and use the first value as key and calculate length for each key

 let array = [{text: "ABC",someobj: {},length: 3}, {text: "XYZ",someobj: {},length: 4}, {text: "TES",someobj: {},length: 2}, {text: "ABC_VALUE",someobj: {},length: 3}, {text: "TES_VALUE",someobj: {},length: 10}, {text: "SME",someobj: {},length: 39}, {text: "SME_VALUE",someobj: {},length: 1}] let final = array.reduce((op, inp) => { let text = inp.text.split('_', 1)[0] op[text] = op[text] || 0 op[text] += inp.length return op }, {}) console.log(final)

Or if you're sure the text only differs by _value in the end then you can replace that part and use as key

 let array = [{text: "ABC",someobj: {},length: 3}, {text: "XYZ",someobj: {},length: 4}, {text: "TES",someobj: {},length: 2}, {text: "ABC_VALUE",someobj: {},length: 3}, {text: "TES_VALUE",someobj: {},length: 10}, {text: "SME",someobj: {},length: 39}, {text: "SME_VALUE",someobj: {},length: 1}] let final = array.reduce((op, inp) => { let text = inp.text.replace(/_value$/gi,'') op[text] = op[text] || 0 op[text] += inp.length return op }, {}) console.log(final)