JSFiddle - React, Tailwind, and code Playground

JavaScript

var testObj={
    title: 'fsdfsd',
    titleZh: 'fsdfsd',
    body: 'fsdf',
    bodyZh: 'sdfsdf',
    imageIds: '/uploads/tmp/image-3.png',
    imageIdsZh: '' 
}

function fetch(obj, str){
    var key, results=[];
    for(key in obj){
       obj.hasOwnProperty(key) && key.indexOf(str)=== 0 && results.push([key, obj[key]]);
    }
    return results;
}
                                                                             
alert(fetch(testObj, 'imageId').toSource());