Wix Velo debugging

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Hi, you can try something like this

import wixData from"wix-data";

let timerID = -1;
$w.onReady(function () {
    $w('#iTitle').onKeyPress((event)=>{
        if(timerID>0){
            //reset the timer if 2 keys are pressed in < 200ms
            clearTimeout(timerID)
        }
        timerID = setTimeout(() => {
            //executed 200 ms after the last input key
            filter(event.target.value); 
        }, 200);
    })
});
let lastFilterTitle;
function filter(title) {
    if(lastFilterTitle !== title) {
        lastFilterTitle = title;
        $w('#dataset1').setFilter(wixData.filter().contains('title', title));
    }
}

Probably in the filter.contains you have to use the column key ‘title’ instead of ‘Title’