best way to eliminate empty strings from an array collection using javascript

Question

best way to eliminate empty strings from an array collection using javascript

I'm currently working on a search functionality where I separate each value in an array, and it's functioning properly. The issue arises when the user enters an empty value, causing the search to break as it returns an empty string within the array collection.

Is there a method to trim or eliminate this empty value?

https://plnkr.co/edit/NXrBtMseWpKrL41K5ojp?p=preview

var idInputValue = document.getElementById("search").value.split('\n');
    console.log(idInputValue);

    if (idInputValue) {
        var ids = idInputValue;
        var queryString = "?";
        for (var i = 0; i < ids.length; i++) {
            var id = ids[i];
            if (i > 0) {
                queryString += "&";
            }
            queryString += ("id=" + id);
        }
        return queryString;
    }

javascript arrays

Answer 1

Answer №1

Give this a shot!

    for (let j = 0; j < names.length; j++) {
        let name = names[j];
        if (name && name.length > 0) {
            requestString += "name=" + name + "&";
        }
    }
    return requestString.substring(0, requestString.length-1);

See it in action: https://jsfiddle.net/codeandcloud/xy70oc3t/

Answer 2

Give this a shot!

    for (let j = 0; j < names.length; j++) {
        let name = names[j];
        if (name && name.length > 0) {
            requestString += "name=" + name + "&";
        }
    }
    return requestString.substring(0, requestString.length-1);

See it in action: https://jsfiddle.net/codeandcloud/xy70oc3t/

Answer 3

Answer №2

The purpose of the Array.prototype.filter method is to eliminate unwanted values from an array. To streamline your search function, you can modify it as follows:

function searchContent() {
  var searchTerm = document.getElementById("searchTerm");
  return "?query=" + searchTerm.value
    .split("\n")
    .filter(function(val) {
      return val !== "";
    })
    .join("&query=");
}

Answer 4

The purpose of the Array.prototype.filter method is to eliminate unwanted values from an array. To streamline your search function, you can modify it as follows:

function searchContent() {
  var searchTerm = document.getElementById("searchTerm");
  return "?query=" + searchTerm.value
    .split("\n")
    .filter(function(val) {
      return val !== "";
    })
    .join("&query=");
}

Answer 5

Answer №3

This code snippet is handy for filtering out empty input values:

var inputData = inputValue.replace(' ', '');

if(inputData == '') {
    // the string is empty
  console.log('empty value');
}

After filtering, you can iterate through each element in the array to validate them like this:

for (var index = 0; index < data.length; index++) {
    var element = data[index];
    var inputData = element.replace(' ', '');

    if(inputData !== '') {
        // the string is not empty

        if (index > 0) {
            query += "&";
        }
        query += ("element=" + element);
    }
}

Answer 6

This code snippet is handy for filtering out empty input values:

var inputData = inputValue.replace(' ', '');

if(inputData == '') {
    // the string is empty
  console.log('empty value');
}

After filtering, you can iterate through each element in the array to validate them like this:

for (var index = 0; index < data.length; index++) {
    var element = data[index];
    var inputData = element.replace(' ', '');

    if(inputData !== '') {
        // the string is not empty

        if (index > 0) {
            query += "&";
        }
        query += ("element=" + element);
    }
}

best way to eliminate empty strings from an array collection using javascript

Answer №1

Answer №2

Answer №3

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