JavascriptjQuery compare input value to array - Stack Overflow

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I'm relatively new to javascript and jquery. Right now I have a list of words in a txt file. I store this list in an array, and I want to pare the contents of that array to some user input. If there's a match, that specific word should be displayed.

I also use Jasny Bootstrap to perform some typeahead functions to predict which words the user would like to search for.

In the current stage, my function finds matches on the first input character. When using more characters the function returns that no match has been found. Why is that?

Here's my HTML:

<div class="container">

  <div class="appwrapper">
    <div class="content">
        <h3>OpenTaal Woordenboek</h3>
        <p>Voer uw zoekopdracht in:<p>
        <p><input name="searchinput" id="searchinput" data-provide="typeahead" type="text" placeholder="Zoeken...">
    <p class="dict"></p>
    </div>
  </div>

</div> <!-- /container -->

And here's the jQuery:

<script src="bootstrap/js/jquery.js"></script>
<script src="bootstrap/js/bootstrap-typeahead.js"></script>

<script type="text/javascript">
var data;
var myArray = [];
var txtFile = new XMLHttpRequest();
        txtFile.open("GET", "OpenTaal-210G-basis-gekeurd.txt", true);
        txtFile.onreadystatechange = function() {
    if (txtFile.readyState === 4) {  // Makes sure the document is ready to parse.
            if (txtFile.status === 200) {  // Makes sure it's found the file.
            allText = txtFile.responseText;
            data = txtFile.responseText.split("\n"); // Will separate each line into an array
            myArray = [data];
        } //"\r\n" 
    }
}
//console.write(data);

searchinput.onkeypress = function() {
//alert("The function is working!");
var formInput = document.getElementById("searchinput").value;

   if (myArray == formInput) {
   alert("There's a match!");
   $('.dict').append('<div class="result">' + myArray + '</div>')
   } else {
      alert("No match has been found..");
   }
 };

I'm relatively new to javascript and jquery. Right now I have a list of words in a txt file. I store this list in an array, and I want to pare the contents of that array to some user input. If there's a match, that specific word should be displayed.

I also use Jasny Bootstrap to perform some typeahead functions to predict which words the user would like to search for.

In the current stage, my function finds matches on the first input character. When using more characters the function returns that no match has been found. Why is that?

Here's my HTML:

<div class="container">

  <div class="appwrapper">
    <div class="content">
        <h3>OpenTaal Woordenboek</h3>
        <p>Voer uw zoekopdracht in:<p>
        <p><input name="searchinput" id="searchinput" data-provide="typeahead" type="text" placeholder="Zoeken...">
    <p class="dict"></p>
    </div>
  </div>

</div> <!-- /container -->

And here's the jQuery:

<script src="bootstrap/js/jquery.js"></script>
<script src="bootstrap/js/bootstrap-typeahead.js"></script>

<script type="text/javascript">
var data;
var myArray = [];
var txtFile = new XMLHttpRequest();
        txtFile.open("GET", "OpenTaal-210G-basis-gekeurd.txt", true);
        txtFile.onreadystatechange = function() {
    if (txtFile.readyState === 4) {  // Makes sure the document is ready to parse.
            if (txtFile.status === 200) {  // Makes sure it's found the file.
            allText = txtFile.responseText;
            data = txtFile.responseText.split("\n"); // Will separate each line into an array
            myArray = [data];
        } //"\r\n" 
    }
}
//console.write(data);

searchinput.onkeypress = function() {
//alert("The function is working!");
var formInput = document.getElementById("searchinput").value;

   if (myArray == formInput) {
   alert("There's a match!");
   $('.dict').append('<div class="result">' + myArray + '</div>')
   } else {
      alert("No match has been found..");
   }
 };

• javascript
• jquery
• arrays
• pare

Share Improve this question Follow asked Sep 23, 2013 at 17:24 ForzaForza 1,64933 gold badges3131 silver badges5252 bronze badges 4

• You're intentionally paring the entire myArray to a single formInput value? – Blazemonger Commented Sep 23, 2013 at 17:27
• I think I have to iterate over the myArray to search for a match. But I don't quite know how to do this in javascript – Forza Commented Sep 23, 2013 at 17:28
• 2 just a tip... if you use jquery you're better of replacing your XMLHttpRequest with jquery code (ie $.ajax) – kasper Taeymans Commented Sep 23, 2013 at 17:28
• Thx for the tip kasper. Will have a look at that :) – Forza Commented Sep 23, 2013 at 17:44

Add a ment  | 

3 Answers 3

Sorted by: Reset to default 3

You didn't use jquery, just native javascript.

After your script reading file, just do:

$(searchinput).on("keypress", function() {
   if ($.inArray(formInput,myArray) > -1) {
      alert("There's a match!");
   }
});

UPDATE

$(searchinput).on("blur", function() {
   if ($.inArray(formInput,myArray) > -1) {
      alert("There's a match!");
   }
});

You need to search the entire array, not just pare it to the value:

if ($.inArray(formInput,myArray)>=0) { // returns -1 if no match
   alert("There's a match!");

http://api.jquery./jQuery.inArray/

Loop through the array and match the input value with array elements like :

   for(var i in myArray) {
       var arrayElement = myArray[i];
       if (arrayElement == formInput) {
            //Do your stuff
       }
   }

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