Tips on interpreting JSON objects and cross-referencing them with user input

I am currently developing an application where specific values are stored in JSON format and I aim to access these values through indexes rather than hard coding them. Below is a snippet of my HTML file combined with JavaScript:

<html>
<head>
    <title> My Dictionary </title>
    <script type="text/javascript">

    function search(){
        var myDictionary = 
        {"Apple": 
           {"Meaning": "Fruit", "Category": "Sweet", "Pronounciation": "Apple"} 
           ,
        "Apples":
           {"Meaning": "Fruit", "Category": "Sweet", "Pronounciation": "Apple"}}
        };

        var v= document.getElementById("search").value;
    }
    </script>    
</head>          
<body>           
    Enter your Text: <input type="text" id="search" name="search"  />
    <input type="button" value="search" onclick="search();" />

</body>
</html>

My objective is to compare the user input value with the data stored in the JSON format. For example, if the user enters "Apples," how can I validate this against the values within the array?

Answer №1

There are various methods to achieve this task efficiently, and one possible approach is by iterating through the myDictionary array and verifying if the property v exists by utilizing a combination of typeof and bracket notation. Here's an illustration:

let output;
for (let index = 0; index < myDictionary.length; index++)
{
    if (typeof myDictionary[index][v] === "object")
    {
        output = myDictionary[index];
        break;
    }
}

In my experiment, I loaded your myDictionary object into the console, assigned a value of "Apple" to v, executed the code, and successfully fetched the Apple object in the result variable. It's crucial to remember that JavaScript distinguishes between uppercase and lowercase letters in variables/properties. Hence, ensuring all dictionary keywords are in lowercase form and using v.toLowerCase() can help manage this issue.

Feel free to share your thoughts or queries with me :)

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