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Convert Form Fields Into Json Object

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I have the following form:

); } else { o[this.name] = this.value || ''; } }); return o; };

Solution 2:

My variant:

arr = $("#myForm").serializeArray();

var res={};
var m,o;
arr.forEach(function(item){
	m = item.name.match(/[^\]\[]+/g);
	o = res;
	m.forEach(function(v,i,a){
		if(o[v] === undefined) {
			if(i+1 !== a.length) {
				o[v] = {};
				o = o[v];
				return;
			}
			o[v] = [item.value];
		} else {
			if(i+1 !== a.length) {
				o = o[v];
				return;
			}
			o[v].push(item.value);
		}
	});
})

console.log(res)
$('<pre>'+JSON.stringify(res)+'</pre>').appendTo('#result')
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<body>
<form id="myForm" method="POST">        
    <input type="text" name="matrix[]" value="1"/><br/>
    <input type="text" name="matrix[]" value="2"/><br/>
    <input type="text" name="matrix[]" value="3"/><br/>     
    <input type="text" name="multi_matrix[colors][]" value="red"/><br/>
    <input type="text" name="multi_matrix[colors][]" value="blue"/><br/>        
    <input type="text" name="multi_matrix[weight][]" value="75"/><br/>
    <input type="text" name="multi_matrix[weight][]" value="83"/><br/>     
    <input type="text" name="multi_matrix[weight_real][]" value="83.32"/><br/>   
    <input type="text" name="multi_matrix[weight_real][]" value="83.65"/><br/>       
    <input type="text" name="multi_matrix[price][unreal][]" value="383.32"/><br/>   
    <input type="text" name="multi_matrix[price][unreal][]" value="183.65"/><br/>    
    <input type="submit" value="Send">
</form>
<div id="result"></div>
{
    "matrix": ["1", "2", "3"],
    "multi_matrix": {
        "colors": ["red", "blue"],
        "weight": ["75", "83"],
        "weight_real": ["83.32", "83.65"],
        "price": {
            "unreal": ["383.32", "183.65"]
        }
    }
}

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