How to Check if A Value exists in Array Jquery

Question

I have the following scenario where my parameter array contains two arrays

 <script>
  var parameter = [];
  var brand;
  var category = [];

$(function() {
    $('#brand_category').click(function(event){
      var newhtml="";
      var Html = "";
      var cat_li = "";
      var $table = $('table#tablerow')
      var added = "";

      if($('input[name=brand]:checked').length<=0)
        {
         alert("Please Select brand")

        }

      if($('input[name=category]:checked').length<=0) {

        alert("Please Select Category")
      }

      else {
        cat = $("input:checkbox[name=category]:checked").map(function() {
        return this.value;
        }).get();


        br = $("input[type='radio']:checked").map(function() {
        return this.value;
        }).get();

        var found = jQuery.inArray(br, parameter);
        console.log(found)

        parameter.push({
          brand :   br,
          category: cat,
        });
 });

</script>

the parameter dictionary looks like this

Array[2]
0: Object
brand: Array[1]
0: "spykar"
length: 1
__proto__: Array[0]
category: Array[1]
0: "Men Jeans"
length: 1
__proto__: Array[0]
__proto__: Object
1: Object
brand: Array[1]
0: "Madame"
length: 1
__proto__: Array[0]
category: Array[1]
__proto__: Object
length: 2
__proto__: Array[0]

I want to push to parameter if the value doesnt exists and if it exists then it should not push.I tried to use inArray() but it always returns -1.What can be the problem . What i want here is if the category is not already present then it should add to corresponding brand object.If present then it should not.similarly no two brands should be present

You only want to do the check for the brand or for the category as well? — NiZa, Mar 01 '16 at 08:12
What i want here is if the category is not already present then it should add to corresponding brand object.If present then it should not.similarly no two brands should be present — asing177, Mar 01 '16 at 08:25

shamsup · Answer 1 · 2016-03-01T08:21:06.977

1

Because you aren't pushing just the value of br, you're pushing the values of br and cat as an object, you can't directly compare them using inArray()

For this to work, you will need to loop through parameter and test the value of each object inside it against br

var found = -1;
for (i=0;i<parameter.length;i++){
    if (parameter[i].brand == br) {
        found = i;
    }
}

if (found < 0){
    parameter.push({
        brand: br, 
        category: cat
    });
}

edited Mar 01 '16 at 08:21

answered Mar 01 '16 at 08:14

shamsup

1,952
14
18

Not able to enter in the first if condition – asing177 Mar 01 '16 at 08:44

score 0 · Answer 2 · edited May 23 '17 at 12:17

0

Simple Solution ::

var parameter = [];

    cat = $("input:checkbox[name=category]:checked").map(function() {
    return this.value;
    }).get();


    br = $("input[type='radio']:checked").map(function() {
    return this.value;
    }).get();

$.map(parameter, function(elementOfArray, indexInArray) {

  if (elementOfArray.brand == br) {
   console.log('true');//do what you need on found

   parameter.push({
          brand :   br,
          category: cat
        });

 }else{
   console.log('false');//do what you need on not found
 }
});

ref :: this link

edited May 23 '17 at 12:17

Community

1
1

answered Mar 01 '16 at 08:12

Farveen Hassan

408
4
12

You are pushing the data before checking it – asing177 Mar 01 '16 at 09:03
The if condition is not matching ...check above – asing177 Mar 01 '16 at 09:20
i just told you the logic of the checking and pushing arry......come on i have modified it as you said please check now. – Farveen Hassan Mar 02 '16 at 07:02

score 0 · Accepted Answer · answered Mar 01 '16 at 09:42

i tried this solution after reading some answers

$.map(parameter, function(elementOfArray, indexInArray) {
      for (var key in elementOfArray.brand) {
        if (elementOfArray.brand.hasOwnProperty(key)) {
              if (elementOfArray.brand[key] == br) {
                added = true
           }
        }
      }
    });
    console.log(added);

    if (!added) {
      parameter.push({
      brand :  br,
      category: cat
    });

How to Check if A Value exists in Array Jquery

3 Answers3