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bennetonss

How to remove undefined item from array.

in Using jQuery • 8 years ago

I have an array of the type,

myArray = [

["string1" + variable1],

["string2" + variable2]

];

the variable following the string is based on value selected via form.

i.e.

var variable1 = $('input[name="var1"]').val();

var variable2 = $('input[name="var2"]').val();

How can i remove a particular array that has value undefined / .val() == "" ,from the main array?

For example, in the form if variable2 = ""/undefined/not given any value by the user,

my Array becomes,

myArray = [

["string1" + variable1]

];

Replies(4)

jakecigar

Re: How to remove undefined item from array.

8 years ago

You should not put the undefined values in the array, just put the defined values in.

myArray = []
if ( variable1) myArray.push( ["string1" + variable1])
if ( variable2) myArray.push( ["string2" + variable2])

JΛ̊KE

bennetonss

Re: How to remove undefined item from array.

8 years ago

Sorry Jake, I am late.

I tried this in jsfiddle,

http://jsfiddle.net/newbie_ready_to_learn/334n5ncg/

If i make the second checkbox checked, it shows correct,

http://jsfiddle.net/newbie_ready_to_learn/Lccftwj6/

Can you please tell me what is wrong.

The script looks like this,

$(document).ready(function () {

var string1 = "string1";

var string2 = "string2";

var value1 = $('input[name="value1"]').val();

var value2 = $('input[name="value2"]').val();

var baoBao = $('input[name="value1"]');

var caoCao = $('input[name="value2"]');

var myArray = []

if (baoBao.is(':checked')) {

myArray.push(string1 + value1);

} else {

myArray = [];

}

if (caoCao.is(':checked')) {

myArray.push(string2 + value2);

} else {

myArray = [];

}

alert(myArray);

});

</script>

jakecigar

Re: How to remove undefined item from array.

8 years ago

Elses? You don’t need no stinkin’ elses.

http://jsfiddle.net/jakecigar/Lccftwj6/1/

if (baoBao.is(':checked')) {

myArray.push(string1 + value1);

}

if (caoCao.is(':checked')) {

myArray.push(string2 + value2);

}

JΛ̊KE

bennetonss

Re: How to remove undefined item from array.

8 years ago

Thanks Jake!

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