How can I check if a variable is neither null or the empty string with javascript?

Question

I have been doing the following:

if (json.RowKeyNew != "") {
    updateGridMeta(entity, json.PartitionKey, json.RowKeyNew, row, tab);
}

However if the json.RowKeyNew is null then the if condition is met which is not what I want. How can I check for something that is not null and not "" ?

Asciiom · Accepted Answer · 2012-09-17 16:08:48Z

3

if (json.RowKeyNew != undefined && json.RowKeyNew != "") {};

answered Sep 17, 2012 at 16:08

Asciiom

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Basic · Accepted Answer · 2012-09-17 16:08:32Z

0

Try...

if (json.RowKeyNew) {
    updateGridMeta(entity, json.PartitionKey, json.RowKeyNew, row, tab);
}

answered Sep 17, 2012 at 16:08

Basic

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1 Comment

apsillers Over a year ago

What if json.RowKeyNew is the number zero?

Gyan Chandra Srivastava · Accepted Answer · 2012-09-17 16:13:05Z

0

if (json.RowKeyNew)

just put varible in if condition it return true if having some value else return false

answered Sep 17, 2012 at 16:13

Gyan Chandra Srivastava

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