How to check the value is null and zero in java script
var result;
if(result!==null)
I had tried please specify to check whether the value is zero
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And also for undefined variable check – Naveen kumar Sep 18 '18 at 11:23
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how to check variable value is not defined and null in java script – Naveen kumar Sep 18 '18 at 11:25
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2Possible duplicate of [How to determine if variable is 'undefined' or 'null'?](https://stackoverflow.com/questions/2647867/how-to-determine-if-variable-is-undefined-or-null) – mpm Sep 18 '18 at 11:25
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For checking value iszero when variable is defined – Naveen kumar Sep 18 '18 at 11:27
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1@Naveenkumar then use `=== 0` – Denys Séguret Sep 18 '18 at 11:29
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I can use === 0 or >== 0 in vue js – Naveen kumar Sep 18 '18 at 11:31
1 Answers
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You can use something like
if((x >= 0) && (typeof(result) == "number"))
Seems to have been answered here ::: Check for NaN, null and >=0 in one condition
WarPro
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@Naveenkumar Vue.js is a *JavaScript* framework, you can thus use *JavaScript* to specify conditions. – str Sep 18 '18 at 11:39
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which is best x !== null or x != null for verifying not defined and null value – Naveen kumar Sep 18 '18 at 12:02
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