When jQuery sets the radio value, use eq to replace nth

This article introduces how to replace nth with eq when jQuery sets the radio value. I hope this article will help you.

Example

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<P> <Label for = ""> Gender: </label> <Span> <Em> male </em> <Input type = "radio" name = "sex" value = "male"/> </Span> <Span> <Em> female </em> <Input type = "radio" name = "sex" value = "female"/> </Span> </P>

When jQuery sets the radio value, we can see that someone uses the nth method.

Use nth

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$ ('Input: radio [name = sex]: nth (0) '). attr ('checked', true );

In fact, nth and eq are the same and can be replaced with eq.

Use eq

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Var sex = 'female '; If (sex = 'male '){ $ ("Input: radio [name = 'sex ']: eq (0)"). attr ('checked', true ); } Else { $ ("Input: radio [name = 'sex ']: eq (1)"). attr ('checked', true ); }

In jQuery source code, we can see that nth is not recommended for use. If used, it will be converted to eq.

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// Deprecated Expr. pseudo dos ["nth"] = Expr. pseudo dos ["eq"];