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g8up/validate-data-type.js

Created April 21, 2016 17:29
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验证数据类型
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validate-data-type.js
function isType( type ){
return function( val ){
return toString.call( val ) === '[object ' + type + ']';
};
}
['Object', 'Array', 'Number', 'Window'].forEach(function( type ){
window['is'+ type ] = isType( type );
});
isArray('');// false
isNumber( 1 ); //true
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g8up commented Apr 25, 2016

toString.call( document.querySelectorAll('a') )
"[object NodeList]"

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