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Determine the data type of javascript (sample code)_javascript skills

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Release： 2016-05-16 17:09:43
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1 Determine whether it is an array type

Copy code The code is as follows:

< script type="text/javascript">
//var a=[0];
document.write(isArray(a),'
');
function isArray(obj){
return (typeof obj=='object')&&obj.constructor==Array;
}
//]]>
< /script>

2 Determine whether it is a string type
Copy code The code is as follows:



3 Determine whether it is a numeric type
Copy code The code is as follows:



5 Determine whether it is a function
Copy code The code is as follows:



6 Determine whether it is an object
Copy code The code is as follows:


Related labels：
javascript Type judgment
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