$. Grep () Filtering Function Array filtering in jQuery

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var = $.grep([1,32,5,63,8,4,-8,-5,2,56,9,62,-6],function (n , i){ if(n>50){ return n; } }); console.log(test);
 
 
 ---->[63,56,62]

$. Grep (array, callback, [invert]) contains two parameters: the first parameter is the array to be filtered, the second parameter is the filter condition, and the third parameter (optional) to retain the element (true) or delete the element (false ).

var = $.grep([1,32,5,63,8,4,-8,-5,2,56,9,62,-6],function (n , i){ if(n>50){ return n; } }，true); console.log(test); ---->[63,56,62]

var = $.grep([1,32,5,63,8,4,-8,-5,2,56,9,62,-6],function (n , i){ if(n>50){ return n; } }，false); console.log(test); ---->[1,32, 5,8,4,-8,-5,2,9,-6]

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