A better way to splice an array into an array in javascript

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You can use apply to avoid eval:

var args = [start, number].concat(newItemsArray);
Array.prototype.splice.apply(theArray, args);

The apply function is used to call another function, with a given context and arguments, provided as an array, for example:

If we call:

var nums = [1,2,3,4];
Math.min.apply(Math, nums);

The apply function will execute:

Math.min(1,2,3,4);

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