Custom method of in_array function similar to php's js array

PHP’s array function in_array() is very convenient, but JS is not. In fact, I don’t like JS arrays~

Don’t say it, just use the method

Array.prototype.in_array = function(e) 
{ 
for(i=0;i<this.length;i++) 
{ 
if(this[i] == e) 
return true; 
} 
return false; 
}

or

Array.prototype.in_array = function(e) 
{ 
for(i=0;i<this.length && this[i]!=e;i++); 
return !(i==this.length); 
}

both of which are fine. In fact, it’s just the same form, just written in different ways.

Of course, there is another method that I recommend,

Array.prototype.S=String.fromCharCode(2); 
Array.prototype.in_array=function(e) 
{ 
var r=new RegExp(this.S+e+this.S); 
return (r.test(this.S+this.join(this.S)+this.S)); 
}

I personally like this better, it doesn’t matter if you don’t understand it, you can just use the code I wrote, quack. .

Just check the simulated data

var aa = new Array(1,2,'aa','bbb',4,5); 
alert(aa.in_array(3)); 
alert(aa.in_array('aa'));

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