varsel="白";vararr=["白色","黑色","红色","粉色"];//方法1for(varf1inarr){if(arr[f1].indexOf(sel)>-1){//returntruealert("true")}}//方法2for(vari=0;i-1){//returntrue}};//方法3vararr=["白色","黑色","红色","粉色"];if(arr.toString().indexOf(sel)>-1){alert("true")}