html - How to do mutiple css class in one line javascript code -


i have css class names - .exp-1 , .exp-2, .exp-3 , exp-4 ... there simple way write these in onlike line ,i m beginner javascript 

document.getelementsbyclassname("exp-1")[0]; document.getelementsbyclassname("exp-2")[0]; document.getelementsbyclassname("exp-3")[0]; document.getelementsbyclassname("exp-4")[0];

to

 document.getelementsbyclassname("exp-1,exp-2,exp-3, exp-4")[0];

you can use queryselector , use css selectors. returns first element of selected elements. if want return can use queryselectorall

 document.queryselector(".exp-1,.exp-2,.exp-3,.exp-4");

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