var fruits=["Banana","Orange","Apple","Mango","Banana","Orange","Apple"];var index = fruits.indexOf("Apple");if(index>-1){//包含}
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时间:2022-12-16 03:10:39
var fruits=["Banana","Orange","Apple","Mango","Banana","Orange","Apple"];var index = fruits.indexOf("Apple");if(index>-1){//包含}