直接记录下来避免下次遇到，有点费时间了！！
https://www.cnblogs.com/eager/p/7133270.html
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<select id="selectSM"></select> |
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for(var i=0;i<=obj2.length;i++) { $("#selectSM").find("option[value = '"+obj2[0].id+"']").attr("selected","selected"); $("#selectSM").append("<option value="+obj2[i].id+">"+ obj2[i].name+"</option>"); } |
