var optionSorts = document.createElement("option");
for (var i=1; i<=30; i++) {
var optionSorts = document.createElement("option");
$(optionSorts).val(i)
$(optionSorts).text(i)
$('#sorts').append(optionSorts)
}
var opts=$('#sorts');
for(var opt in opts){
if(opts[opt].value = window.sort){
opts[opt].selected = "selected";
break;
}else if ( opts[opt].value = "") {
opts[opt].selected = "selected"
break
}
}
动态添加option与设置默认值
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转载自blog.csdn.net/WmingCSDN/article/details/87169492
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