js中indexOf()对字符串进行部分匹配

something

do something

something

do something

something

do something

$(function(){
$('dl').each(function(){
var classStr = $(this).attr('class');
if ( classStr.indexOf("1") > 0 ) {
console.log("该class含有1");
}
if( classStr.indexOf("4") > 0 ) {
console.log("该class含有4");
}
if( classStr.indexOf("7") > 0 ) {
console.log("该class含有7");
}
});
})