JS正则表达式实现千分位function format(val){return (val+).replace(/(\d)(?(\d{3})+$)/g, $1,)}
JS正则表达式实现千分位
function format(val){ return (val+"").replace(/(\d)(?=(\d{3})+$)/g, "$1,");} JS正则表达式实现千分位
function format(val){ return (val+"").replace(/(\d)(?=(\d{3})+$)/g, "$1,");}