js中如何利用正则匹配多个全部数据

正则表达式后面加g表示多次匹配

方式一：match

返回数组

方式二

exec

实例如下：

<script>

   

 var str='<a href="//www.aliexpress.com/store/product/OOOT-BAORJCT-174296-22mm-10yard-lot-cartoon-Ribbons-Thermal-transfer-Printed-grosgrain-Wedding-Accessories-DIY-handmade/2349150_32810795709.html" rel="external nofollow" rel="external nofollow" title="OOOT BAORJCT 174296 22mm 10yard/lot cartoon Ribbons Thermal transfer Printed grosgrain Wedding Accessories DIY handmade material">OOOT BAORJCT 174296 22mm 10yard/lot cartoon Ribbons...</a><a href="//www.aliexpress.com/store/product/OOOT-BAORJCT-174296-22mm-10yard-lot-cartoon-Ribbons-Thermal-transfer-Printed-grosgrain-Wedding-Accessories-DIY-handmade/2349150_32810795709.html" rel="external nofollow" rel="external nofollow" title="999OOOT BAORJCT 174296 22mm 10yard/lot cartoon Ribbons Thermal transfer Printed grosgrain Wedding Accessories DIY handmade material">OOOT BAORJCT 174296 22mm 10yard/lot cartoon Ribbons...</a>';

var reg=/title="(.*?)">/g;

var res = str.match(reg);

console.log(str.match(reg));

   

while( res = reg.exec(str))

{

 console.log(res[1]);

}

</script>