超链接识别
//识别并转换文本里的超链接
transSlink(value){
let reg = /(http:\/\/|https:\/\/|www)((\w|=|\?|\.|\/|&|~|-|[\u200B-\u200D\uFEFF])+)/g;
let text = value.replace(reg, "<a href='$1$2' target='_blank'>$1$2</a>").replace(/\n/g, "<br />");
return text
},