前端之家收集整理的这篇文章主要介绍了
通过Javascript正则表达式匹配迭代修改原始字符串，
前端之家小编觉得挺不错的，现在分享给大家，也给大家做个参考。
只是想知道在字符串上替换匹配的最佳方法.
value.replace("bob","fred");
例如,工作,但我希望每个“bob”实例替换为我存储在数组中的随机字符串.只是进行正则表达式匹配会返回匹配的文本,但不允许我在原始字符串中替换它.有一个简单的方法吗？
例如,我希望字符串：
"Bob went to the market. Bob went to the fair. Bob went home"
也许会弹出来
"Fred went to the market. John went to the fair. Alex went home"
最佳答案
您可以使用
函数调用的值替换：
var names = ["Fred","John","Alex"];
var s = "Bob went to the market. Bob went to the fair. Bob went home";
s = s.replace(/Bob/g,function(m) {
return names[Math.floor(Math.random() * names.length)];
});
这给出了例如：
"John went to the market. Fred went to the fair. John went home"
