javascript提取字符

Question

如下字符串："<begin>2014<f>年小幅下降为9<begin>2014<f>你好啊啊啊啊啊<begin>+<f>顶顶顶顶"
将<begin>与<f>与他们之间的内容提取出来？哪位知道怎么做？

Answer 1

var myRe = /\<begin\>([\s\S]+?)\<f\>/g;
var str = '<begin>2014<f>年小幅下降为9<begin>2014<f>你好啊啊啊啊啊<begin>+<f>顶顶顶顶';
var myArray;
var index=0;
while ((myArray = myRe.exec(str)) !== null) {
  index++;
  console.log(myArray)
  var msg = '匹配'+index+':' + myArray[1] + '. ';
  console.log(msg);
}

Answer 2

var str = '<begin>2014<f>年小幅下降为9<begin>2014<f>你好啊啊啊啊啊<begin>+<f>顶顶顶顶';
str.match(/(?<=\<begin\>)([^<]+)(?=\<f\>)/g);