javascript获取两组字符之间的子字符串-javascriptgetsubstringbetweentwosetsofcharacters

2  

You could search for the pattern {{appName}} and take all characters who are not quotes. Then take the second element of the match.

您可以搜索模式{{appName}}并获取所有不是引号的字符。然后拿下比赛的第二个元素。

var string = '
',
    substring = (string.match(/\{\{appName\}\}([^"]+)/) || [])[1]

console.log(substring);

2  

You can do this with three methods

您可以使用三种方法完成此操作

// 1 option For single match

// 1选项用于单场比赛

var regex = /\{\{appName\}\}([^"]+)/;
var myString = '
';
console.log(myString.match(regex)[1]);

// 2 option For multiple matches

// 2选项用于多个匹配

var regex = /\{\{appName\}\}([^"]+)/g;
var myString = '
';
var temp;
var resultArray = [];
while ((temp = regex.exec(myString)) != null) {
    resultArray.push(temp[1]);
}
console.log(resultArray);

// 3 option For indexOf

// 3选项对于indexOf

var firstIndex= myString.indexOf("{{appName}}");
var lastIndex =firstIndex+ myString.substring(firstIndex).indexOf('"/>')
var finalString = myString.substring(firstIndex,lastIndex).replace("{{appName}}","");
console.log(finalString);