JavaScript正则表达式文字在函数调用之间持续存在

I have this piece of code:

我有这段代码：

function func1(text) {

    var pattern = /([\s\S]*?)(\<\?(?:attrib |if |else-if |else|end-if|search |for |end-for)[\s\S]*?\?\>)/g;

    var result;
    while (result = pattern.exec(text)) {
        if (some condition) {
            throw new Error('failed');
        }
        ...
    }
}
function