js将html转换为纯文本

document.body.textContent//firefox浏览器document.body.innerText//适用ie webkit浏览器 document.body.innerHTML.replace(/<(style|script|iframe)[^>]*?>[\s\S]+?<\/\1\s*>/gi,'').replace(/<[^>]+?>/g,'').replace(/\s+/g,' ').replace(//g,' ').replace(/>/g,' ');