替换所有html代码的特殊字符

// 翻转替换里面所有的html代码的尖括弧
function replaceRevertAllHTML(txt){
var value = txt
var leftCarr = /</g ;
var rightCarr =/>/g ;
var dan = /'/g;
var and = /&/g;
var shuang = /"/g;
value = value.replace(leftCarr, "<");
value = value.replace(rightCarr, ">");
value = value.replace(shuang, "\"");
value = value.replace(dan, "\'");
value = value.replace(and, "&");
return value;
}