利用json获取字符出现次数的代码_json

function ObjRegExp(){
var newStr= "Drive someone up a wall";
newStr = newStr.replace(new RegExp(/\s/ig),"");
var objJson = {};
for(var i = 0 ;i var objChar = newStr.charAt(i);
if(objJson[objChar]){
objJson[objChar] = parseInt(objJson[objChar]) + 1;
}else{
objJson[objChar] = 1;
}
}
var oDiv = document.getElementById("objDiv");

oDiv.appendChild(document.createTextNode("Drive someone up a wall!"));
oDiv.appendChild(document.createElement("
"));

for(var key in objJson){
oDiv.appendChild(document.createTextNode(key +":"+ objJson[key]));
oDiv.appendChild(document.createElement("
"));
}
}