利用json获取字符出现次数的代码_json

 代码如下: 
function ObjRegExp(){ 
var newStr= "Drive someone up a wall"; 
newStr = newStr.replace(new RegExp(/\s/ig),""); 
var objJson = {}; 
for(var i = 0 ;i < newStr.length ; 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("
")); 
} 
} 
 
Html 如下: 
 代码如下: