javaScriptの実現StrigBuffer

762 ワード

JavaScript html プロトタイプ

<html>
<script>
 function StringBuffer(){  
     this.string = new Array; //  Array         
 }  
   
 StringBuffer.prototype.append = function(str){ //   str          
     this.string .push(str);  
 }  
   
 StringBuffer.prototype.toString = function(){ // join            
     this.string.join("");  
 }  
var oBuffer = new StringBuffer();
d1 = new Date();
for (var i=0; i < 10000; i++) {
oBuffer.append("text");
}
var sResult = oBuffer.toString();
d2 = new Date();
document.write(d2.getTime()-d1.getTime());
</script>
<body>

</body>
</html>

javascript数字は0を補います.