var str = ' abc abc abd ss ';
alert(str);
var reg = /(^\s*)|(\s*$)/;
str = str.replace(reg,"");
str = str.replace(/\s{1,}/g," ");
alert(str);
alert(str);
var reg = /(^\s*)|(\s*$)/;
str = str.replace(reg,"");
str = str.replace(/\s{1,}/g," ");
alert(str);
re:
textarea.value+=""
var str = ' abc abc abd ss ';
alert(1+str+1);
var reg = /(^\s*)|(\s*$)/;
str = str.replace(reg,"");
str = str.replace(/\s{1,}/g," ");
alert(1+str+1);我再给我写的:function Trim(s) {
var value= s.match(/^\s*(\S+(\s+\S+)*)\s*$/);
return (value == null) ? "" : value[1];
}
var str1="1";
var str2=" abc abc abd ss ";
var str3="1";
var str4="清除前:"+a1+a2+a3;
var str5="清除后:"+a1+Trim(a2)+a3;
alert(str4+"\n"+str5);
var value= s.match(/^\s*(\S+(\s+\S+)*)\s*$/);
return (value == null) ? "" : value[1];
}
var str1="1";
var str2=" abc abc abd ss ";
var str3="1";
var str4="清除前:"+str1+str2+str3;
var str5="清除后:"+str1+Trim(str2)+str3;
alert(str4+"\n"+str5);.....手误
<script type="text/javascript">
function Trim(s) {
var value= s.match(/^\s*(\S+(\s+\S+)*)\s*$/);
return (value == null) ? "" : value[1].replace(/\s{1,}/g," ");
}
var str1="1";
var str2=" abc abc abd ss ";
var str3="1";
var str4="清除前:"+str1+str2+str3;
var str5="清除后:"+str1+Trim(str2)+str3;
alert(str4+"\n"+str5);
</script>
String.prototype.LRTrim = function(){
return (this.replace(/^[\s ]/g, "")).replace(/[\s ]$/g, "");
}
String.prototype.MTrim = function(){
return this.replace(/[\s ]+/g, " ");
}
var str = ' abc abc abd ss ';
alert(str.LRTrim().MTrim())