1.濡備綍鍒涘緩鏁扮粍
2.濡備綍瀵規暟緇勮繘琛屾搷浣滐紙娣誨姞,鍒犻櫎,璇誨彇)
3.鏁扮粍甯歌鏂規硶鍜屽睘鎬?/p>
濡備綍鍒涘緩涓涓暟緇?涓鑸湴鏍規嵁鍒濆鍖栬瀹氱畝鍗曞垎涓?縐?
1.鍗曠函鍒涘緩鏁扮粍:
var arr=new Array();
瑕佺偣:鐢╪ew鍏抽敭瀛楀垱寤烘暟緇勫璞rray(),Array()瀵硅薄鏄竴涓湰鍦扮被,鍙互鐢╪ew鍒涘緩涓涓璞″悗浣跨敤
2.鍒涘緩鏁扮粍鐨勫悓鏃惰瀹氭暟緇勫ぇ灝?
var arr=new Array(10);//榪欓噷灝卞垱寤轟簡涓涓垵濮嬪寲澶у皬涓?0鐨勬暟緇?/p>
娉ㄦ剰:褰撲嬌鐢ㄦ暟緇勫ぇ灝忔搷浣滃垵濮嬪寲澶у皬鏃?鏁扮粍浼氳嚜鍔ㄨ鎾戝ぇ,涓嶄細鍍廋璇█閭ｆ牱鍙戠敓閿欒.鍔ㄦ佸闀挎槸js鏁扮粍鐨勪竴涓ц川.鍙﹀,js涓敮鎸佹渶澶ф暟緇勯暱搴︿負
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3.鐩存帴鍒濆鍖?
var arr=new Array("love","hate","pain");//榪欓噷灝辯洿鎺ュ垵濮嬪寲浜嗘暟緇?/p>
鎴杤ar arr=["happy","cute","scare"];//鎷彿涔熷彲浠ュ０鏄庝竴涓暟緇勫璞?/p>
褰撶劧,綾諱技C璇█,鍙互瀹氫箟2緇?緇村拰澶氱淮鐨勬暟緇?渚嬪:
<script language=Javascript>
var myArray = new Array();
for(var i=0;i<10;i++ )...{
myArray[i]=new Array();
myArray[i][0]=Math.floor(Math.random()*10);
myArray[i][1]=Math.floor(Math.random()*10);
myArray[i][2]=Math.floor(Math.random()*10);
myArray[i][3]=Math.floor(Math.random()*10);
myArray[i][4]=Math.floor(Math.random()*10);
myArray[i][5]=Math.floor(Math.random()*10);
myArray[i][6]=Math.floor(Math.random()*10);
myArray[i][7]=Math.floor(Math.random()*10);
myArray[i][8]=Math.floor(Math.random()*10);
}
myArray.sort( function(x, y) ...{
return (x[0]==y[0])?((x[4]==y[4])?(x[8]-y[8]):(x[4]-y[4])):(x[2]-y[2])
});
for(var i=0;i<myArray.length;i++ )...{
document.write(myArray[i].join(",") + "<br/>");
}
</script>
鏁扮粍鐨勫睘鎬?length
arr.length榪斿洖鏁扮粍arr鐨勯暱搴?甯歌浜庡驚鐜腑瀵規暟緇勭殑閬嶅巻,姣斿:
for(var i=0;i<arr.length;i++){
鎵ц閮ㄥ垎
}
鏁扮粍鍏冪礌鐨勮闂? arr[index],鍏朵腑index琛ㄧず绱㈠紩鍗蟲暟緇勫熀鏁?浠?寮濮?鍏辨湁arr.length涓厓绱?姣斿: arr[0]璁塊棶絎竴涓暟緇勫厓绱?arr[1]璁塊棶絎簩涓暟緇勫厓绱?...渚?/p>
嬈＄被鎺?鏁扮粍鐨勬搷浣滄柟娉?鍏堟瑙堜笅涓嬮潰鐨勮繖浜涙搷浣滄暟緇勫父鐢ㄧ殑鏂規硶(13涓?
toString(),valueOf(),toLocalString(),join(),split(),slice(),concat(),
pop(),push(),shift(),unshift(),sort(),splice()
涓嬮潰閫愪竴鍒嗘瀽榪欎簺鏂規硶鐨勫姛鑳藉拰鐢ㄦ硶.
toString(),valueOf(),toLocalString():
鍔熻兘:榪斿洖鏁扮粍鐨勫叏閮ㄥ厓绱?/p>
娉?鏁扮粍鍚嶄篃鍙互榪斿洖鏁翠釜鏁扮粍
浠ｇ爜:
var m=["am","bm","cm"];//鐢ㄦ嫭鍙峰０鏄庝竴涓暟緇勫璞?/p>
alert(m.toString());//toString()榪斿洖鏁扮粍瀵硅薄鐨勬墍鏈夊唴瀹?鐢ㄩ楀彿鍒嗗壊,鍗砤m,bm,cm
alert(m.valueOf());//valueOf()涔熻繑鍥炴暟緇勫璞＄殑鎵鏈夊唴瀹?/p>
alert(m.toLocaleString());//toLocaleString()涔熻繑鍥炴暟緇勫璞＄殑鎵鏈夊唴瀹?浣嗘湁鍦板尯璇█鍖哄埆,鏆備笉鐮旂┒
alert(m);//鏁扮粍鍚嶄篃榪斿洖鏁扮粍瀵硅薄鐨勬墍鏈夊唴瀹?/p>
join():
鍔熻兘:鎶婃暟緇勫悇涓」鐢ㄦ煇涓瓧絎?涓?榪炴帴璧鋒潵,浣嗗茍涓嶄慨鏀瑰師鏉ョ殑鏁扮粍
浠ｇ爜:
var m=["am","bm","cm"];//鐢ㄦ嫭鍙峰０鏄庝竴涓暟緇勫璞?/p>
var n=m.join("---");//鐢?--榪炴帴am,bm,cm.
alert(m.toString());//m騫舵病鏈夎淇敼,榪斿洖am,bm,cm
alert(n);//n鏄竴涓瓧絎︿覆,涓篴m---bm---cm
split():
鍔熻兘:鎶婁竴涓瓧絎︿覆鎸夋煇涓瓧絎?涓?鍒嗗壊鎴愪竴涓暟緇?浣嗕笉淇敼鍘熷瓧絎︿覆
浠ｇ爜:
var str="I love maomao,I am caolvchong";
var arr=str.split("o");//鎸夊瓧絎鎶妔tr瀛楃涓插垎鍓叉垚涓涓暟緇?/p>
alert(arr);//杈撳嚭鏁翠釜鏁扮粍
slice():榪斿洖鏌愪釜浣嶇疆寮濮?鍒版煇涓綅緗粨鏉?鐨勬暟緇勯儴鍒?涓嶄慨鏀瑰師鏁扮粍
浠ｇ爜:
var m=["am","bm","cm","dm","em","fm"];
var n=m.slice(2);//榪斿洖絎簩涓厓绱燽m鍚庨潰鐨勫厓绱?鍗砪m,dm,em,fm
var q=m.slice(2,5);//榪斿洖絎簩涓厓绱犲悗鍒扮浜斾釜鍏冪礌,鍗砪m,dm,em
alert(n);
alert(q);
鏁扮粍瀵硅薄鐨勬爤鎿嶄綔:
push():鏁扮粍鏈熬娣誨姞涓涓」
pop():鍒犻櫎鏁扮粍鏈鍚庝竴涓」
浠ｇ爜:
var m=["am","bm","cm","dm","em","fm"];
m.push("gm");//鍦ㄦ暟緇勬湯灝炬坊鍔犲厓绱爂m
alert(m);
m.pop();//鍒犻櫎鏁扮粍鏈鍚庝竴涓厓绱爂m
alert(m);
鏁扮粍瀵硅薄鐨勯槦鍒楁搷浣?
unshift():鏁扮粍澶存坊鍔犱竴涓」
shift():鍒犻櫎鏁扮粍絎竴涓」
浠ｇ爜:
var m=["am","bm","cm","dm","em","fm"];
m.unshift("gm");//鍦ㄦ暟緇勭涓涓厓绱犱綅緗坊鍔犲厓绱爂m
alert(m);
m.shift();//鍒犻櫎鏁扮粍絎竴涓厓绱爂m
alert(m);
sort():鏁扮粍鎸夊瓧絎︾殑ASCII鐮佽繘琛屾帓搴?淇敼鏁扮粍瀵硅薄
娉?鍗充究鏄暟瀛楁暟緇?涔熷皢杞寲涓哄瓧絎︿覆鏉ヨ繘琛屾瘮杈冩帓搴?/p>
浠ｇ爜:
var m=["am","fm","gm","bm","em","dm"];
m.sort();//鎸夊瓧姣嶅簭鎺掑簭
alert(m);
concat():鍦ㄦ暟緇勫熬娣誨姞鍏冪礌,浣嗕笉淇敼鏁扮粍瀵硅薄
浠ｇ爜:
var m=["am","bm"]
var n=m.concat("cm");//娣誨姞涓欏筩m,騫朵笖璧嬩簣鏂版暟緇勫璞?/p>
alert(m);//鍘熸暟緇勬病鏈夎淇敼
alert(n);//杈撳嚭鏂版暟緇勫璞?/p>
splice():鍦ㄦ暟緇勭殑浠繪剰浣嶇疆榪涜娣誨姞,鍒犻櫎鎴栬呮浛鎹㈠厓绱?鐩存帴淇敼鏁扮粍瀵硅薄
緇嗚妭:
splice()鏈変笁涓弬鏁版垨涓変釜浠ヤ笂鍙傛暟,鍓嶄袱涓槸蹇呴』鐨?鍚庨潰鍙傛暟鏄彲閫夌殑
榪涜娣誨姞:splice(璧峰欏?0,娣誨姞欏?
榪涜鍒犻櫎:splice(璧峰欏?瑕佸垹闄ょ殑欏逛釜鏁?
榪涜鏇挎崲:splice(璧峰欏?鏇挎崲涓暟,鏇挎崲欏? 榪欎釜鍏跺疄鏄坊鍔犲垹闄ょ殑鍏卞悓緇撴灉
浠ｇ爜:
var m=["am","bm"]
m.splice(1,0,"fm","sm");//鍦ㄧ涓欏瑰悗闈㈡坊鍔爁m鍜宻m,榪斿洖am,fm,sm,bm
alert(m);
m.splice(2,1);//鍒犻櫎絎簩欏瑰悗闈竴欏?鍗崇涓夐」sm,榪斿洖am,fm,bm)
alert(m);
m.splice(2,1,"mm");//鏇挎崲絎簩欏瑰悗闈竴欏?鍗崇涓夐」,榪斿洖am,fm,mm)
alert(m);
鍦ㄦ湁鐨勬暀紼嬩笂娌℃湁鎻愬埌鏁扮粍瀵硅薄錛岄兘鐢ㄨ嚜瀹氫箟鐨勬暟緇勶紝娌℃彁鍒扮殑澶ф閮芥槸鑰佺増鏈簡錛?
//瀹氫箟涓緇存暟緇?
function MArray(len){
this.length = len;
for(i=1;i<=len;i++) this[i] = 0;
return this;
}
//鍒涘緩鏁扮粍
var strarray = new MArray(9)
//璁塊棶鏁扮粍
for(aint in strarray) document.write(aint + ":" + strarray[aint] + "<br>");
//瀹氫箟浜岀淮鏁扮粍
function creatMArray(row,col){
var indx=0;
this.length=(row*10)+col
for(var x=1;x<=row;x++)
for(var y=1;y<=col;y++){
indx=(x*10)+y;
this[indx]="";
}
return this;
}
//鍒涘緩浜岀淮鏁扮粍
var xarr = new creatMArray(11,2)
//璁塊棶浜岀淮鏁扮粍
for (x in xarr) document.write(x + ":" + xarr[x] + "<br>")
]]>