grep过滤

来源:互联网 发布:gson遍历json 编辑:程序博客网 时间:2024/05/21 13:53
<html lang="en"><head>  <meta charset="utf-8">  <title>jQuery.grep demo</title>  <style>  div {    color: blue;  }  p {    color: green;    margin: 0;  }  span {    color: red;  }  </style>  <script src="https://code.jquery.com/jquery-1.10.2.js"></script></head><body> <div></div><p></p><span></span><a href=""></a> <script>var arr = [ 1, 9, 3, 8, 6, 1, 5, 9, 4, 7, 3, 8, 6, 9, 1 ];$( "div" ).text( arr.join( ", " ) );//1, 9, 3, 8, 6, 1, 5, 9, 4, 7, 3, 8, 6, 9, 1 arr = jQuery.grep(arr, function( n, i ) {  return ( n !== 5 && i > 4 );});$( "p" ).text( arr.join( ", " ) );//1, 9, 4, 7, 3, 8, 6, 9, 1 arr = jQuery.grep(arr, function(n,i) {  return true;});$( "span" ).text( arr.join( ", " ) );//1, 9, 4, 7, 3, 8, 6, 9, 1arr=jQuery.grep(arr,function(n,i){    return false;});$( "a" ).text( arr.join( ", " ) );//空</script> </body></html>
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