Javascript 搜索成功后,当搜索文本框为空时,不提取所有数据列表
我必须使用javascript执行客户端搜索,我可以做到这一点,但我无法在搜索文本后获得所有数据列表 这是我的html页面:Javascript 搜索成功后,当搜索文本框为空时,不提取所有数据列表,javascript,jquery,Javascript,Jquery,我必须使用javascript执行客户端搜索,我可以做到这一点,但我无法在搜索文本后获得所有数据列表 这是我的html页面: <form> <label for="search">Search: </label> <input type="text" name="search" id="search"/> </form> <div id="new-list"> <p><b>M
<form>
<label for="search">Search: </label>
<input type="text" name="search" id="search"/>
</form>
<div id="new-list">
<p><b>My List of Data</b></p>
<ul id="list">
<li class="test">First</li>
<li class="test">Second</li>
<li class="test">fifteen</li>
<li class="test">World</li>
</ul>
</div>
搜索:
我的数据列表
首先
第二次
- 15
- 世界
我试过了,但没有得到当前的解决方案。
这是我的javascript代码
var searcher = {
ul : document.getElementById( 'list' ),
li : document.getElementById( 'list' ).children,
backup : [],
searchList : [],
showList : function ( eventObj ){
var userInput = eventObj.target.value;
console.log( userInput );console.log( this.backup );
var search = this.getRequired( userInput, this.backup );
var listToDisplay = this.textListToHtmlArray( search );
},
fillBackup: function(){
var length = this.li.length;
for( var i = 0; i < length; i++ ){
this.backup[i] = this.li[i].innerHTML;
}
},
getRequired: function( needle, haystack ){
var reg = new RegExp( '\\n' + needle, 'i' );
var i = 0, j = 0, length = haystack.length;
this.searchList = [];
// filter required array
if( needle.length !== 0 ){
for( i = 0; i < length; i++ ){
if ( reg.test(haystack[i]) ) {
this.searchList.push( haystack[i] );
}
}
return this.searchList;
}
else {
return haystack;
}
},
textListToHtmlArray: function( list ){
//clear the current list
while( this.ul.firstChild ){
this.ul.removeChild( this.ul.firstChild );
}
console.log( this.ul );
var htmlList, listText;
for( var i = 0; i < list.length; i++ ){
var htmlList = document.createElement( 'li' );
htmlList.setAttribute( 'class', 'test' );
listText = document.createTextNode( list[i]);
htmlList.appendChild( listText );
this.ul.appendChild( htmlList );
}
return htmlList;
},
init : function (){
var search = document.getElementById( 'search' );
this.fillBackup();
search.onkeyup = this.showList.bind( this );
}
};
searcher.init();
var搜索器={
ul:document.getElementById('list'),
li:document.getElementById('list').children,
备份:[],
搜索列表:[],
显示列表:功能(eventObj){
var userInput=eventObj.target.value;
console.log(userInput);console.log(this.backup);
var search=this.getRequired(userInput,this.backup);
var listToDisplay=this.textListToHtmlArray(搜索);
},
fillBackup:function(){
var length=this.li.length;
对于(变量i=0;i
请帮我找到解决办法。我对你们大家都很高兴:我尝试了很多次,但根本没有得到需要的答案。您的问题在正则表达式中,您没有在
中编写正则表达式
(var reg=new RegExp('\\n'+pinder,'i');。您必须使用var reg=new RegExp('\\b'+pinder,'i');
var搜索器={
ul:document.getElementById('list'),
li:document.getElementById('list').children,
备份:[],
搜索列表:[],
显示列表:功能(eventObj){
var userInput=eventObj.target.value;
console.log(userInput);console.log(this.backup);
var search=this.getRequired(userInput,this.backup);
var listToDisplay=this.textListToHtmlArray(搜索);
console.log(listToDisplay);
},
fillBackup:function(){
var length=this.li.length;
对于(变量i=0;i
var searcher = {
ul : document.getElementById( 'list' ),
li : document.getElementById( 'list' ).children,
backup : [],
searchList : [],
showList : function ( eventObj ){
var userInput = eventObj.target.value;
console.log( userInput );console.log( this.backup );
var search = this.getRequired( userInput, this.backup );
var listToDisplay = this.textListToHtmlArray( search );
console.log( listToDisplay );
},
fillBackup: function(){
var length = this.li.length;
for( var i = 0; i < length; i++ ){
this.backup[i] = this.li[i].innerHTML;
}
},
getRequired: function( needle, haystack ){
var reg = new RegExp( '\\b' + needle, 'i' );
var i = 0, j = 0, length = haystack.length;
this.searchList = [];
// filter required array
if( needle.length !== 0 ){
for( i = 0; i < length; i++ ){
if ( reg.test(haystack[i]) ) {
this.searchList.push( haystack[i] );
}
}
return this.searchList;
}
else {
return haystack;
}
},
textListToHtmlArray: function( list ){
//clear the current list
while( this.ul.firstChild ){
this.ul.removeChild( this.ul.firstChild );
}
console.log( this.ul );
var htmlList, listText;
for( var i = 0; i < list.length; i++ ){
var htmlList = document.createElement( 'li' );
htmlList.setAttribute( 'class', 'test' );
listText = document.createTextNode( list[i]);
htmlList.appendChild( listText );
this.ul.appendChild( htmlList );
}
return htmlList;
},
init : function (){
var search = document.getElementById( 'search' );
this.fillBackup();
console.log( this.ul );
console.log( this.li );
console.log( this.backup );
search.onkeyup = this.showList.bind( this );
}
};
console.log( searcher.li );
searcher.init();