DWRUtils API 使用方法

$("precloneNode1suf") 取得該對象;

DWRUtil.selectRange("selectRangeBasic", 5, 15) 選中selectRangeBasic文本框裏面從第五個字符到第15個字符之間的字符.

DWRUtil._getSelection("selectRangeBasic") 得到selectRangeBasic文本框裏選中的字符.

var arrayFive = [ 'One', 'Two', 'Three', 'Four', 'Five' ];
DWRUtil.addOptions('addOptionsBasic', arrayFive); 將數組添加到下拉菜單裏面去;

DWRUtil.getValue('addOptionsBasic') 得到 addOptionsBasic 對象的值;
DWRUtil.getValue("precloneNode1Inner1suf", { textContent:true }); 後面加個參數,在 precloneNode1Inner1suf元素爲"UL" 時,它返回了元素裏面得值,也就是說去掉了HTML標籤部分.

DWRUtil.getText('addOptionsBasic') 得到下拉框 addOptionsBasic 顯示的文本;

var arrayObject = [
{ name:'One', value:'1' },
{ name:'Two', value:'2' },
{ name:'Three', value:'3' },
{ name:'Four', value:'4' },
{ name:'Five', value:'5' }
];
DWRUtil.addOptions('addOptionsObject1', arrayObject, "name"); 將數組添加到下拉菜單裏面去;後面的參數是確定那個是給用戶顯示的文本,同時也是值;

DWRUtil.addOptions('addOptionsObject1', arrayObject, "name","value"); 同上,不過後面參數是: 3=文本;4=值;

var map = { one:1, two:2, three:3, four:4, five:5 };
DWRUtil.addOptions('addOptionsMap1', map); 同上, one 是值;1 是文本;
DWRUtil.addOptions('addOptionsMap1', map,true); 同上, 1 是值;one 是文本;

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<ul id="removeItems">
<li>One</li><li>Two</li><li>Three</li><li>Four</li><li>Five</li>
</ul>

如果是列表顯示,如上;則上面所有方法和select 下拉框使用一樣;
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DWRUtil.cloneNode('cloneNode1', { idPrefix:'pre', idSuffix:'suf' });克隆一個節點,參數一爲要克隆的節點的id,第二個參數是在克隆的節點id前面加pre,後面加suf.(注意:如果該節點有子節點的話,子節點的名字也一樣加)

DWRUtil.addRows(id, array, cellfuncs, [options]);
原理:

for each member in array
for each function in cellfuncs
create cell from cellfunc(array[i])
循環數組,循環函數,建立單元調用函數;(順序決定)

例如:
DWRUtil.addRows('addRowsBasic', arrayFive, [
function(data) { return data; },
function(data) { return data.toUpperCase(); },
function(data) {
var input = document.createElement("input");
input.setAttribute("type", "button");
input.setAttribute("value", "DOM Test");
input.setAttribute("onclick", "alert('" + data + "');");
return input;
},
function(data) { return "<input type='button' value='innerHTML Test' onclick='alert(/"" + data + "/");'>"; }
]);

高級部分:
第四個參數爲對單元的高級操作,主要下面的兩個方法;
function defaultRowCreator(options) {
return document.createElement("tr");
};

function defaultCellCreator(options) {
return document.createElement("td");
};

例子:
DWRUtil.addRows( "demo2",[ 'Africa', 'America', 'Asia', 'Australasia', 'Europe' ] , cellFuncs, {
rowCreator:function(options) {
var row = document.createElement("tr");
var index = options.rowIndex * 50;
row.style.color = "rgb(" + index + ",0,0)";
return row;
},
cellCreator:function(options) {
var td = document.createElement("td");
var index = 255 - (options.rowIndex * 50);
td.style.backgroundColor = "rgb(" + index + ",255,255)";
td.style.fontWeight = "bold";
return td;
}
});

其中 options 參數的屬性可用的爲:(沒試過,自己試試吧)

rowData: the element value from the array (the same for all cells in a row)
rowIndex: the key (if map) or index (if array) from the collection
rowNum: The row number counting from 0 in this section (so if you are using tbody, it counts rows in the tbody and not the whole table)
data: The 'computed' data value for the cell (cellCreators only)
cellNum: The cell number that we are altering counting from 0 (cellCreators only)


DWRUtil.setValues(); 批量設置值;
var settings = {
setValuesDiv:"setValuesDiv",
setValuesSpan:"setValuesSpan",
setValuesSelect:"two",
setValuesText:"setValuesText",
setValuesPassword:"AB",
setValuesTextarea:"setValuesTextarea",
setValuesButton1:"B1-Two",
setValuesButton2:"B2-Two",
setValuesRadio1:true,
setValuesRadio2:false,
setValuesRadio3:"one",
setValuesRadio4:"two",
setValuesCheckbox1:true,
setValuesCheckbox2:false
};
DWRUtil.setValues(settings);

DWRUtil.getValues(empty);批量獲取值;
var empty = {
setValuesDiv:null,
setValuesSpan:null,
setValuesSelect:null,
setValuesText:null,
setValuesPassword:null,
setValuesTextarea:null,
setValuesButton1:null,
setValuesButton2:null,
setValuesRadio1:null,
setValuesRadio2:null,
setValuesRadio3:null,
setValuesRadio4:null,
setValuesCheckbox1:null,
setValuesCheckbox2:null
};
DWRUtil.getValues(empty);

DWRUtil.useLoadingMessage("Ping");//類似gmail那個樣子,在右上角顯示加載"ping";可用自定樣式,具體查詢;http://getahead.ltd.uk/dwr/browser/util/useloadingmessage

DWRUtil.toDescriptiveString("id",數字);彈出調試信息,數字爲0,1,2.一級比一級高.

DWRUtil.onReturn(event, submitFunction);一般在form表單裏面,防止在文本框上按回車就提交表單.
例如:
<input type="text"
onkeypress="DWRUtil.onReturn(event, submitFunction)"/>
<input type="button" onclick="submitFunction()"/>