return textbox.value.substring(textbox.selectionStart, textbox.selectionEnd); } else if (document.selection) { return document.selection.createRange().text; } } var textbox = document.forms[0].elements["textbox1"]; EventUtil.addHandler(textbox, "select", function (event) { console.log(getS...
if (typeof textbox.selectionStart == "number"){ return textbox.value.substring(textbox.selectionStart, textbox.selectionEnd); } else if (document.selection){ return document.selection.createRange().text; } } 1. 2. 3. 4. 5. 6. 7. (4)选择部分文本 setSelectionRange():选择部分文本 两个...
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document.getElementById('textbox_id').value// 获取指定 id 的内容 实例 document.getElementById("searchTxt").value; 尝试一下 » 注意:以下方法 2、3、4 和 6 返回元素的集合, 通过索引[index]来获取制定元素,第一个元素使用[0],第二个元素使用[1],以此类推... 方法2 使用以下方法返回 HTMLCollec...
functiongetSelectedText(textbox){ returntextbox.value.substring(textbox.selectionStart, textbox.selectionEnd); } IE8 及更早的版本中有一个 document.selection 对象,其中保存着用户在整个文档范围内选择 的文本信息;兼容IE8的写法 functiongetSelectedText(textbox){if(typeoftextbox.selectionStart == "number...
Multiline TextBox control documentation Get and set text box value Easily set or retrieve the value in the JavaScript Text Box control to process it. Enable the clear button to allow users to reset the input value. Clear button documentation ...
event=EventUtil.getEvent(event);vartarget =EventUtil.getTarget(event);if(/[^\d]/.test(target.value)){ target.style.background= 'red'; }else{ target.style.background= ''; } }); EventUtil.addHandler(textbox,"change",function(event){ ...
var textbox = document.forms[0].elements["firstText"];EventUtil.addHandler(textbox,"keypress",function (event) {event = EventUtil.getEvent(event); var charCode = EventUtil.getCharCode(event); if (!/\d/.test(String.fromCharCode(charCode)) && charCode > 9 && !event.ctrlKey){ Eve...
当使用javascript或jQuery设置TextBox的值时,可以通过触发onchange事件来实现相应的逻辑。例如,可以通过以下代码设置TextBox的值并触发onchange事件: 代码语言:javascript 复制 // 使用javascript设置TextBox的值 document.getElementById("textboxId").value = "新的值"; // 触发onchange事件 document.getElement...
var form=document.getElementById("form"); var textbox=form.elements[0];//取得表单中的第一个字段 EventUtil.addHandler(textbox,"focus",function(event){ event=EventUtil.getEvent(event); var target=EventUtil.getTarget(event); target.select...