1 1、在test.html文件内，使用 div标签创建一行文字，给div标签添加一个class属性。2、在js中，通过class获得div对象，使用attr()方法设置对象的value值
UsingsetAttribute()to modify certain attributes, most notablyvaluein XUL, works inconsistently, as the attribute specifies the default value. To access or modify the current values, you should use the properties. For example, useelt.valueinstead ofelt.setAttribute('value',val). 只解释了 attr 能够...
$("input[type='checkbox']").attr("checked",false); $("input[type='checkbox']").prop("checked",false);//与.attr()效果一样 ②设置属性值: .attr(attributeName,value):这种方法设置属性值非常方便,且看: 1 $("#greatPhoto").attr("alt","come form my world!"); 设置多个属性值: 1 2...
if ( value !== undefined ) { if ( value === null ) { jQuery.removeAttr( elem, name ); return; } else if ( hooks && "set" in hooks && notxml && (ret = hooks.set( elem, value, name )) !== undefined ) { return ret; } else { elem.setAttribute( name, value + "" ); ...
1 1、创建一个test.html文件。2、在文件内，使用select标签，option标签创建一个下拉选择框。同时创建一个button按钮，用于触发执行js函数。3、在js标签内，创建函数，在函数内，通过获得select元素对象，使用find()方法通过option中的value选择器，获得指定的选项，使用attr()方法把它设置为默认显示框，即把selected...
attr(attributeName,value) attr(attributes) attr(attributeName,function) .attr(attributeName) Get the value of an attribute for the first element in the set of matched elements. 获取匹配元素集合中第一个元素的属性值 attributeName为要获取的属性名,类型为字符串 ...
$("form input") .not("[type!=text]") .css( {'background-color' : 'yellow', 'border-style' : 'dashed'}) .attr("value", "test"); 以下示例表达式将选择所有输入的字段的 type 属性等于文本和将几个 CSS 样式和值属性设置为固定值。 (请注意在示例,我使用 Not ...
The jQuery attr function sets the attribute value. (Note that jQuery selectors return an array of matched elements, which is why we use the attr function to set the attribute value rather than using the HTML DOM.) The second argument to setInterval is the number of milliseconds between callba...
The jQuery attr() method is used to get attribute values.The following example demonstrates how to get the value of the href attribute in a link:Example $("button").click(function(){ alert($("#w3s").attr("href")); }); Try it Yourself » The next chapter explains how to set ...
function setValue() { $('#text1').val('set text 1'); $('#password1').val('set password 1'); $("#selectSM").val('chooseb'); $("#selectSM option[value='choosec']").attr("selected",true); $("input[name='sex'][value='female']").attr('checked',true) ...