jquery $.trim()方法使用示例

今天有幸被召回母校给即将毕业的学弟学妹们讲我这两年的工作史,看了下母校没啥特别的变化,就是寝室都安了空调,学妹们都非常漂亮而已。。好了不扯蛋了,说下今天的主题吧。这些天我在深度定制语法高亮功能的同时发现了博客园提供的一些有意思的函数,甚至有几个博客园都没用到,我也不知道怎么才能触发那些功能。。打开这个js就可以看到很多好用的东西了,虽然写的不怎么样,但是至少有这些功能。 ps: 推荐安装一个代码格式化的插件,否则一坨看着蛋疼。比如第一个就是 log,方便调试。

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时间: 2024-12-11 03:07:45

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ECMAScript 5 为所有字符串定义了trim()方法.这个方法会创建一个字符串的副本,删除前置以及后缀的所有空格,然后返回结果.例如: var stringValue = " hello world "; var trimmedStringValue = stringValue.trim(); alert(stringValue);//" hello world " alert(trimmedStringValue);//"hello world&

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Java中的 String 类有个trim() 可以删除字符串前后的空格字符,jQuery中也有trim()方法可以删除字符变量前后的字符串.但是JavaScript中却没有相应的trim() 方法,幸好,JavaScript中有正则表达式,String 对象有replace() 方法,利用JavaScript的正则和replace方法来达到trim() 方法的效果. 接下来介绍两种方法,其实两种方法大同小异.都是在String 对象的prototype属性上进行trim()方法的定义,并提供实

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var str= ",2,3,4,6,7,"; var str2 = str.Trim(new char[] { ',' }); //去除字符串str两端的','字符. //则str2 为:"2,3,4,6,7" C# Trim方法去除字符串两端的指定字符,布布扣,bubuko.com

浅谈 js 字符串 trim 方法之正则篇

position:static(静态定位) 当position属性定义为static时,可以将元素定义为静态位置,所谓静态位置就是各个元素在HTML文档流中应有的位置 podisition定位问题.所以当没有定义position属性时,并不说明该元素没有自己的位置,它会遵循默认显示为静态位置,在静态定位状态下无法通过坐标值(top,left,right,bottom)来改变它的位置. position:absolute(绝对定位) 当position属性定义为absolute时,元素会脱离文档流

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ie9以前版本,不支持string.trim()方法 所以需要自己实现. <script type="text/javascript"> String.prototype.trim = function () { return this.replace(/(^\s*)|(\s*$)/g, "");}</script>

Js实现类似PHP里trim方法

var trim = function(a,b){     var a = a ? a : " ";     var b = b ? b : "";     if (b == ""){ return "";     }     var la = a.length;     var lb = b.length;     var s = e = false;      if(b.indexOf(a) === 0){      s 

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JS字符串本身并不没有提供常用的trim方法,我们可以通过修改String原形来添加此方法,我们就可以直接调用此方法了: String.prototype.trim = function(){return this.replace(/(^\s*)|(\s*$)/g, '')} String.prototype.leftTrim = function(){return this.replace(/(^\s*)/g, '')} String.prototype.rigthTrim = functio