input输入框中光标高度的变化问题_html/css

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input输入框中光标高度的变化问题_html/css_WEB-ITnose

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Jun 24, 2016 am 11:33 AM

input[type='text']文本框光标高度在有输入内容和为空时发生很大变化。

首先，先看看问题产生的原因：chrome浏览器对光标高度的设置原则为，当没有内容的时候光标的高度=input的line-height的值，当有内容时，光标从input的顶端到文字的底部。

OK，既然知道了原因，我们就相应才去一些措施。尝试了两种方法去做:。

方法1：将line-height的值设置为跟字体大小一致；如果高度达不到，用padding去撑；

方法2：对chrome不设置line-height，它会自动文字居中，对ie进行hack设置line-height的值以保证文字垂直居中；这里要注意一下，如果在reset的样式文件中有设置line-height等值，请进行line-height的重置，可以用line-height:normal。

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