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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