javascript正则表达式以检查字符和数字以外的其他字符

Question

I need to compare one string with an other string.

Suppose textbox1 contains "this is my requirement" and textbox2 contains "check textbox ".

I need to take first word of each textbox (ie this and check ) and compare them. An exception should be thrown if they are not the same.

The texts might consist of special characters, numbers, anything, but I only need the first words of these texts.

Could anybody tell me a regular expression for this?

Answer 1

/^(\S+)/.exec(str)[1]

that will give you the first word of any string, and then you can compare the two... is that what you want? Or if you want to ignore leading whitespace:

/^\s*(\S+)/

eg:

var rx = /^(\S+)/;

if(rx.exec(textbox1.value)[1] != rx.exec(textbox2.value)[1]){
    // do stuff
}